Crossfire 290X, G10+H55 Insanely hot temperature?

[realibrad]

Just so we are clear.

How many fans are the exhaust for the gpu? Im assuming 1 radiator per closed loop, and each one has 1 fan so a total of 2 fans for CF right?

I would change the direction of the gpu fans to intake, and then set the cpu fans to exhaust and the single rear to exhaust and crank them up.
Put the side panel on and crank up the system.
Check the max temps, and then take the side panel off again.

The air coming in needs to go somewhere and so you need to exhaust that out of the case. If the gpu fans are at max, but the exhaust fans are on low, the air gets backed up in the case, and causes positive case pressure. This means that more air can not be taken in over the gpu radiators and the gpu temps will shoot up.

 

[amenx]

I would think this be more efficient, since warm air naturally rises (Less dense).

The rear fan should be exhaust, since its on the upper half of the case. If its intake, then it may disrupt or cancel out some of the airflow which is rising to the top exhaust. Intakes should always be on the lower half of the case (and/or on the side if that option exists).

 

[Face2Face]

The rear fan should be exhaust, since its on the upper half of the case. If its intake, then it may disrupt some of the airflow which is rising to the top exhaust. Intakes should always be on the lower half of the case (and on the side if that option exists).

Good point, I have my case setup the same way dur....

I have an H100i 240mm at the top of my case and a TT water 2.0 Extreme 240mm at the bottom of my case for my NZXT G10 setup. My CPU temps and GPU temps are pretty good even when pushing a ton of voltage into the lightning.

Picture of my setup -

 

[SniperWulf]

I would think this be more efficient, since warm air naturally rises (Less dense).

I like Face's suggestion. If you do this though, how would the temps be on your CPU? You'd be getting warm air from the front and cool from the rear, all blowing across your CPU's radiator.

I'd probably try this:
- all 3 front fans as intakes with GPU radiators attached
- all 3 top fans as intakes with CPU radiator attached
- the fastest 140mm fan you have in the rear as exhaust

 

[Attic]

As requested

From what I can tell you have only 1x120mm intake.

Intake:
Rear 1x120mm

Exhaust:
Top CPU Radiator 2x120mm
Front 3x120mm



Options for change to improve temps:
Intake:
Move CPU Radiator to Front as intake (2x120mm)
Keep 3rd front 1x120mm as intake

Exhaust:
1x120mm Rear exhaust*
GPU radiators at top of case as 2x120 exhaust

*Experiment with this as intake if your GPU radiator fans can be cranked to 1200-1500rpms.


IMO that CPU cooling is way overkill, and focus needs to be on how to best cool GPU's and get that heat effectively out of the case. Placing the GPU rads at top of case seems critical to me in your setup, that's where ~500+watts of heat generation is going to be exiting. The CPU will only be generating 100-150watts.

 

[Makaveli]

I like Face's suggestion. If you do this though, how would the temps be on your CPU? You'd be getting warm air from the front and cool from the rear, all blowing across your CPU's radiator.

I'd probably try this:
- all 3 front fans as intakes with GPU radiators attached
- all 3 top fans as intakes with CPU radiator attached
- the fastest 140mm fan you have in the rear as exhaust

With the back fan being using used as an intake. When the psu is exhausting heat from the bottom its going to rise and be sucked in by that fan no?

 

[SniperWulf]

With the back fan being using used as an intake. When the psu is exhausting heat from the bottom its going to rise and be sucked in by that fan no?

It's a possibility, but it hasn't seemed to effect my rig much, if at all.

Love the case, but damn if it isn't tough to keep cool. I haven't had mine a week yet and I've probably changed radiator/fan configs at least 10 times already. lol

I've even thought about pulling the water out and trying all air just to see what happens.

 

[anetaxll]

I would think this be more efficient, since warm air naturally rises (Less dense).

Surprisingly this is actually working!!! What I did was I moved the bottom card's radiator to the back of the case where the exhaust are originally, and make them in push-pull config. I moved the 140mm to the front as an intake fan and I also top card's radiator is also in push pull config.

The results are

Top card 90C, VRAM 1 113C
Bottom card 61C VRAM 83C
CPU TEMP 87C

This cleary shows that this case has sh$tty airflow, because the second card's radiator was mounted at the back, it has no restriction like the noise dampened foam or side ventilation, the air comes straight in which allows the radiator to cool properly. Whereas the top card is very hot because it is not opened.

This config also increased my cpu temp by 7C as well.

May be its time to move onto another case and resell this case

 

[anetaxll]

 

[realibrad]

If you have the time/energy, try setting both the cpu and gpu fans to exhaust.

I would like to see temps if the case had to suck in air everywhere it could.

 

[anetaxll]

If you have the time/energy, try setting both the cpu and gpu fans to exhaust.

I would like to see temps if the case had to suck in air everywhere it could.

I have tried that, no luck. gpu temp wayy too hot

 

[Hitman928]

Glad you got it working better. The top VRM temps would still be too high for my liking. The case you have is a nice case, but not really designed for what you're trying to do and I think you're just asking for a bit too much out of it. Upgrading cases would probably be a good idea for what you're trying to do. I would look for a case with side/bottom fan mountings so that you could turn all of your rad fans to exhaust and only be pulling in cool air into the case. Best of luck.

 

[SniperWulf]

Did you take these out?

 

[anetaxll]

Glad you got it working better. The top VRM temps would still be too high for my liking. The case you have is a nice case, but not really designed for what you're trying to do and I think you're just asking for a bit too much out of it. Upgrading cases would probably be a good idea for what you're trying to do. I would look for a case with side/bottom fan mountings so that you could turn all of your rad fans to exhaust and only be pulling in cool air into the case. Best of luck.

It is a nice case indeed, I have to say that it is one of the nicest case on the market right now, sadly it doesn't suits my needs and it has to go, tried pretty much everything. Think I am getting the 760T or Air540 or phantek Enthoo Luxe or may be corsair 780T (once it releases)

 

[anetaxll]

Did you take these out?

No, I don't think it will make a huge different in temperature anyway.

 

[Techhog]

Reseat the block? Make sure you didn't leave plastic on?

 

[Silverforce11]

All radiators in your rig must be exhaust, never intake, because if you use it as an intake, you are essentially dumping all that heat in your case and defeat the advantage of water cooling.

So do that first, then ask yourself, after all the rads are exhaust, is there enough FRESH cool intake? I mean this as in an intake that isn't sucking in and recycling warm exhaust air (I've seen people do this, its weird).

If you don't have enough intake to keep up with the exhaust and the case is sealed, the exhaust drops in efficiency, especially the lower CFM/pressure exhaust is barely functional due to negative pressure and competing against other high pressure/CFM exhaust.

Looking at your case, does it have a bottom intake? It doesn't have a side panel intake either. So you pretty much have very little intake potential. New case or mod the side panel (cut out an area for a 120mm fan mount, on top of the GPUs). If there's room for a bottom 120mm intake pushing in fresh cold air up, then do that.

Your VRMs should never be that hot with such a setup, it definitely means your ambient temps are ridiculously high.

 

[Silverforce11]

Agree with heat rising.

Both G10's rad should be setup as intakes at the front of the case.

Exhaust should be top and back.

But i'm wondering if he should focus on once gpu at a time once he has the setup optimal then move on to the second one.

You do not ever want G10 rads to be intake, its dumping up to 600W into the case and completely negate the advantage of water cooling. You may as well get 2 open air cards and CF them.

The advantage of using AIO on GPUs is that if they are exhaust, they dump all that heat out, as well as functioning as an exhaust for the rest of the ambient air.. but you need a good intake source to keep them fed.

Actually I'm certain why OP's VRM temps are that high, because the front panel radiators are blowing 600W of heat on top of the VRM area/fan. NOT GOOD.

 

[SniperWulf]

No, I don't think it will make a huge different in temperature anyway.

Give it a shot, I think you'd be surprised. If not, eh... its just 9 screws

 

[anetaxll]

All radiators in your rig must be exhaust, never intake, because if you use it as an intake, you are essentially dumping all that heat in your case and defeat the advantage of water cooling.

So do that first, then ask yourself, after all the rads are exhaust, is there enough FRESH cool intake? I mean this as in an intake that isn't sucking in and recycling warm exhaust air (I've seen people do this, its weird).

If you don't have enough intake to keep up with the exhaust and the case is sealed, the exhaust drops in efficiency, especially the lower CFM/pressure exhaust is barely functional due to negative pressure and competing against other high pressure/CFM exhaust.

Looking at your case, does it have a bottom intake? It doesn't have a side panel intake either. So you pretty much have very little intake potential. New case or mod the side panel (cut out an area for a 120mm fan mount, on top of the GPUs). If there's room for a bottom 120mm intake pushing in fresh cold air up, then do that.

Your VRMs should never be that hot with such a setup, it definitely means your ambient temps are ridiculously high.

Thanks, I've tried every possible way, I can't get temp undercontrol when I closed case. The problem is the INTAKE this case really struggles to get air into the case, there is no way this can improve either apart from opening the case entirely.

 

[Attic]

Thanks, I've tried every possible way, I can't get temp undercontrol when I closed case. The problem is the INTAKE this case really struggles to get air into the case, there is no way this can improve either apart from opening the case entirely.

Go CPU air cooler and place G10 rads at (1) Rear and (1) Top of case. Or both at top of case with rear 1x120 pulling in air to cool those two rads.

With G10 rads, do you have the rads sandwhiched by 2x120mm? One push, one pull?, Can you do that?

The front of the case needs to be 3x120mm intake, preferably with no rads there.

Let me look for review that had similar situation as you but was running effectively 4x290x...


http://www.youtube.com/watch?v=LPZe244Ufv0

That setup kinda blew my mind, but I think you've mimicked it somewhat in your setup and just not seeing good results.

To me your case looks like it restricts front intake air flow, which could be a main source of problem.


VRM over 105c is big problem IMO, they are desgined to run up to 125c AFAIK but bleh too hot.


Bigger case, and more importantly the right one, will make life easier and keep aesthetics nice, but you can make your setup work in that case I think with som more tinkering.

 

[Silverforce11]

Thanks, I've tried every possible way, I can't get temp undercontrol when I closed case. The problem is the INTAKE this case really struggles to get air into the case, there is no way this can improve either apart from opening the case entirely.

If I were you, I get a drill out and drill lots of holes (or a dremel and cut out) on the side panel for a 120mm side intake fan, pushing in cool air on top of the GPUs. Have all the radiators as exhaust. That would solve your problem.

Look in my sig, my rig only have side and bottom 120mm fans as intake and its enough to keep everything nice and cool even with mining loads.

 

[jcardoso]

I had the same problem after installing G10 Kraken in my R9 290. When playing BF4 the temperature increase over 90 degrees celsius. I tried to change the radiator cooler positioning and nothing worked. I decided to check the contact of the watercooler in gpu, then I realized there was a millimeter gap between the pump copper plate and the GPU. Readjusted the pump screws so that there is full contact between the pump and GPU without any gap. When I turn on the PC the temperature was in 33 degrees celsius and when I play BF4 the temperature did not exceed 63 degrees celsius.
I hope this can help others as well.

 

[gradoman]

I had both of mine set as intake at the front of an ABS Canyon 595. With the front on, temps were ~80C. Front off produced far better results ~70C. Being able to mount them in the top as exhaust would probably be best as long as they're not getting the CPU cooler's exhaust, but you need openings to have the air exhaust or intake and your case isn't exactly airy.