ASUS Motherboard Overclocking
As with many ASUS motherboards, there are a surfeit of overclocking mechanisms. Specifically, you can overclock by manually tweaking settings in the BIOS, by letting the BIOS do it for you with “OC Tuner”, by moving the TPU switch to position 1 or 2, and last by using 4-Way Optimization within AI Suite. Caveat: most of these overclocking adjustments are dependent on “K”-series Haswell CPUs. You won’t be able to overclock much, if at all, with non-”K” series devices.
If you’re the kind of reader that skips to the end of the book to see how things turned out, I’ll give you the manual overclocking results up front: the best I was able to do with a manual overclock was a multiplier of 45x on all cores, at 1.3 volts. This is the same maximum I’ve hit on virtually every Z87-based motherboard I’ve tried and it’s obviously a limit of my particular CPU, at least with air cooling. If you keep up with this sort of thing you’ll know that Ivy Bridge and Haswell silicon simply doesn’t overclock that well.
That said, I was very impressed by how well the various mechanisms ASUS provides actually did. Here are the actual settings made by moving the TPU switch to position 1 and position 2, as well as the more comprehensive changes made by ASUS’ 4-Way Optimization feature in AI Suite:
|Strap||1 Core||2 Cores||3 Cores||4 Cores||RAM|
Interestingly, both the TPU1 and Auto Tuning mechanism set different multipliers depending on the number of cores in use. I’m also very impressed by how well the Auto Tuning feature (invoked as part of 4-Way Optimization) worked. I didn’t include a benchmark run with this setting, but as you can see from the table above, its results would have come in just under those I achieved with manual overclocking.
I have never seen an auto overclocking mechanism come this close to the results I could achieve manually. Kudos to ASUS!