This little guy stands out from the competition by being a bit smaller than most and fabricated entirely of copper. It has four copper heat pipes, copper fins, and a 92mm fan. The fan features pulse-width modulation (PWM), which varies speed according to your CPU’s temperature (although this feature is supported only on LGA775 boards as of press time).
When the CPU core reaches a designated temperature (set in the BIOS), the fan spins up to 3,200rpm; but we never reached that level in our testing, so the fan ran at a constant—and quiet—1,440rpm.
This product was one of the easiest to install of the entire roundup (in fact, all the Cooler Master units were a cinch). In our tests, the Hyper 48 performed better than the stock coolers across the board, but it didn’t reduce temperatures as efficiently as the other coolers in this roundup.
--Josh Norem
| AMD @ idle | AMD @ load | Intel @ idle | Intel @ load | Sound output (dBA) | |
| Hyper 48 | 33 | 48 | 37 | 54 | 63 |
| Stock cooler | 36 | 52 | 42 | 57 | 67 |
Month Reviewed: September 2005
Verdict: 8
URL: www.coolermaster.com
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