Help with watercooling temps

jimmyjimmyo

jimmyjimmyo

jimmyjimmyo

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Joined
1 Aug 2006
Posts
461
Hi guys

I have a quick question

I have recently changed my watercooling loop from the cheap one that was included in my kandalf lcs.

I changed the cpu block to a d-tek fusion and added a EK 8800gtx block and switched everything to 1/2" pipe. but my temps are now worse at the same overclock (using the thermaltake kit I was at 32 degrees idle with my 6600 @ 3.6 ghz now I am at 42 idle. under both kits the cpu hits 60 degrees full load)


I also added a 120.1 black ice extreme rad to the loop inbetween the cpu and gpu.

I think the problem might be the original 120.3 rad as I think it is killing the flow through the whole system due to the tiny inlet/outlet pipes on the thermaltake rad (does that sound possible).

So my question is what rad should I be looking at buying next (if it is the rad)? and why am I getting a 20 degree jump between idle and full load using the parts I have do you guys think my cpu might be concave and need lapping?

Thanks for your help
 
jimmyjimmyo said:
Hi guys

I have a quick question

I have recently changed my watercooling loop from the cheap one that was included in my kandalf lcs.

I changed the cpu block to a d-tek fusion and added a EK 8800gtx block and switched everything to 1/2" pipe. but my temps are now worse at the same overclock (using the thermaltake kit I was at 32 degrees idle with my 6600 @ 3.6 ghz now I am at 42 idle. under both kits the cpu hits 60 degrees full load)


I also added a 120.1 black ice extreme rad to the loop inbetween the cpu and gpu.

I think the problem might be the original 120.3 rad as I think it is killing the flow through the whole system due to the tiny inlet/outlet pipes on the thermaltake rad (does that sound possible).

So my question is what rad should I be looking at buying next (if it is the rad)? and why am I getting a 20 degree jump between idle and full load using the parts I have do you guys think my cpu might be concave and need lapping?

Thanks for your help
Click to expand...

Your rads are killing the flow - the thermaltake rads are very restrictive as the are based on an old design. Did you have the GPU in the loop before - this could explain the rise in idle temp, along with the reduction in flow. What pump are you using - please don't say a thermatake one :eek: You also have to figure in the fact that as you are using thicker tubing. Your pump is having to pump a lot more water around and may not be able to cope so well as its head pressure will be significantly reduced - blow through a straw then blow through a hosepipe and you will catch my drift;)

My advice would be to ditch the two rads and go with a single thermochill PA 120.3 if possible(PA120.2 if not) and upgrade the pump to something like a DDC+/D5vario.
 
Last edited:
w3bbo said:
Your rads are killing the flow - the thermaltake rads are very restrictive as the are based on an old design. Did you have the GPU in the loop before - this could explain the rise in idle temp, along with the reduction in flow. What pump are you using - please don't say a thermatake one :eek:

My advice would be to ditch the two rads and go with a thermochill PA 120.3 if possible and upgrade the pump to something like a DDC+/D5vario.
Click to expand...


Yeah I did add the gpu block afterwards and I am using a d4 that you sold me on MM (ha ha) so I don't think the pump is the issue.

If I went for the thermochill pa 120.3 would the temps return to the old level or should i expect them to be a bit lower but not by much due to the heat having to be dumped from the gpu?
 
Yeah that pump is good enough for that. I would think the temps would drop a fair bit with the PA as your flow will rise and that rad will also cope a lot better with the heat that is being dumped into the loop. Concentrate on LOAD temps not idle m8. You will also find that you do not need high CFM fans blowing on the thermochill to get good results so the noise of your PC will also drop ;)

Another thing to consider when comparing your old loop to the new one is that ambient temps will have risen in the last week or so (yay for sunshine) so your idle temps will also rise to reflect this. Obviously adding a GPU to the loop (especially a 8800GTX) will have an effect on the temp aswell. Seriously, get a PA120.3 you won't be dissappointed ;)
 
Sounds to me like you've decreased your temperature delta from 28C to 18C despite adding an additional heatload. That's pretty good.

However, remember that the thinnest part of your loop defines the flow and if you still have 10mm fittings on your Thermaltake rad you will be heavily restricted at that point. I wouldn't have two rads if I were you. Just get one proper one that's capable of handling your heatload.
 
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