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COOL and loop sequence?

mavalpha

[H]F Junkie
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Jan 3, 2005
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I am thinking of getting Corsair's COOL for my upcoming A64 rig, and I will be adding a GPU waterblock for my GF6800- any thoughts/recommendations? Also, would it make sense to watercool my chipset? It'll be an nForce3-250Gb, in the form of DFI's s754 motherboard.

My biggest question is: how important is the order in which I hook everything up in the loop?
Right now I'm thinking reservoir-pump-CPU-GPU-radiator-reservoir, but I'm not sure if this is the right sequence. The way I see it, the warm water is in the system for a minimum possible amount of time, and it goes from a hot processor to an even hotter video card for a consistently high delta. (I don't know where the chipset would fit in this loop either.)
I also had a really dumb idea of water-cooling my RAM, since I will almost certainly be running a stick of BH5 at close to 4V. Has anyone done this, or do they even make a block for it?

Off topic: Is this a good kit, or is there something even better for the price? Conversely, is there a cheaper kit with similar reliability?
 
mavalpha said:
I am thinking of getting Corsair's COOL for my upcoming A64 rig, and I will be adding a GPU waterblock for my GF6800- any thoughts/recommendations? Also, would it make sense to watercool my chipset?

If you absolutely want the best GF6800 waterblock, I'd suggest you go with this one: http://www.dangerdenstore.com/product.php?productid=64&cat=48&page=1

mavalpha said:
My biggest question is: how important is the order in which I hook everything up in the loop?
Right now I'm thinking reservoir-pump-CPU-GPU-radiator-reservoir, but I'm not sure if this is the right sequence. The way I see it, the warm water is in the system for a minimum possible amount of time, and it goes from a hot processor to an even hotter video card for a consistently high delta.

Not very, the heat being put into the water, and the amount of heat that the water can absorb are both fairly constant (assume under load or idle). So, regardless of how you put the sequence of waterblocks, eventually the water will get a certain amount of heat, and the radiator is disperse a certain amount of heat, both constant. In other words, the temperatures will reach a state of equilibrium. Regardless of what sort of loop config you have. Another way to think about it is the water coming out of the radiator is arguiably cooler, but because of the rate at which the water is travelling, it will not be much less than a degree or two cooler than the rest of the water in the loop.

It is recomended however, to keep the resovoir just before the pump.

mavalpha said:
I also had a really dumb idea of water-cooling my RAM, since I will almost certainly be running a stick of BH5 at close to 4V. Has anyone done this, or do they even make a block for it?

I'm sure someone somewhere has done it, but I Have yet to see someone on this board do it. Unless you have a very high efficiency loop (with at least a dual 120mm heatercore), I wouldn't recommend putting the GPU, the CPU, the chipset and the RAM into the loop. If you do get watercooled ram, let me know. I'd love to see the block design :)

mavalpha said:
Off topic: Is this a good kit, or is there something even better for the price? Conversely, is there a cheaper kit with similar reliability?

The corsair kit is based off of a swiftech kit (exactly the same except the Corsair block has 41 less pins). Now from the reviews I've read of the swiftech kits and the corsair kits, they're very good for the money.
 
If you really want to you could run a couple of parallel loops instead of one series loop.
I don't know if anyone around here has done it, but if your pump can produce enough head then it'll work. It'll even let you valve each loop in order to balance the flow rates in each loop to optimize for the greatest cooling where you need it most.

About the ram.... I think I seen a write up on one of the aussie websites where a guy soldered an 1/8" or 1/4" copper tube to some copper blocks and thermo epoxyed them to his RAM's chips. He had to flatten the tube to get enough room between the sticks on his MB. They even had a modded water cooled power supply.

I think someone had too much time on his hands :rolleyes: at least he had more than me :eek:
 
About the RAM cooling, have a gander over here http://www.xtremesystems.org/forums/showthread.php?t=38945

As to the order of the loop, doesn't really matter. Also the chipset block will net you zero performance gains. A64 chipsets are not hot, they dont run hot at all because there is no memory controller on them. You simply dont need a chipset block all it will do is add restriction, lower your flow rate, and hence worsen your overall loop performance.
 
I have that same setup. I'll be running:

res->pump->rad->CPU->GPU->res

I figure I'll be putting the coolest water to the CPU at that point (at least logic would suggest). If it doesn't work to my liking, I'll change something. All my parts will be in tomorrow (hate when I forget to order something as crucial as AS5 and a baybus).
 
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