Quote:
Originally posted by schoolie
OK, my magdrive 3 easily doubled my water flow. It's probably around 90gph. My CPU temp dropped about 1C.
|
Flowrate most likely isn't your issue. Flow is highly overrated and there have been absolutely zero formal tests showing a lot of flow rates vs. CPU temperatures... but it is good that your temperature has improved. Maybe you've found a flowrate sweet spot. Imagine a curve like y=-(x^2). let x = flowrate and y = efficiency. There is a sweet spot at the top of the curve. Once you push flow too hard, efficiency drops off. Same as if you don't push enough. It looks like you've gotten a bit closer to the sweet spot.
Quote:
Originally posted by schoolie
I do have one more question. Isn't it true that it doesn't make any difference how thick one applies thermal grease? If the block is properly seated, then the excess AS will squirt out the sides. Comments?
|
First, think of the theory behind heat transfer. The best possible heat transfer you could have would be to have absolutely zero thermal paste and two theoretically, perfectly, mathematically flat surfaces right on top of eachother. however, we know that there are microflaws within the surface of metals, regardless of how smooth we try to make them. Thermal paste is just designed to fill in the inefficiencies. If you put a lot of thermal paste on, you run a few risks. The first is the possibility of air bubbles getting trapped. As you compress the block down, air can get caught in between all the paste and mar your thermal transfer slightly (granted... these are SMALL pockets of air). Second of all, once again, if ALL the excess paste came out that would be great, but in reality, some will hang under there and cause a VERY slightly non flat bond between the CPU and waterblock. So that's why too much is bad. Follow the instructions on the AS site for best results.
Quote:
Originally posted by schoolie
Thanks Brad. Why are some people getting 10C over ambient with Vcore=2.05V?
|
Because the temp readings you are getting on a non-intel board are currently WRONG. You need to wire a thermal diode circuit or wait for the new mobos to get a temp reading. Your temp could be like 3 - 10 degrees off for all you know. For all you know, your CPU temps are much better than you think.