Water Cooling Is Recommended For 4.0 GHz, Continued
Throttling back causes processor performance to fall off. At 4 GHz, power consumption also increases by a few watts, so that when compared to its original power consumption level of about 80 W, it must now deal with 195 W at maximum load.
|Pentium D 805||Zalman Cooler|
|Clock Rate||100% Utilization||Idle Mode|
|4.10 GHz||crash||52 °C|
|4.00 GHz||80 °C||49 °C|
|3.80 GHz||76 °C||47 °C|
|3.60 GHz||74 °C||46 °C|
|3.32 GHz||71 °C||46 °C|
|2.66 GHz||64 °C||44 °C|
It was clear that air cooling solutions were no longer sufficient to let the system function at 4 GHz in all situations, so we switched to a water-cooled solution for this CPU. It worked!
Water cooling let the system transfer heat away from the CPU and keep working at top speed.
At a 200 MHz FSB clock rate, we can use the complete memory bandwidth for DDR2-667. Likewise, DDR2-800 now appears as a usable selection in the BIOS.
With memory speeds of up to DDR2-800, we can exploit 4 GHz CPU performance to its fullest potential.
We ran through our benchmarks with both DDR2-667 and DDR2-800 memory configurations.
At a setting of 1.5625 V for core voltage, the CPU we purchased at a retail outlet ran trouble-free.
Of course, we would like to keep the cost down as much as possible.
We have no idea where the best bang for the buck will be. For us a stable system is more important than blazing speed. Thus, the HP's worked fine for what we originally got them for; it’s just that our graphics and video production software are forcing upgrades in speed and power.
The D850 chip sounds incredible and the power supply we already have to get will handle overclocking that chip. It even sounds like that chip will work in the existing mobo if we can find a way to change the clock speed from inside windows instead of from the BIOS. HP BIOS does not allow adjusting the clock speed in the BIOS but can't BIOS just be changed as well; isn't it just an EPROM?
Anyway, even if we opt for changing out the mobo for another case compatible Asus mobo, we still have to answer the question of which board and chip combination will give us the most stable service for the least cost.
Any ideas that might help us plan the most appropriate upgrade and the least cost?
With the price of components that you need to make this run stable, and the amount of electricity that this would use, a cheap Core 2 and motherboard and DDR2 memory would cost you less in the long run.
Intel Pentium Dual Core E5200
Kingston DDR2 2x2GB 800MHz
This should cost less than $200.
no hate pl0x