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GPU Waterblock Question

V

vortec4800

Gawd
Joined
Sep 19, 2003
Messages
946
I'm trying to decide if I should buy a GPU waterblock for my Radeon 9800 (which is at a high overclock) to put in my soon-to-be watercooled system. If you attach the GPU block in line after the CPU block, which seems to be the way its normally done, wouldn't that actually heat up the GPU considering all the hot water from the CPU block exhaust is going into the "cold" water intake for the GPU block? This seems like it would not be effective at all, though I don't really see a better way of doing it. Is it worth having an extra waterblock, or should I just stick with good aircooling for the video card?
 
I dont have or know all the scientific formulas to determine how much heat the water absorbs when its in your CPU waterblock but I know its not like the water goes into the waterblock cold and comes out steaming hot, at most it gains about 1 or 2 degrees C if even that. The small amount of heat it does absorb really isnt going to effect GPU block temps unless you are running a TEC block on your CPU.

Some people run the GPU and CPU blocks in parallel where the water enters a Y splitter with one end going to the cpu, the other to the GPU and the from the two blocks enter into another Y connecter but this method lowers the overall flow rate of the loop which isnt recommended.
 
I have a TEC on my 9800pro, and my temps only went up 2c. Don't worry about it.
 
Originally posted by 2Fresh
I have a TEC on my 9800pro, and my temps only went up 2c. Don't worry about it.
Click to expand...

Don't worry about it as in forget a GPU waterblock, or don't worry about it as in don't worry about having the water from the CPU go to the GPU block? I'm confused... Heh...
 
the heat 'gained' by the cpu block is really minimal, the water's moving too fast to actually get 'warm'. You shouldn't worry about the GPU block being a poor performer. I dont even know if i like GPU blocks, after playing with them a few times... the bends are extreme and they drop flow more than i like. I might just go with a nice air cooler next.
 
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