Originally Posted by xtremetechuk;13772818
I will be making a quad direct die setup soon, and will be using aluminium. I'm struggling to find copper blocks regardless of price, even on eBay I can't seem to find suitable copper. I'm not so sure that TEC waterchillers are the future anymore, take the coolit freezone elite for example. The delta between coolant and CPU temperatures was 45C on load. The temperature difference between coldplate of direct die and CPU seems to be significantly lower than that of waterchillers.
Do you remember the coolermaster wavemaster? God she was gorgeous, I'm tempted to mod one to allow a TC PA120.3.
I look forward to your thoughts on this matter.
FYI, the phobya 1080 radiator can potentially hold an i7 860@4Ghz at 28C, the HD6950 was also on the same loop. This makes me wonder if TEC's are worth the hassle and time for sub-ambient. Ultrasonic2's 2*50mm direct die could only hold an i7 920@4Ghz at around 30C.http://www.overclock.net/peltiers-tec/730714-elloquins-2-x-50mm-tec-block-3.htmlhttp://forums.bit-tech.net/showthread.php?t=208226
Those numbers look off imo, no screenshots claiming frankly imposibly low numbers.
Especially for over 1.4V, I believe the cooling could keep the coolant temperature at 6oC above ambient, but there is no possible way that the CPU on load could be 6oC above ambient on liquid cooling.
I mean I haven't done a heat balance on it, but I'm questioning whether it's physically possible:
I mean looking at this, assuming that the coolant is perfectly cooled at 22oC (stated ambient in that example), which it wont be. You then have to transfer heat from the CPU through a layer of TIM, through several mm of copper to the fluid. A DT of 6oC between CPU and ambient on load sounds like a lie...
Comparatively, if your "waterblock" is sub ambient, and you work with more realistic DT values, you actually can achieve them.
My issue of course will be transferring heat through 40mm of aluminium, I don't know if it will be too much.
I have some other block designs dwelling away in my imagination, but we'll get there when we get there
Also, sorry for the lack of update in a while, I'm having a bit of trouble finding a company to cut my aluminium block. People asking me for project plans and such
*sigh* really don't need to make it complicated...