Just got my AMD 4-heatpipe HSF in and installed.
My current setup and previous HSF:
Athlon 64 3000+ (stock speeds)
Asus A8N-SLI
OCZ Platinum Rev. 2; 512x2
eVGA 7800GT CO w/Zalman VF700
WD 200GB SATA
Benq 1640 DVD-RW
Seasonic S12-500
Audigy 2ZS
Coolermaster Wavemaster
Thermaltake K8 Silent Boost
NO overclocking on the processor, ever. Cool N' Quiet is on (drops voltage to 1.10 and CPU to 1000mhz when idle and under light use). The 7800GT is factory OCd to 468/1198.
All wiring in the case is neatly arranged, and IDE cables are the round style.
I have the Asus QFan option on, which automatically adjusts the fan speed of whatever fan is connected to the "CPU Fan 1" 3-pin header on the mobo. This means that the 80mm fan on my Silent Boost ran at ~700RPM when the CPU registered a temp of 32C at idle, and ramped up to 1500RPM at full load, which got my CPU up to 51C.
Previous temperatures:
Room temperature: 23C
Case ambient at idle: 31C
Case ambient at load: 35C
CPU at idle: 34C
CPU with light load (internet, word processing): 37C
CPU at full load (Prime 95 or RTHDRIBL or any recent FPS, i.e. F.E.A.R., Q4, SS2): 51C
GPU with Zalman set at 5V, idle: 45C
GPU with Zalman set at 5V, load: 71C (RTHDRIBL)
GPU with Zalman set at 12V, idle: 40C
GPU with Zalman set at 12V, load: 62C
My case has the following fan setup:
Two 80mm front intakes at 2100RPM
One 80mm blowhole exhuast at 1000RPM
One 80mm rear exhuast at 1800RPM
One PSU 120mm exhaust at ??? RPM (always below my hearing threshold)
One CPU fan that never got above 1500RPM, and idles at 700-900RPM
One chipset fan at 4000RPM
I can control the blowhole and rear exhaust fans, and if I crank them up to 3500RPM, I can generally lower idle temps by 2C, and load temps by 4C for the CPU- results are similar for the GPU.
Previous HSF was mounted with AS5; GPU was/is mounted with AS Ceramique. I have no data for the stock AMD HSF (non-heatpipe version), as I never used it. The Zalman VF700 at 5V is comparable to the copper (stock) cooler on my 7800GT (idle and load), but is dead silent.
My current setup:
Everything the same, except I removed the TT Silent Boost and installed the 4-heatpipe AMD stock cooler. I cleaned the CPU and AMD heatsink with isopropyl alcohol, and remounted with Ceramique.
Temperature readings with AMD heatpipe HSF:
Room temp: Same (23C)
Case ambient at idle: Same (31C)
Case ambient at load: Same (35C)
CPU at idle: 34C
CPU with light load (internet, word processing): 37C
CPU at full load (Prime 95 or RTHDRIBL or any recent FPS, i.e. F.E.A.R., Q4, SS2): 48C
GPU temps are all unchanged.
The same tests were used as previously to stress the CPU and GPU. Fan settings were left unchanged. If I crank up the exhaust fans, there is only a 1C drop at load, from 48C to 47C. Idle drops 2C.
The current CPU fan runs at 1000RPM at 34C, and gets up to 1800RPM at full load (48C). Needless to say, it is inaudible through the case.
In summary, the new HSF dropped my load temps by 3-4C, and did not affect my idle temps. The fan is no louder. I have no idea how it would perform if I increased the CPU fan airflow, but I plan to try it out soon. I also have the Silverstone 92mm- fan-on-an-80mm-frame on order, and may give that a whirl just for fun.
Installation was a breeze- no mobo removal needed, and tool-free. The hardest part was getting the old HSF off (AS5 stuck to the heatsink base). The fan is actually pretty nice- solid and smooth, and although the base of the AMD heatpipe heatsink is not a mirror polish, mine was at least scratch-free and flat as far as I could tell- on par with the TT heatsink.
I should mention that there is a pretty direct drop in CPU temps as my room temp decreases. I idled at 30C at a room temp of 20C, and got up to 46C on full load with my previous HSF. I have yet to try this with my new HSF. In any case, the true test will come as summer arrives, as I do not have AC, and it gets up to 31-32C in my room.
To those who are wondering, the Ceramique obviously has not had 25hrs to "break-in." However, I never saw any changes in my GPU temps during the break-in period. I assume that temps as they are now is what they will be. I also do not know from personal experience if Ceramique is different from AS5 with respect to temperatures. I just know that for me, the convenience and non-capacitive nature of Ceramique is more than enough to make up for a potential 1-2C drop in temps.