When it comes to cooling hot processors, you can't beat a
phase change setup. Sure Liquid Nitrogen offers users lower operating
temperatures, but it's not a viable 24/7 solution. The Prometeia
Mach I can
Originally, the Prometeia Mach I used R134A coolant but since I was never able to leave
well enough alone, I had it recharged with R404A. That means my test bench Mach I
will be able to reach a lower operating temperature and have a higher cooling
capacity than a stock Prometeia Mach I/II cooler.
Mach I installed on the Athlon64 3500+, I started at the beginning again because
I thought it'd be interesting to see when and where I'd have to raise
Things were very uneventful until I hit 240 MHz (2.64 GHz).
Raising the voltage slightly to 1.6V stabilized the system at this
Further on, I had to raise the chipset voltage to 1.65V
at 253 MHz otherwise the system would BSOD randomly during the benchmarks. At
264 MHz (2.90 GHz) the memory started to top out, and I had to lower the
memory divider from 1:1 to 9:10 (the timings of 2-2-2-5 were kept). Increasing
the memory voltage past 3.4V didn't't help in this case.
To get past the 270 MHz (2.97
GHz) mark, I had to increase the processor voltage all the way up to 1.85V
as well as decrease HyperTransport to the 4x multiplier. Without these changes, the system
would not boot. The little Athlon64 3500+ maxed out at 277 MHz or 3.05 GHz;
no amount of voltage tinkering would allow us to stabilize the system past this point.
Believe it or not, the results I got from the Newcastle core Athlon64
3500+ are below average for this type of cooling. Too bad
I got a "dud". It still feels plenty fast though!
|PCStats Test System Specs:|
||AMD Athlon64 3500+|
||11 x 200 MHz = 2.2 GHz|
DFI LANParty NF4 SLI-DR (NF4-SLI)
||2x 512MB Corsair TwinX1024-3200XL|
||40GB WD Special Ed|
||Sony 16x DVD-ROM|
||PC Power & Cooling Turbocool 510W|
WindowsXP Build 2600
nVIDIA nForce4 6.39
Super Pi 1.1
Hexus piFast 4.1
not run any office benchmarks because no one would overclock for faster word
processing... really, trust me, they wouldn't.