i recently purchased another 2 rads. one is 240x120 and the other 120x120. im also looking to get a gfx water block for my 8800gtx. i already have a kit with a 240x120mm rad and a pump cpu block etc. i bought a new 240mm rad for ext as i havent got room for my internal one. basically i wanted to know what order i should have everything in the water cooling circuit.. i was thinking... pump---cpu block---120x120 rad---gfx block---240x120mm rad---res---pump... what do you think?
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where should everything go in my loop?
- Thread starter Teknokid
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Arcygenical
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use whatever order uses the least tubing.
Arcygenical
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Most "inline" pumps dump their heat load to air and not water...
I doubt there'd be more than a degree of difference, but technically you're right.
Tigerbiten
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The only realy fix set is the Res -> Pump.
That cause the least pressure drop on the intake of the pump and so maximizes the flow rate.
Other than that you can put the items in any order.
always try to keep the flow rate high.
So try to minimize the lenght of tubing used but also try to keep all bends as smooth as possible.
So if a slightly longer route keeps all bends smooth then I would go for that.
Luck .........
That cause the least pressure drop on the intake of the pump and so maximizes the flow rate.
Other than that you can put the items in any order.
always try to keep the flow rate high.
So try to minimize the lenght of tubing used but also try to keep all bends as smooth as possible.
So if a slightly longer route keeps all bends smooth then I would go for that.
Luck .........
Arcygenical
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Un huh... And I'm breaking that rule
. Didn't matter one bit.The DDC dumps most of its load into the water. Pumps like the MCP655 dump most of it to the air. Basically if the rotor of the motor is submerged in the coolant (like the DDC), a lot of the heat load is going to go into the water. If the motor is isolated from the flow (like most other pumps), the water temps aren't as affected - although with something like an Iwaki, a decent amount does get into the coolant.
Even so, it's not a huge amount of temperature delta. If you're cooling 180W of heat load from chips with all the blocks inline (with no radiators between them) and you've got a 10C delta (AFAIK that's HUGE for a high flow setup) between the point before the blocks and after the blocks, then an 18W DDC will have about 1/10th the effect on temps as your 180W load. i.e. it'll introduce an extra 1C temperature increase. Now, the question becomes: are you pushing your system to the point that 1C will make or break your OC goals? For most people who want a system they can use day in day out, the answer is no.
Do some reading on xtremesystems.org forums. They've typically got better info on technical details of temps and heatloads. IIRC, Nobody running a high flow setup (large diameter, with DDC(s), MCP655s, Iwaki, etc.) gets a 10C difference between hottest and coolest points in their loop; it's more like 1-3C. That means that the temperature change due to the heat dump of a normal pump (DDC or MCP655) is basically negligible (<<1C). And the faster your water flows, the more negligible this difference becomes.