Can my radiator handle this?

I

Imprez04

Limp Gawd
Joined
Jul 27, 2008
Messages
206
Currently im running a pretty nice and cool loop..


specs:

DCC pump w petratech WB
swiftech 360mm radiator
D-Tek Fuzion CPU Waterblock - Cooling a 3.6Ghz Q6600
8800GTX w/ Dangerden full cover WB

currently i am getting a 52*C temp on my GPU, and 36*C on my q6600 when idle.

on load, my GPU goes up to 62, my CPU gets to 44.

My question is, how well would my loop handle another 8800gtx? i really need the same video card for when i run multiple monitors (4) when using OSX86. (programming iphone apps).

at the moment i have a non-WC 8400gs as my other card for the screens, however OSX86 nvidia drivers dont work with two videocards of different memory sizes.

this is not an OS thread, so keep it on topic.. and tell me if i can just throw another 8800gtx in there =)
 
It wouldn't handle it at all. Ideally, you'd need at least another 2x120 in order to use low speed fairly quiet fans, and another 1x120 if you're willing to deal with a loud Delta or Panaflo... which I'm fairly sure you're not.

I'd recommend you put a Accelero Xtreme or similar replacement HSF on the second GTX rather than a waterblock if you feel the stock HSF is too loud. It will be much less expensive and give similar temps without too much noise, assuming you have space for it in your case / with your motherboard configuration.
 
You should be OK as your heatload isn't maxing the radiator. Although it never hurts to have more radiators!
 
R1ckCa1n said:
You should be OK as your heatload isn't maxing the radiator. Although it never hurts to have more radiators!
Click to expand...

A 3.6Ghz quad and a 8800 GTX is definitely reaching the limit on a 3x120 rad, at least with quiet fans it is.. another GTX will push it way over the limit.

OP, how do you arrive at your load numbers? In game / application, via a load testing suite, or what? Try running Prime95 Small FFTs on all 4 cores and Furmark in a loop for an hour and see what temps you get.
 
The radiator can handle 450 watts of load which is not being produced by a Q6600 + 8800 (or by 2 barely)
 
R1ckCa1n said:
The radiator can handle 450 watts of load which is not being produced by a Q6600 + 8800 (or by 2 barely)
Click to expand...

It might be able to handle that with 3 Deltas on it at full speed, but I seriously doubt the OP is willing to listen to that.
 
With a Thermochill PA120.3 and 3 Panaflow L1A's I'm running a Q9450, 8800GTS and Cooling the NB without any problem. Granted I havet gamed the card, but its actualy running cooler with my new WB on it than before.
 
Justintoxicated said:
With a Thermochill PA120.3 and 3 Panaflow L1A's I'm running a Q9450, 8800GTS and Cooling the NB without any problem. Granted I havet gamed the card, but its actualy running cooler with my new WB on it than before.
Click to expand...

The northbridge adds very little in the way of heat to a loop -- 25-30 watts max.
 
silent-circuit said:
A 3.6Ghz quad and a 8800 GTX is definitely reaching the limit on a 3x120 rad, at least with quiet fans it is.. another GTX will push it way over the limit.

OP, how do you arrive at your load numbers? In game / application, via a load testing suite, or what? Try running Prime95 Small FFTs on all 4 cores and Furmark in a loop for an hour and see what temps you get.
Click to expand...

when im running Prime96 + ATI tool of course it will be higher. i ran it for an hour, my GPU was at 74 and processor at 56. however, you never actually reach these high limits, thus i dont really care for them too much.

as for the question:
i really didnt think i wouldnt be able to handle it without getting a second radiator in my loop.. looking for false hope i guess. i am running fans with quite a bit of airflow (and a bit on the loud side), so being loud isnt really a big deal for me. Also i think that those temps are a little low because of how cool i keep my room, i get uncomfortable when my room gets past ~72*F (~22*C). (an no, i am not a bear, have fur, or anything like that.. im actually quite small Oo).


anyone know where i can put another rad in my Cosmos S (360mm is top mounted)? i hate external mounting =/
 
Adding another 8800gtx to your loop would raise your heat wattage to about 570w. But id recommend using some 3000rpm scyth kaze fans to keep you at a 10c delta for "ok" performance if sticking with your 320 rad. Best thing to do is just split your loop and put your cpu on a mcr220 for the best balance between noise and performance.
 
Imprez04 said:
anyone know where i can put another rad in my Cosmos S (360mm is top mounted)? i hate external mounting =/
Click to expand...

I'm currently playing with how to setup my WC loop in a Cosmos S myself. I had hoped to mount the old 120.2 rad in the front but that's not feasible with a BIP 120.3 in the top (plus it's overkill for my setup really, although I'm only using 800rpm fans).
I've found that you can use the bottom fan area for a 120.1 if you have a radbox or other method of raising the fan and radiator - I've spaced out four small rubber feet near the fan grill and have a radbox sitting on them (without the backplate - that really restricts airflow). A Scythe S-Flex fan and a dual-row XSPC radiator (single) is fitted to it. I had to shift it towards the front a bit further than I thought, otherwise the tubes get in the way of where the motherboard will sit. It also required leaving the first two 5.25" bays empty. But I'm happy and this will provide a bit of extra oomph if necessary (the fan is a 1200rpm one unlike my others, which will be on a fan controller and usually turned off completely). I was a bit miffed at their placement of the bottom fan grill, since there is absolutely no chance of mounting a radiator to it.
 
see mine on the link above this is about the max rads and fans you can get!!!!
 
I had a 120.3 radiator in the top and a 120.2 right behind the hard drive cage and worked just fine.
 
swale said:
how did youi manage to get the rad there???

where did you put your HDD's
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+1, I''m intrigued. I've managed to get my 120.2 where the single rad was but can only make effective use of a single fan, so one half would have to rely on convection alone. I have 4 hard drives so the 4-in-3 cage is a must. I did consider flipping the drive cage around (so the sata/power cables face the front of the case) and mounting the rad via the fan, but it looks very tight with regard to pump placement up-front (currently plan to mount it veritcally to the right of the motherboard area, but obivously wouldn't be able to do that with a rad in the way).
 
Adding another 8800gtx to your loop would raise your heat wattage to about 570w. But id recommend using some 3000rpm scyth kaze fans to keep you at a 10c delta for "ok" performance if sticking with your 320 rad. Best thing to do is just split your loop and put your cpu on a mcr220 for the best balance between noise and performance.
Click to expand...

Where do you get 470w from? The 8800GTX, with a fullcover block produces around 150w of heat in some situations, usually less. A Q6600 at 3.6ghz @ 1.5v has a tdp of around 200w, but will produce between 120w and 150w under most full loads. Even if we take the worst case TDP's of the three products, they're right around 450w...

If your radiator is set up with 1600rpm fans running at 12v, it should be able to dump all the heat produced by the loop to air... Would I do this? Well, no way... I'd throw in a second radiator (even a single 120mm one would suffice) just to help things out... But you Could theoretically do such a thing.
 
Arcygenical said:
Where do you get 470w from? The 8800GTX, with a fullcover block produces around 150w of heat in some situations, usually less. A Q6600 at 3.6ghz @ 1.5v has a tdp of around 200w, but will produce between 120w and 150w under most full loads. Even if we take the worst case TDP's of the three products, they're right around 450w...

If your radiator is set up with 1600rpm fans running at 12v, it should be able to dump all the heat produced by the loop to air... Would I do this? Well, no way... I'd throw in a second radiator (even a single 120mm one would suffice) just to help things out... But you Could theoretically do such a thing.
Click to expand...

I personally find a 2x120 with a pair of Panaflo 120mm low speeds at 12v (which are unbearably loud, annoying even with headphones) to be barely enough for a pair of 8800 GTXs... at stock clocks. If my quad were in that loop too, which runs hot enough that when I had it on the same rad it got in to the low 60s load.... well, I don't even want to think about that.
 
silent-circuit said:
I personally find a 2x120 with a pair of Panaflo 120mm low speeds at 12v (which are unbearably loud, annoying even with headphones) to be barely enough for a pair of 8800 GTXs... at stock clocks. If my quad were in that loop too, which runs hot enough that when I had it on the same rad it got in to the low 60s load.... well, I don't even want to think about that.
Click to expand...

Oh, of course. As I said, I would never, ever want to do something like this, but if you don't mind a 20c delta over air, the radiator would be perfectly capable of dissipating the heat... Your ears... well, maybe they wouldn't be so forgiving.
 
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