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Cooler Master Hyper 48 KHC-L91 Heatsink Review
Cooler Master Hyper 48 KHC-L91 Heatsink Review
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Abstract: The Cooler Master KHC-L91 Hyper48 comes with a collection of brackets and mounting plates which enable its use on socket 478/775 Intel Pentium 4 and socket 754/939/940 AMD Athlon64 processors.

 Manufacturer  Category  Published  Author 
CoolerMaster   Cooling / Heatsinks   Feb 26, 2006   Max Page  

Home > Reviews > Page: Final Heatsink Temperature Comparisons

FrostyTech.com Mk.II Synthetic Thermal Heatsink Test Results
Results based on readings from a 38x38mm copper interface die with 125W heat load on the Mk.II Test Platform. Thermal Test values for each heatsink were calculated by determining the rise over ambient temperature at time of test. Information on Frostytech's test methodology is available here.
Socket 939/940/754 compatible CPU heatsinks
manufacturer: model no.: *fan speed: 125w thermal test (°c) noise level (dba)

Gigabyte G-Power Pro high 18.6 71.9
Coolermaster Hyper6 high 20.5 54.7
Thermaltake Venus 12 high 21.7 68.1
ASUS Starice high 22.8 67.4
Arctic Cooling Freezer 64 Pro 23.2 50.9
Coolermaster Aquagate Mini high 23.2 59.2
Thermaltake Polo 735 high 23.4 68.0
Cooljag SFO-H high 23.6 60.6
Alpha PAL-8150 23.7 58.9
Zalman CNPS9500LED (clip parallel) high 23.8 50.3
AVC Z7U3301001 (stock 939) high 24.6 59.9
Gigabyte 3D Cooler-Ultra high 24.8 63.0
Scythe Shogun high 26.0 45.9
EKL V8 high 26.3 57.5
Gigabyte 3D Rocket-Pro high 26.9 56.7
Gigabyte 3D Cooler-Pro high 27.0 62.5
Gigabyte 3D-Rocket 28.9 50.7
Vantec Mach1 high 29.2 56.9
CoolJag SFO-D(18SC) 29.6 64.0
Zalman CNPS7000A-Cu high 30.3 45.2
Dynatron SK-V24 30.3 56.4
Zalman CNPS7000-Cu high 31.0 45.2
Coolermaster Hyper48 31.7 43.6
Scythe Kama SCKK1000 31.9 47.5
Scythe Samurai SCSM1000 high 32.1 51.6
Zalman CNPS7000B-CU high 32.3 44.9
Thermaltake Silentboost K8 32.3 49.7
Jetart JAX801 33.2 53.5
Dynatron A22 34.5 44.5
nPowertek NPH K8-1 34.6 52.2
Ajigo MF043-044 (stock 754) 35.0 45.4
Verax Quattro 1 36.9 30.9
Arctic Cooling Silencer 64 Ultra TC 37.5 55.5
Gigabyte NeonCooler 8-BL 37.7 42.0
Titan TTC-K8ATB/825/SC 38.7 63.1
Evercool K802-715 42.1 51.5
Evercool Magic Cooler 46.6 55.5
125w thermal test (°c) noise level (dba)
*heatsinks are ranked according to the 125w thermal test results column (rise over ambient temp.). low temperatures with low noise levels are considered best. for reference heatsinks with variable-speed fans, only the high speed (12v) fan test result is included in the comparison sheet; more detailed results reside in each specific heatsink review.

the frostytech mk.ii platform stresses each k8-class heatsink with a 125w heat load. once equilibrium is reached we note the rise in temperature (2nd column from the right) above that of the ambient air temperature. the far right column identifies the noise level of each specific heatsink, and naturally the quieter the better!

The Coolermaster Hyper48 is an older heatsink, and what was once a high end thermal solution is now really a mainstream cooler. The Hyper48 achieved a rise above ambient temperature of 31.7°C, with 43.6 dBA noise output. Given its +800gram weight and low noise levels, the Hyper48 works well as a socket 754/939/940 heatsink for moderately paced AMD Athlon64 chips. Toss in compatibility with all that Intel has to offer and the versatility is certainly compelling.

Although a beefy copper cooler isn't for everyone, the Coolermaster KHC-L91 Hyper48 heatsink has its place and can handle the task at hand. You can judge for yourself if it meets your own personal thermal requirements by considering its position in the FrostyTech K8 heatsink reference list above. While not listed here, when running with a low fan speed the Zalman CNPS9500-LED is the only heatsink we've thus tested which nets both lower temperatures (29.7°C) and sound levels (36.2 dBA) against the Coolermaster Hyper48 heatsink.

Related Articles:

For more reviews on the latest heatsinks and cooling solutions, rely on FrostyTech's inventory of 350+ heatsink reviews. Here are a few other articles that you might enjoy as well...

1. ALPHA PAL-8150 ATHLON64 HEATSINK REVIEW
2. EKL V8 AMD ATHLON64 HEATSINK REVIEW
3. Gigabyte G-Power Pro GH-PDU21-MF Heatsink Review
4. Arctic Cooling Freezer 64 Pro Athlon64 Heatsink Review
5. Arctic Cooling Silencer 64 Ultra TC Athlon64 Heatsink
6. Cooljag SFO-H (68YC) Skived Athlon64 Heatsink Review
7. Alpha Novatech S-PAL8952 Pentium4 Heatsink Review
8. Verax P17CuX Ultra Quiet Heatsink Review
9. Spire Verticool SPA49B0 Socket A Heatsink Review

 Previous Page ° Heat Sink Review Index  

Table of Contents:

 1:  Cooler Master Hyper 48 KHC-L91 Heatsink Review
 2:  360° View - Coolermaster Hyper48 KHC-L91 Heatsink
 3:  Surface Roughness and Acoustic Comparisons
 4: — Final Heatsink Temperature Comparisons

List all CoolerMaster heat sinks that Frostytech tested?

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