| Best CPU Cooler Performance LGA775 - Q4 2008 |
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Reviews -
Featured Reviews: Cooling
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| Written by Olin Coles |
| Thursday, 01 January 2009 |
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Page 2 of 14
Conductive Elements
Manufacturers have made a small fortune off of confusion tactics and misinformation. Marketing departments often times neglect to refer back to solid science when making their bold claims, which is why we have assembled a complete list of thermally conductive elements in the reference chart below.
It's very well known that Silver, Copper, Gold, and Aluminum together comprise top four most thermally conductive elements. However, without knowing the thermal conductance of these elements you might think the performance was close. As it turns out, Silver and Copper both offer nearly twice the performance of Aluminum when transferring thermal energy such as heat. Aluminum is the least expensive top-tier metal, which explains the popularity. Most Thermal Interface Material and CPU coolers use several different elemental ingredients to work together, but after a careful inspection of the performance levels it comes as a surprise to me that some of the most popular products make use of such poor conductors.
| Thermal Conductance |
Element Name |
Symbol |
| 4.29 W/cmK |
Silver |
Ag |
| 4.01 W/cmK |
Copper |
Cu |
| 3.17 W/cmK |
Gold |
Au |
| 2.37 W/cmK |
Aluminum |
Al |
| 2.01 W/cmK |
Calcium |
Ca |
| 2.01 W/cmK |
Beryllium |
Be |
| 1.74 W/cmK |
Tungsten |
W |
| 1.56 W/cmK |
Magnesium |
Mg |
| 1.5 W/cmK |
Rhodium |
Rh |
| 1.48 W/cmK |
Silicon |
Si |
| 1.47 W/cmK |
Iridium |
Ir |
| 1.41 W/cmK |
Sodium |
Na |
| 1.38 W/cmK |
Molybdenum |
Mo |
| 1.29 W/cmK |
Carbon |
C |
| 1.17 W/cmK |
Ruthenium |
Ru |
| 1.16 W/cmK |
Zinc |
Zn |
| 1.024 W/cmK |
Potassium |
K |
| 1 W/cmK |
Cobalt |
Co |
| 0.968 W/cmK |
Cadmium |
Cd |
| 0.937 W/cmK |
Chromium |
Cr |
| 0.907 W/cmK |
Nickel |
Ni |
| 0.876 W/cmK |
Osmium |
Os |
| 0.847 W/cmK |
Lithium |
Li |
| 0.816 W/cmK |
Indium |
In |
| 0.802 W/cmK |
Iron |
Fe |
| 0.718 W/cmK |
Palladium |
Pd |
| 0.716 W/cmK |
Platinum |
Pt |
| 0.666 W/cmK |
Tin |
Sn |
| 0.599 W/cmK |
Germanium |
Ge |
| 0.582 W/cmK |
Rubidium |
Rb |
| 0.58 W/cmK |
Dubnium |
Db |
| 0.575 W/cmK |
Tantalum |
Ta |
| 0.54 W/cmK |
Thorium |
Th |
| 0.537 W/cmK |
Niobium |
Nb |
| 0.506 W/cmK |
Technetium |
Tc |
| 0.502 W/cmK |
Arsenic |
As |
| 0.479 W/cmK |
Rhenium |
Re |
| 0.47 W/cmK |
Protactinium |
Pa |
| 0.461 W/cmK |
Thallium |
Tl |
| 0.406 W/cmK |
Gallium |
Ga |
| 0.359 W/cmK |
Cesium |
Cs |
| 0.353 W/cmK |
Lead |
Pb |
| 0.353 W/cmK |
Strontium |
Sr |
| 0.349 W/cmK |
Ytterbium |
Yb |
| 0.307 W/cmK |
Vanadium |
V |
| 0.276 W/cmK |
Uranium |
U |
| 0.274 W/cmK |
Boron |
B |
| 0.243 W/cmK |
Antimony |
Sb |
| 0.23 W/cmK |
Hafnium |
Hf |
| 0.23 W/cmK |
Rutherfordium |
Rf |
| 0.227 W/cmK |
Zirconium |
Zr |
| 0.219 W/cmK |
Titanium |
Ti |
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| Thermal Conductance |
Element Name |
Symbol |
| 0.2 W/cmK |
Polonium |
Po |
| 0.186 W/cmK |
Radium |
Ra |
| 0.184 W/cmK |
Barium |
Ba |
| 0.179 W/cmK |
Promethium |
Pm |
| 0.172 W/cmK |
Yttrium |
Y |
| 0.168 W/cmK |
Thulium |
Tm |
| 0.165 W/cmK |
Neodymium |
Nd |
| 0.164 W/cmK |
Lutetium |
Lu |
| 0.162 W/cmK |
Holmium |
Ho |
| 0.158 W/cmK |
Scandium |
Sc |
| 0.15 W/cmK |
Francium |
Fr |
| 0.143 W/cmK |
Erbium |
Er |
| 0.139 W/cmK |
Europium |
Eu |
| 0.135 W/cmK |
Lanthanum |
La |
| 0.133 W/cmK |
Samarium |
Sm |
| 0.125 W/cmK |
Praseodymium |
Pr |
| 0.12 W/cmK |
Actinium |
Ac |
| 0.114 W/cmK |
Cerium |
Ce |
| 0.111 W/cmK |
Terbium |
Tb |
| 0.107 W/cmK |
Dysprosium |
Dy |
| 0.106 W/cmK |
Gadolinium |
Gd |
| 0.1 W/cmK |
Lawrencium |
Lr |
| 0.1 W/cmK |
Einsteinium |
Es |
| 0.1 W/cmK |
Berkelium |
Bk |
| 0.1 W/cmK |
Californium |
Cf |
| 0.1 W/cmK |
Fermium |
Fm |
| 0.1 W/cmK |
Curium |
Cm |
| 0.1 W/cmK |
Nobelium |
No |
| 0.1 W/cmK |
Americium |
Am |
| 0.1 W/cmK |
Mendelevium |
Md |
| 0.0834 W/cmK |
Mercury |
Hg |
| 0.0787 W/cmK |
Bismuth |
Bi |
| 0.0782 W/cmK |
Manganese |
Mn |
| 0.0674 W/cmK |
Plutonium |
Pu |
| 0.063 W/cmK |
Neptunium |
Np |
| 0.0235 W/cmK |
Tellurium |
Te |
| 0.0204 W/cmK |
Selenium |
Se |
| 0.017 W/cmK |
Astatine |
At |
| 0.00449 W/cmK |
Iodine |
I |
| 0.00269 W/cmK |
Sulfur |
S |
| 0.00235 W/cmK |
Phosphorus |
P |
| 0.001815 W/cmK |
Hydrogen |
H |
| 0.00152 W/cmK |
Helium |
He |
| 0.00122 W/cmK |
Bromine |
Br |
| 0.000493 W/cmK |
Neon |
Ne |
| 0.000279 W/cmK |
Fluorine |
F |
| 0.0002674 W/cmK |
Oxygen |
O |
| 0.0002598 W/cmK |
Nitrogen |
N |
| 0.0001772 W/cmK |
Argon |
Ar |
| 0.0000949 W/cmK |
Krypton |
Kr |
| 0.000089 W/cmK |
Chlorine |
Cl |
| 0.0000569 W/cmK |
Xenon |
Xe |
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Recipes usually call for only the finest ingredients, and the very same principle is true for overclocker and hardware enthusiast products. Thermal pastes are often times mixed from at least a dozen different components, while heatsink coolers may use only one or two different metals. Armed with the knowledge above, you might expect any silver-based product to be a clear-cut winner... but building a superior product by design is different than what you receive in execution.
Keep these materials in mind as we take a look at the new products Benchmark Reviews has collected for this round-up article, beginning with our first contender...
Purchase the World's Best CPU Coolers at FrozenCPU
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