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Cooler Master Hyper 6 KHCV81U1 Copper K8/P4 Heatsink
Cooler Master Hyper 6 KHCV81U1 Copper K8/P4 Heatsink
Abstract: Fresh from the chrome plated Jet4 wonder, Cooler master are back with the brand new 6-heatpipe packing Hyper6 KHC-V81-U1 Intel Pentium4 and AMD Athlon64 heatsink!

 Manufacturer  Category  Published  Author 
CoolerMaster   Cooling / Heatsinks   Apr 20, 2004   Max Page  

Home > Reviews > Page: Final Heatsink Temperature Comparisons

( Socket 478 - Pentium4 ) Rise Above Ambient Temp. (c)
Mfg. Model 27mm large copper block 27mm large copper block



Thermalright (high) SLK-900U 11.6 20.5
Cooljag (high) CJC66IC-A 10.4 21.3
Gigabyte (high) PCU31-VH 12.5 22.3
Coolermaster (high) Hyper6 KHCV81U1 12.4 23.4
Zalman CNPS7000A-Cu 12.4 24.9
Thermal Integration TI-RV104N 14.4 25.4
Alpha PAL8942 14.7 26.1
Gigabyte (high) 3DCooler-pro 15.6 26.6
Coolermaster (low) Hyper6 KHCV81U1 14.4 27.1
Zalman CNPS7000-Cu 14.1 27.7
AVC 117140 15.2 27.8
JMC 401100 15.6 27.9
Coolermaster (high) Jet4 12.6 28.1
Coolermaster IHC-H71 14.0 28.1
Taisol CEP447181 14.6 28.7
Jetart JAP416A 11.8 29.1
Thermal Integration TI-A8736N 12.4 29.1
Arkua 8568 15.4 29.3
Intel Stock 3.06GHz 15.0 30.1
Jetart JAP407A 13.8 30.2
Taisol CCP445172 17.5 30.7
Thermal Integration TI-RV108N 15.9 31.7
Spire SP411C5 17.3 31.7
Arkua Q85X-7J 16.7 31.9
Dynatron DC1207BMX 17.2 32.4
Thermal Integration (high) TI-V7035TN 18.1 32.7
Cooljag JVC661A 17.3 33.5
TS Heatronics (6" fan dist) NCU-1000 15.6 33.6
Dynatron DC1206BMY 18.6 33.6
Scythe Kamakaze 18.9 34.1
Zalman CNPS6500-AlCu 17.2 34.3
Taisol CEP426151A 19.4 35.4
Spire SP420B8 17.4 36.2
Arkua 8456X-8T 18.6 36.3
Arkua 838T-7G 18.7 36.7
Intel Socket 478 19.4 37.4
Dynatron DC1207BMW 19.5 37.9
Zalman CNPS5700D-Cu 18.9 38.3
Titan CW9TB/SC 18.9 38.3
Evercool NW9F715CA 19.1 38.5
Aopen ACP4LC 17.9 38.8
Globalwin VA476 20.8 39.3
Dynatron DC1206BM-S 20.8 39.6
AVC 117160 20.3 39.8
Evercool CUW8-715 21.8 40.8
Arctic Cooling SuperSilent4 Pro 21.7 43.0
Dynatron DC1206BMV 22.0 45.1
Vantec GSN-7105 25.1 46.6
Arkua 848X-6B 27.3 53.2
Verax P16 27.4 54.0
Dynatron DC1U-B02 32.9 67.4



Wow! The Coolermaster Hyper6 KHCV81U1 certainly makes a powerful high performance Pentium 4 cooling option when the fan speed is kicked all the way up to 3000RPM. Now while it doesn't quite rank in at the top spot, it is worthwhile mentioning that in the review of the Thermalright SLK900U we used the biggest baddest fan around - a 67.2 dB A loud Delta screamer! Whereas the Coolermaster Hyper6 ranks in 3-4 degrees Celsius warmer, it manages those temperatures at a more 'humane' 54 dB A noise level.

The other two heatsinks at the top of this reference list, the CoolJag CJC66IC (59.a dB A) and Gigabyte PCU31-VH (63.7 dB A) each were substantially louder, though the CoolJag heatsink was more in line with what we find here. When the fan speed on the Coolermaster Hyper6 is dialed down to ~1900RPM, it comes down a little in this temperature reference list - to the level of a high end heatsink - but with much better noise output.

Update: A lot of readers have written in to ask us to test the Coolermaster Hyper6 with the same jumbo Delta screamer which was used on the fanless Thermalright SLK-900U heatsink. FrostyTech typically only tests with the stock fan that ships with a heatsink, but to stem the flow of requests we went ahead and strapped on a 80x80x38mm Vantec Tornado fan. The thermal improvement was about 6-7 degrees, or more specifically, the rise above ambient temperature on the 100W test was just 17.9 degrees Celsius. This would place the Hyper6 at the top of this reference list, with a lead of 3 degrees over the SLK-900U. The down side is that the Vantec Tornado is about as loud as the real thing. :-(

At this time the FrostyTech 'System Mk.2' Athlon64 test bed is not quite ready, so we'll have to revisit the Coolermaster Hyper6 in the future, and see how it handles the heat when faced with the larger contact surface area of AMD's 64-bit processors. Stay tuned to FrostyTech for a special notice when we launch the improved K8 heatsink test platform!

Getting back to the Coolermaster Hyper6, while I'm sure you all agree the thermal performance of this large heatsink is exceptionally great, the acoustics could stand to be improved a few decibels. For starters, at the top of the heatsink where the 6 heatpipes come through the aluminum shroud, I'd highly recommend adding some epoxy to stop the rattling, and vibrations in the aluminum component. Ideally, a couple of rubber gaskets would work wonders for A) absorbing any fan vibrations, and B) preventing metal-to-metal contact noise. I'm almost tempted to drill out the swag joints that hold the Hyper6 fan shroud in place and add some rubber washers around each of the heatpipe tips at the top... but perhaps Coolermaster will take this small criticism to task and initiate a quick revision themselves?

The retail price for the Coolermaster Hyper 6 heatsink is currently not known, but I'd expect it to be pretty competitive given Coolermaster's history. In any event, the bottom line remains that the Coolermaster Hyper6 KHCV81U1 is one heck of a Pentium/Athlon64 heatsink. While it easily ranks alongside the cream of the performance heatsink crowd, it is a bit quieter than the top heatsinks listed in our comparison chart. A massive hunk of copper with six heatpipes basically says it all, and with thermal performance to match, what more could you ask for?!

Related Articles:

Here are a few other articles that you might enjoy as well...

1. Thermaltake Silent Boost A1889-01 Copper Heatsink
2. Gigabyte 3DCooler-Ultra PCU31-VH P4/K7/K8 Heatsink Review
3. Coolermaster Jet 4 ICB-V83 Pentium 4 Heatsink
4. Scythe Kamakaze AthlonXP / Pentium 4 Heatsink Review
5. Thermal Integration TI-RV108N Pentium 4 Heatsink
6. Cooljag CJC66IC-A Copper Pentium 4 Heatsink Review
7. Thermal Integration TI-A8641L Heatsink Review

 Previous Page ° Heat Sink Review Index  

Table of Contents:

 1:  Cooler Master Hyper 6 KHCV81U1 Copper K8/P4 Heatsink
 2:  Examining the Heatsink
 3:  Heatsink Thermal/Acoustic Test Parameters
 4:  Surface Roughness Comparison
 5:  Initial Temperature Test Results
 6: — Final Heatsink Temperature Comparisons

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