|
Page 6 of 18
VGA Testing Methodology
The Microsoft DirectX-11 graphics API is native to the Microsoft Windows 7 Operating System, and will be the primary O/S for our test platform. DX11 is also available as a Microsoft Update for the Windows Vista O/S, so our test results apply to both versions of the Operating System. All of the tests in this review were run with DX11 graphics.
According to the Steam hardware survey, as of December 2011 the most popular desktop resolution (for Steam users) is 1680x1050 pixels, with a 17.59% share, with 1920x1080 pixels coming in second with only 7.7%. However, when testing video cards at this level, the higher the resolution you can test with, the better. I ran most tests at both 1680x1050 and 1920x1200 (I continue to prefer the 16:10 ration of 1920x1200 to the mysteriously more popular 1920x1080 resolution). Frankly the top-end video cards these days are so powerful that even 1920x1200 isn't much of a challenge...
A combination of synthetic and video game benchmark tests have been used in this article to illustrate relative performance among graphics solutions. Our benchmark frame rate results are not intended to represent real-world graphics performance, as this experience would change based on supporting hardware and the perception of individuals playing the video game.
DX11 Cost to Performance Ratio
For this article Benchmark Reviews has included cost per FPS for graphics performance results. Only the least expensive product price is calculated, and does not consider tax, freight, promotional offers, or rebates into the cost. All prices reflect product series components, and do not represent any specific manufacturer, model, or brand. These retail prices for each product were obtained from NewEgg.com on 8-January-2012:
- $210.00 GeForce GTX 560Ti
- $330.00 GeForce GTX 570
- $480.00 GeForce GTX 580
- $749.00 GeForce GTX 590
- $320.00 Radeon HD 6970
- $700.00 Radeon HD 6990
- $600.00 Radeon HD 7970 (MSRP of XFX R7970 Black Edition Double Dissipation)
Intel X79-Express Test System
DirectX-11 Benchmark Applications
- Aliens vs Predator
- Extreme Settings: (Very High Quality, 4x AA, 16x AF, SSAO, Tessellation, Advanced Shadows)
- 3DMark11
- "Extreme" settings (resolution set to 1920x1200 from standard 1920x1080)
- Lost Planet 2
- 32x AA, High Shadow Detail, High Texture, High Render, High DirectX 11 Features)
- Batman: Arkham City
- FXAA (high), DX11 features on, High Tessellation, Extreme Detail, Dynamic Shadows, Motion Blur, Distortion, Lens Flares, Light Shafts, Reflections, Ambient Occlusion, Normal PhysX
- Metro 2033
- Extreme Settings: (Very-High Quality, AAA, 16x AF, Advanced DOF, Tessellation, 180s Fraps Chase Scene)
- Unigine Heaven Benchmark 2.5
- Extreme Settings: (High Quality, Normal Tessellation, 16x AF, 4x AA)
- Crysis 2
- Extreme Quality, 4xAA, DirectX 11 features, Edge AA, High Resolution Textures
Video Card Test Products
| Graphics Card |
GeForce GTX560Ti |
GeForce GTX570 |
GeForce GTX580 |
GeForce GTX590 |
Radeon HD6970 |
Radeon HD6990 |
Radeon HD 7970 |
| GPU Cores |
384 |
480 |
512 |
1024 |
1536 |
3072 |
2048 |
| Core Clock (MHz) |
822 |
732 |
772 |
607 |
880 |
800 |
1000 |
| Shader Clock (MHz) |
1645 |
1464 |
1544 |
1215 |
N/A |
N/A |
N/A |
| Memory Clock (MHz) |
1050 |
1900 |
2004 |
1707 |
900 |
1250 |
1425 |
| Memory Amount |
1024 MB GDDR5 |
1280 MB GDDR5 |
1536MB GDDR5 |
3072MB GDDR5 |
2048MB GDDR5 |
4096MB GDDR5 |
3072MB GDDR5 |
| Memory Interface |
256-bit |
320-bit |
384-bit |
384-bit |
256-bit |
256-bit |
384-bit |
- NVIDIA GeForce GTX 560Ti (822 MHz GPU/1645 MHz Shader/1050 MHz vRAM - Forceware 285.62)
- NVIDIA GeForce GTX 570 Reference Design (732 MHz GPU/1464MHz Shader/1900 MHz vRAM - Forceware 285.62)
- NVIDIA GeForce GTX 580 Reference Design (772MHz GPU/1544MHz Shader/2004 MHz vRAM - Forceware 285.62)
- NVIDIA GeForce GTX 590 Reference Design (607 MHz GPU/1215 MHz Shader/1707 MHz vRAM - Forceware 285.62)
- ATI Radeon HD 6970 Reference Design (880 MHz GPU/900 MHz vRAM - ATI Catalyst Driver 11.12)
- ATI Radeon HD 6990 Reference Design (800 MHz GPU/1250MHz vRAM - ATI Catalyst Driver 11.12)
- XFX R7970 Black Edition Double Dissipation (1000 MHz GPU/1215 MHz Shader/1425 MHz vRAM - ATI Driver 8.921-111202a-129903E-ATI)
|
Comments
The 570 is like 30% faster than the 6950 - the 6950 is not similar "or better".
##techpowerup.com/reviews/AMD/HD_6950_1_GB/22.html
--- it can't PhysX - it has AA annd driver issues, it can't DX11 as well
--- it is not EQUAL it is INFERIOR
the 6950 is a nice card if it doesn't crash and plenty respectable for gaming, but it's NOT GTX570.
----
On the other side of wrong, I've been really surprised by the lackluster reaction of amd fans to these two new SI cards. I mean they really do have some awesome performance, but it appears everyone is down on the price more than ever...
If AMD fans don't start paying for their gaming cards instead of constantly whining about price and pinching every 5 dollars there probably won't be any radeon cards in anyone's future soon enough.
--
Further it appears there might be trouble in speedsville - as I've noticed an awful lot of early adopters (wanted/trade/ are of sites) wanting to ditch their 7000 series card for Nvidia 580's... I suspect the drivers just are not doing it for them...
---
Of course, this only would have applied up until about 2-3 months ago. The stock of 6950's has quickly dwindled as retailers are getting ready to stock the replacement; the 7850.
As for you claim of "driver issues", this is simply stale old FUD. Since AMD took over, 'driver issues' are basically equivalent to Nvidia.
As for PhysX, very few games use it anyway, but if you want it simply spend a few bucks on an old 8800GT or a new low-end card. I'd use a separate card for it anyway, even with a 570, as the PhysX in games like Mafia 2 can be very taxing on the card anyway.
You assertion about DX11 is just flat out wrong. AMD cards have had it since the 5XXX series. Which is ironic, because AMD actually had a DX11 card out 6 months before Nvidia did!
As for the claim that an awful lot of early adopters are wanting to ditch their 7000 series cards, I'm just straight up going to call bull# on that. I'm a member of multiple gaming/overclocking forums, and everyone seems to just absolutely love their 7XXX series chips. They're selling so well retailers are having a hard time keeping them in stock!
--
There ya go hows the feel ?
---
PS - You don't have to be a member of any forums to see what posters are saying - anyone can surf and read - so you shot yourself in the head there for being so stupid.
Also, DX11 performance of radeon is under par - that's why all the amd fans whine Crysis 2 is over tesselated to give Nvidia cards a huge advantage...
--
I mean dude, you denying common knowledge is just about as ridiculous as it gets, but let's face it, that's what amd fans do - and they "make mistakes" like the guy I r4eplied to who had the prices oh so wrong, much in favor of amd, lower than available, OF COURSE.
--
Stop the lying and support or defend fairly. That's all I ask.
47% of 5770 card owners report ongoing unsolved driver issues.
The number is only slightly better for the 6000 series.
Seriously? Come on now, you and I both know that the 7970 is miles ahead of the GTX580 performance wise. Hell, it's even beat by the 7950. What you're doing is no better than what you claim the others here are doing.
Keep in mind that first post you quoted wasn't even mine.
"PS - You don't have to be a member of any forums to see what posters are saying - anyone can surf and read - so you shot yourself in the head there for being so stupid."
PS I never said such a thing. And you've got the gall to call *me* stupid!
"Also, DX11 performance of radeon is under par - that's why all the amd fans whine Crysis 2 is over tesselated to give Nvidia cards a huge advantage"
Equivocating 'DX11 performance' with 'tessellation performance' is again, just dishonest. It's common knowledge that the Evergreen and Northern Islands architectures can't do tesselation as efficiently as Fermi.
"but let's face it, that's what amd fans do"
Seems to me that you, the Nvidia fan, are the only one denying and obfuscating common knowledge here. And by the way, I'm not a fan one way or the other. I buy what gives me the best performance for the price I'm looking for. Sometimes it's Nvidia, sometimes it's AMD.
"and they "make mistakes" like the guy I r4eplied to who had the prices oh so wrong, much in favor of amd, lower than available, OF COURSE."
The prices he quoted were, at the time, completely true. With the 6950 and 6970 being replaced by the 7850/7870, production on the 6950 especially slowed almost to a stop. Product shortages means higher prices. Thus, going back 3-4 months you can see 1GB 6950's hovering around $220, and the 2GB models around $250. Heck, I picked up my 2GB model for $229. Look at Newegg now. Only 2 XFX 6950s listed, and not a single one in stock.
"Stop the lying and support or defend fairly. That's all I ask."
I'm kind of curious why you think it's ok for you to ask this but not follow it yourself?
"47% of 5770 card owners report ongoing unsolved driver issues."
Based on what? Where did that number come from?
Whatever didn't want to waste my time anyway with Steve - another one in my book.
So they do it, I respond in like kind, and I'm the troll.
OK.
Got it.
Fine i'll shut it.
" Just sold my 7970's for $350 less than i bought them for.
They both were monsters 1250/1750mhz 24/7 @ 1225mv.
Sensational hardware, extremely impressive cards but in all honesty, their driver support is horrid and spoils the awesomeness.
Just settled for a gtx 260 sli for $100 for now."
reply : " ... I would really like AMD to devote more resources towards their driver development. "
##overclock.net/t/1196856/official-amd-radeon-hd-7950-7970-owners-club
I did NOT LIE - it's all over the place..... almost everyone is having problems.
" I want to love my 7970 . but the driver issues are killing me. 12.2 whql , random crashes in windows, cant survive a 3dmark loop. 12.3 beta feb 28th , windows dont crash , however bad graphical errors in bf3 and swtor which is the only games i play. I used ATIMAN in between each driver install so i know its not that. The card isnt stable at benchmark loads for more than 15 mins or so. I may have a bad card , but i still have the option to return it for refund."
next: " I've started playing multiplayer BF3 B2K lately, and even at 1100/1500 I am struggling to keep 60fps in intense situations with lots of smoke. I have everything maxed and not using MSAA at all. At stock 925 core I am getting slightly worse performance than the OC 570 (920 core) I had at same settings. I have tried 11.12 WHQL, 12.2/3 WHQL and now using .8960 driverset from Feb 28, all net roughly the same performance.
Is this happening to everyone or just me? "
--
The 570 beats it... LOL
Like I said, I've noticed what's going on.
Nvidia launches are WORLD'S ABOVE the mess amd's are. That goes onward over the life of the cards.
I can't speak for the people who bought the cards, but on the forums I hang out on people have not been whining that I've seen. Personally, I have to wonder why anyone would purchase 7970 cards to run BF3 when a pair of 6950 or 6970 cards will max out that game. I wouldn't purchase them unless I was making a new build from scratch, and then I would still look for the best bang for the buck.
Personally, I have a pair of 6970 cards and they're doing an awesome job. Couldn't be happier. I'm going to skip this next generation anyway since I highly doubt there will be any games that will slow my cards down enough to worry about for at least a year or two.
I bought a 6950 because it was simple to make it into a 6970, and with 2 x 6950 in crossfire you get slightly better performance than 2 x 570. (Unfortunately, at the time, I could only find one reference 6950, so I ended up with a 6950 flashed to a 6970 and a 6970 in crossfire).
tomshardware.com/reviews/crossfire-sli-3-way-scaling,2865.html
And that article is not even 2 x 6970 which would preform slightly better.
A agree that fanboys can be pretty lax with their "facts", but I see it on both sides of the issue. Over the last 20 years I have owned both AMD and Nvidia cards, and both performed as well as I needed them to. This entire discussion is pointless, it's like arguing over a high end Lamborghini vs a Porsche.
If they're really so bad shouldn't they like sue the company for a defective product? Like they did to nvidia after they shipped out millions of defective laptop video cards.
--
" now it's just about equal." The 570 scales like a monster it's NEVER just about equal... and it's NEVER $220.
"I own one.... Only 2 XFX 6950s listed " AT $255 MINIMUM YOU FAILED TO MENTION - SO MYSTERIOUSLY.
--------
As our reviewers in the know have told us straight from the mouth of the devil - AMD purposefully dried up 6000 series so they would not compete against themselves.... "production on the 6950 especially slowed almost to a stop." - THANKS AMD FOR BEING AN EVIL COMPANY SCALPING END USERS - I'M SURE YOU AGREE SINCE YOU CLAIM TO BE NON BIASED ! THANKS FOR AGREEING !
---
THE GTX570 WAS $200 PLUS 7 SHIP ON NEWEGG LAST WEEK.
---
" As for you claim of "driver issues" - YOU'RE A LIAR
" You assertion about DX11 is .."
Jeezus cripes, you're that silly ?
AMD SUCKS WITH DX11, including your 6950 - a 460 SMOKES IT.
---
" Which is ironic, because AMD actually had a DX11 card out 6 months before Nvidia did!"
Ironic is AMD whining nvidia has no dx11 card for 6 months like you just did, then GETTING SMOKED in every Dx11 bench there is and STILL INCAPABLE on many DX11 tests with the 79xx series though finally improved by COPYING NVIDIA ARCHITECTURE.
--
Ironic is 6 months of bragging, then 2 years of FAILURE in every dx11 competition. That's ironic. Now DX11 is "overused" according to you amd fans... and nvidia is CHEATING TURNING IT UP...
LMAO - THAT'S PURE IRONY 10/10 100%
---
" Seriously?" < you copied my words I'll exaggerate too then you ask me if I was serious - you auto copied them over in the reply title - so when you whine I called you stupid know why... I still say so... you are, sorry, stupid.
" "47% of 5770 card owners report ongoing unsolved driver issues.""
you claimed you're a forum member yet you haven't seen it....WHATEVER.NOT THAT MANY LARGE FORUMS DUDE.
--
You're another amd fan period. You got a 6950 so took it personal - you may be the same guy under another name who cares... YOU'RE AMD INVESTED.
---
GTX570 is FASTER OVERALL ABOVE AND AWAY FROM 6950 THAN 7970 IS FROM 580.
HAHAHHAHAHHAHAHHAAAA AAAAAAAAAAAA !!
---
I told the truth - PERIOD
Perhaps you need to scroll down a little more, or look a little closer? Here, I took a screenshot of the relevant graph to help you out. imgur.com/gb37R You'll clearly see my card, the 6950 2GB, at 101%, and the GTX 570 at 119%. Now, my basic arithmetic skills are a bit rusty, but it seems to me that the difference is, in fact, 18%. Actually, since my card is unlocked and overclocked, the difference is about 6%.
"" now it's just about equal." The 570 scales like a monster it's NEVER just about equal... and it's NEVER $220.
"I own one.... Only 2 XFX 6950s listed " AT $255 MINIMUM YOU FAILED TO MENTION - SO MYSTERIOUSLY."
Scales like a monster? Funny how the 6970 beats it by 1% at 2560x1600. I play at 5700X1080 though, so that moving ahead at very high resolutions is extremely relevant.
>THANKS AMD FOR BEING AN EVIL COMPANY SCALPING END USERS - I'M SURE YOU AGREE SINCE YOU CLAIM TO BE NON BIASED ! THANKS FOR AGREEING !
Huh, speaking of 'spinning things'... You of course know it's the OEMs who make the actual boards end users buy, right? So AMD has no control over whether they decide to ramp down production to start production on the new boards.
"THE GTX570 WAS $200 PLUS 7 SHIP ON NEWEGG LAST WEEK."
Yes, a limited number of refurbished EVGA GTX 570 units were available on Newegg last week. That's very different from what you said. The keys here are 'refurbished' and 'limited'.
"YOU'RE A LIAR"
You asserting it just makes me look like the bigger man and you like a fool.
"AMD SUCKS WITH DX11, including your 6950 - a 460 SMOKES IT."
On what games at what settings and resolutions? Where's the data to back this up? Because from what I can see you're looking like a fool again: ##anandtech.com/bench/Product/313?vs=293
How is pointing out the irony in you claiming AMD has "no DX11 cards" whining?
"then GETTING SMOKED in every Dx11 bench there is and STILL INCAPABLE on many DX11 tests"
Ooh boy, look out, all those games with crazy tessellation are going to kill my card! Thank goodness that by the time big tessellation games are out I'll have a new card!
" the 79xx series though finally improved by COPYING NVIDIA ARCHITECTURE."
Ah, so which parts of Fermi does Southern Islands copy?
"Now DX11 is "overused" according to you amd fans"
You keep calling me an AMD fan for some reason. I'm not an AMD fan, I'm a value for money fan. When I built my roommate's PC before the Fermi refresh, I picked a GTX 460 because it was the best performing chip for his budget. Isn't that how you build your computers? Or are you one of those people who's so caught up in vapid brand loyalty e-peen contests to look at it objectively?
>you claimed you're a forum member yet you haven't seen it....WHATEVER.NOT THAT MANY LARGE FORUMS DUDE.
You made the (oddly specific) claim that I knew you couldn't back up with any evidence, so I called you out on it. There are two right choices here. You can either fine the evidence to back up your claimed statistic, or you can apologize for making a baseless claim.
"You're another amd fan period."
When the time comes to upgrade my card, I will weigh my options carefully, and pick something that gives me the best performance for my dollar. Last time I wanted the best performing card for about $250. My options were the 560 Ti and the 6950. I found the 6950 2GB on sale for $230, so I bought it, knowing it would outperform the 560 Ti stock in most of the games I play. I knew that I needed the 2GB frame buffer to handle modern high resolution textures on my eyefinity setup. I also knew that with an AMD card I could run all three monitors from a single card, something a 560 Ti wouldn't be able to do. Thus, it was the best option for me at that price point. If I had more money maybe I would have gone for SLI 560 Ti. Who knows. But I got the best card for my situation.
Unless you're me, playing on an eyefinity system where the low frame buffer on the GTX570 brings it down to the level of my unlocked and overclocked 6950.
>HAHAHHAHAHHAHAHHAAAA AAAAAAAAAAAA !!
...Are you twelve?
The difference between 18% and 22% is negligible, and can be accounted for by which performance you take to represent 100%.
I usually hate to use labels on people, I really find stereotyping to be rather vulgar, but the label "troll" honestly seems to fit you perfectly.
All your messages are full of accusations and labels such as "stupid" and "liar". I have to wonder if you're a 16 year old who thinks he knows everything (not that I think all 16 year olds are like that, but people with attitudes like yours seem to be about that age).
If you can't have a simple discussion without calling people liars and stupid, than why bother at all?
What do you think is going to happen here? You think the people reading these comments are going to say to themselves "Boy, that guy who got is facts wrong is a (place name here), or do you think they're going to look at the immaturity of the person calling everyone names and say "Wow, that kid really is a (place name here).
Personally I'm surprised it's gone on as long as it has. I would have thought the site would draw a line at name calling. I know I would. If you really want to call people names, why not head to a political discussion site?
Also, learn some math. From the link you supplied the 570 is 18% faster, not 30%. Personally, I would say 18% is similar.
By the way, I don't know where else you get your ideas, but the 6950 in my system is running a 6970 flash and has not "crashed" once. I also have a 6970 in crossfire with it, and it performs exactly the same as the 6970. The unlockable 6950 cards are one of the best values available in a video card.
Why r u comparing a 1.5gb 580 to a 3gb 7970?
for one thing the cost would be almost equal, not to mention the performance comparison would be more intuitive.
Thanx
Cause u have to compare flagship with flagship.
Good review.
#benchmarkreviews.com/index.php?option=com_content&task=view&id=801&Itemid=72
However, (A) another tester has it, not me, and (B) none of these tests would have benefited from the extra memory anyway-- you need a multi-monitor system to make effective use of that much memory.
Fyi from a gtx 580 classified owner @ 900mhz I can tell you the difference from 1.5g to 3gig is minimal for the difference they charge!
Why do ppl still troll the same convo every time something new comes out.
The article even makes a reference to the "limited overclockability" of the reference 580 while apparently ignoring the existence of the 580 Classified, I understand that reviews can't have access to unlimited versions of cards but that card was reviewed here.
Finally I might have missed the explanation but in the $ per fps statements when it refers to the 7970 and the 7970 overclocked which two of the three "cards" are we talking about ?
-The R7970 Reference
-The factory overclocked R7970 from XFX
-The factory overclocked R7970 from XFX further OC'd by sliding all the bars to the right
Since we only had the one XFX 7970 to test, all 7970 results, stock and overclocked, were from this card.
I saw a picture of a GTX-780 performance slide by NVIDIA not long ago and it promises to be much faster than this card is. I believe that this card is fast enough for me, but it's too new and way too expensive at this point. (unrealistically so)
NVIDIA's new card will tame the prices on these, once it's the new Shark in the pond.
Yeah, yeah...talk is cheap. Current rumors have Keppler coming out in late spring/early summer, but recall the delays associated with Fermi.
If you're going to be running two high end cards, will you be using a multi-monitor setup? I'm considering setting one up if only to be able to test these insanely powerful video cards available now.
I have two of them so that when my Sons and Grandsons are here, we can play the same games together. We have a lot of fun together.
Each one has a GTX-570 in it now, so I can wait as long as it takes for prices to settle and for plenty of reviews to surface.
That will probably give you the best value overall, and allow you to keep those 570s useful!
One thing that sort of bothers be about expensive products like this is all the marginal tech they install. For example, the ability to support 4K displays. ATM it's pretty hard to find a monitor at a reasonable price that supports anything over 1080p or 1920 x 1200. I wonder how much of that overly high price for the card is caused by built in tech that will never be used? I have wondered this same thing over the years about various products, including high end video cards. It's almost like a little kid at the ice cream store "biting off more than he can chew". They always build in effects that can bring their new cards to their knees, and add features most people don't need. If we thought this card was taxed by these tests, can we imagine the huge failure trying to run these tests at 4K? What would be the point? Of course, this is a flagship product I guess and they will release budget versions. I just wish the budget versions would cut the excess and not the performance.
Still, it's a good card and a well done review.
I did notice one thing though. In a couple of those pictures, I couldn't help but notice someone got a fingerprint on the card. I know no one likes to use a sweet video card like that when it's been all messed up with greasy fingerprints.
So, I thought I would offer my services to....dispose of...the greasy culprit. Just say the word and I'll email you my address. You can send me the card and I will dispose of it. I'll start by heating it up...real good....
For now, I'd recommend waiting until more non-reference designs, particularly the Asus Direct CU II version and the MSI Twin Froznr III versions come out.
##hardware.fr/focus/59/xfx-radeon-hd-7970-overclocking.html
That chip runs hot.
I agree Furmark is a very brutal test. One thing I love about my GPU right now is that it stays relatively cool even under Furmark.
I have built a lotta boxes with the factory OC'd 560 Ti's and the number of phases in the VRM design seems to have a direct correlation on how high ya can OC the buggers. I also thought in interesting to read the the 7850 reviews that not a single manufacturer will be selling a "reference" design. My guess is that the series OC ability is significantly impacted by the reference VRM and everybody sees the availability of the extra OC ability as far more advantageous than the saving the extra expense of beefing up the vRM.
I don't see the 79xx as something I'd be interested in .... similar to the way I wouldn't consider a 580 (616 fps) for $500 when I can get two of those 560's above for $410 and get 40% more fps.
The 78xx pricing and performance has my interest piqued .... but then again, we haven't seen nVidia's entry in this category. I don't see myself buying top end cards when two mid range cards offer better performance at less money.
Now, if you were to crossfire/sli these cards the story could be different as the 69xx series really scale well and you can expect a 77% performance increase in some games and tests using 4x AA. I have not tested sli but an article I read on Tom's did a scalability test between nVidia and Radeon cards and showed this difference when using two cards. In this case, the 18% difference is pretty much eliminated. Of course, the number of people who use multiple video cards is fairly slim (I use two myself), but I admit if we're talking stock cards with no overclocking the 570 does come out approximately 20% better.
You gave the clocks of the 560 Ti's, but not the 6950's or 6970's?
It's common knowledge the newer AMD cards scale better in crossfire than Nvidia cards do in SLI.
I don't trust your number at all. Why? Because they simply contradict any other comparison I've ever seen.
And funnily enough a simple Google allows me to see that you've pulled out this exact same line more than once.
Where's the source on these numbers?
Because the numbers I'm looking at here: ##tomshardware.com/charts/2011-gaming-graphics-charts/Enthusiast-Index,2674.html say they yours are obviously biased towards Nvidia (imagine that, an Nvidia defender having biased numbers!)
What's that? In relative performance using enthusiast settings (1920x1080, high anti-aliasing) crossfire'd 6950 2GBs have a relative performance score of 201.58, while the crossfire'd 560 Ti's have a relative performance score of 177.21? Who would have thought the slower card would score worse! It looks even more grim against those who've got their 6950's unlocked and overclocked, or 6970s, which score 215.81.
But hey, let's go over to the 'gamer' index; perhaps the 560 Ti will fare better with lower resolutions and less AA (1680x1050, less or no AA)! ##tomshardware.com/charts/2011-gaming-graphics-charts/Gamer-Index,2673.html
Alas, no such luck. In fact, it looks like the gap got bigger! The 6950 2GB crossfire now sits at 244.53, while the 560 Ti SLI sits at 213.55.
Funny how that works, eh?
tomshardware.com/reviews/crossfire-sli-3-way-scaling,2865.html
Tried these setting as per the OC.
Get about 30sec of gameplay before windows says "display driver stopped responding and has been restored"
Would be awesome if someone could help me out.