worth changing to dual loop?

vectisitch said:
i read a lot about watercooling before i set my loop up in the first place.it seemed to me that pulling in air or pushing it out was'nt as important with wc as it is in air cooling.thats why i set it to push air out the case.i also don't want to keep clogging the rads up with dust.i don't want to lower the vcore as it's the lowest it will go at 4.7 and i bought sandybridge to clock right up,otherwise i might as well of stayed with my i7-930.i can't afford to keep buying chips to get a good clocker so i'm stuck with it.however,the issue here is,why was i getting highs of @74c with a 360 and 240, and now getting highs of @81 with 2 360's with the same settings as before????
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The difference between a 360+ 240 config or a 360+360 config is negligible, what were you expecting? Plus, you're on a single loop so 2 rads won't alter temps significantly as the water temp will soon equalise throughout the loop.

You've been given several hypotheses: add more fans; increase fan speed; change fan orientation; lower v.core, try them all and report back.
 
mike gunnz said:
28-30 on a 5970, or any high end GPU at full load is extraordinarily low, props to you. ;) I've never got close to that - not even in winter.
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Scotland=winter :)

If you want good temps you have to lower the water temp or exhaust the heat quicker...cooling the fins on the rads More to inturn cool the water is the only way to do this unless you buy an inline chiller and take out the rads altogether then you will see some good temps....
 
There are a number of good and bad points so far in this discussion, imho, like any discussion :)

1. The suggestion made earlier of trying some of the ideas is the best thing for the OP to do, watercooling like this is a hobby, if you expected to go into it without having to rip your loop down a few times to find the optimimum setup then go back to air cooling :)

2. Ambients, everyone forgets, that your ambients are always going to play an enormous part of how well your loop cools your kit. Whenever someone gives a "my temperature are XX" then they should also give the ambient temp measured at the same time.

3. Air-flow direction, there is no hard and fast rule (see 1) you have to work out whats best for your setup alone. I've had setups that run harder and hotter than most anyone in here that originally had the 240 (front) and 360 (top) as intakes with a 120 (rear) as exhaust. Simply switching the 360 (top) to exhaust lowered temps by 10-12°C. Sometimes blowing hot air into your rig without adequate ventilation isn't the best idea. Basically you should have equal # fans pulling in as pushing out as a principle, but again, see point #1 above.

4. Separate loops only come into their own when you go tri-sli and above. Otherwise you are only talking a few degrees either way. (point #1 applies)

5. GPU's respond much better to watercooling than CPU's you will see a much bigger temperature drop on the GPU's than on any high end Intel CPU.

6. Fans are important, having the right fans is essential. You said that turning your fans up to full speed made no difference? Thats plain wrong right there, turning the fans up should make an immediate difference in temps. Get better fans.
 
my pc is my hobby.i'm a tinkerer by nature so i love stripping it out and rebuilding.i do it all the time,drives the missus crazy.high noise is not a problem,anything that drowns out the kids is a plus for me.i've tried dual and single loop.i've ordered 3 [FONT=&quot]SANYO DENKI 120mm x 38mm fans which i'll put on 1 360 rad and i'm going to add 1 240 rad on the outside of the case
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Heres mine:
P1100244-1-2.jpg


Theres an extra fan in the front radiator now, thats the only difference, oh and the drain pipe is gone.

CPU is a [email protected]
GPU's are GTX470 (3 working currently) clocks: core/shaders/mem = 775/1550/1674

Ambients are around 20°C

CPU full load on its own: 54°C
Turn on the three GPU's at 100% and CPU cores climb to 60°C
GPU's full load: 61°-67°C

But its also cooling the N200 and VRM's in the loop.
 
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