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Reviews - Featured Reviews: Cooling
Written by Olin Coles   
Thursday, 01 January 2009
Table of Contents: Page Index
Best CPU Cooler Performance LGA775 - Q4 2008
Thermally Conductive Element Reference
CoolIT Domino ALC
GlacialTech UFO V51
Thermaltake SpinQ CL-P0466
Thermaltake V1 AX CL-P0508
Titan FENRIR TTC-NK85TZ
Zalman CNPS9900 LED
TIM Application and Surface
Testing Methodology
Test Results: Stock Cooling Fan
Test Results: High-Output Fan
CPU Cooler Final Thoughts
Best of Q4 2008 Conclusion

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
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

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...



 

Comments 

 
# RE: Best CPU Cooler Performance LGA775 - Q4 2008SGT 2010-03-02 11:28
Used this for about 8 months and it started to leak around the pump area work well but in not up to the job in a long hall i replace it with a CORSAIR CWCH50 Hydro Water Cooler...and never look back
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# RE: Best CPU Cooler Performance LGA775 - Q4 2008Michael 2010-07-01 22:55
I used it for 6 month, not so good especially at low speed fan. Once you increase the fan speed it becomes very noisy!
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# Good CPU Cooler BUT MOBO CooksGraham 2010-11-10 06:13
As with most replacement ccolers you have a trade off.With Sttandard cooler you have reduced cooling available for overclocking yet you still have the mobo components cooled by the same fan.With this cooler solution you get amazing cooling if maybee a little noisy when ramped up,I use it on a intel Quad 6600 running at almost 4gig (per core) overclock on a top end Lanpsrty Mobo.The Cpu runs idle at 28-30deg and Sressed when benchmarking at 48-50 so really good.The biggest problem is, even when used in a huge custom case with 2 x 250 mm case fans and three 120 rear fans (One of which adds pull action to the Radiator of the coolit) i have a major problem with the motherboard cooling sometimes hitting in excess of 60 deg which causes all sorts of issues. So to conclued it is a great product If your not doing extreem Overclocking. BUT i Intend to replace it with a Noctua NH-C12P SE14, AM2/AM3/775/1156/1366 which has a 140mm downward facing fan to keep the mobo temps under control.
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