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295X2 vs 290X heat dump level within case?

Legend

Legend

Legend

Soldato
Joined
31 Dec 2006
Posts
7,224
I'm trying to find out what the stats are on the amount of heat released in to the case from these cards, and the resulting temp rise. The OC3D review of the 295X2 said CPU temps rose 10 degrees above what they would be without the card in there (due to air hot air being dumped in to the case via the intake fan/rad setup). Are we talking similar increase for a 290X, and then even MORE if you have Crossfire? Given I have an H440 case, this is of considerable concern to me, although I do have some decent fans fitted to the case that keep things cool as they are. I am worried what kind of temp rises I'd see with either of these cards though, as the 970 Reference I have at present poses no such problems of course.
 
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Legend said:
I'm trying to find out what the stats are on the amount of released in to the case from these cards, and the resulting temp rise. The OC3D review of the 295X2 said CPU temps rose 10 degrees above what they would be without the card in there (due to air hot air being dumped in to the case via the intake fan/rad setup). Are we talking similar increase for a 290X, and then even MORE if you have Crossfire? Given I have an H440 case, this is of considerable concern to me, although I do have some decent fans fitted to the case that keep things cool as they are. I am worried what kind of temp rises I'd see with either of these cards though, as the 970 Reference I have at present poses no such problems of course.
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If you have the rad mount at the rear or top rear, it will exhaust the heat to outside the case directly. However it's not ideal if you were using a tower air CPU cooler, as it would mean the rad for the 295x2 fan intake would be from the wasted heat of the CPU cooler.

Ideally, the 295x2 would be best used alongside a system with AIO cooler on the CPU as well, that way both can exhaust heat directly out of the case (the 440 for example one rad mount at the rear, one mount at top-middle), and in the main chamber you'd only have cool air from front intake feed the fan intake of the two rads.
 
I have an AIO (a Nepton 240M up top), but that's set as intake on my case with the front also intake and a rear 140mm as exhaust. I suppose I could change the top to exhaust though, and I think there would be room for both of these at the top of my case. I think.

The OC3D review threw me, because I thought it was exhaust also, but they have it bringing in cold air from the outside... which also kind of made sense for the purpose of keeping the GPU cool, but at the expense of dumping hot air inside the case.
 
It generates too much heat when both GPU's are in use IMO, I wouldn't be dumping that in to the case.

Both GPU cores put out (up to) 75C and the memory VRAM will also generate heat.

Maybe they received one for review that had the fan mounted the wrong way in the manufacturing process?
 
OK, makes sense. So, to clarify, having this as an exhaust will still keep my case internals cool, vs 290X Crossfire where I'd be dumping MAHOOSIVE amounts of heat in there, essentially turning my case in to an oven? No contest in that case I'm assuming?
 
Legend said:
OK, makes sense. So, to clarify, having this as an exhaust will still keep my case internals cool, vs 290X Crossfire where I'd be dumping MAHOOSIVE amounts of heat in there, essentially turning my case in to an oven? No contest in that case I'm assuming?
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Crossfiring a pair of custom cooler 290x would not be a good idea. It'd actually be better for stick with the reference blower cooler if for crossfire the 290x.

Lots of people been trashing how crap the reference 290/290x cooler is...actually it is not! It actually does a very good job at exhausting the heat out the rear of the card. It's just that with that amount of waste heat, the fan would have to be spun at high rpm to keep the temp under control that's all. Personally I would the fan at 50-55% fanspeed was still quite acceptable, as I don't play my games on mute :p

Matt had 4 reference 290x in crossfire :p
http://forums.overclockers.co.uk/showthread.php?t=18652824
 
I have heard the reference coolers aren't great, in comparison to the Nvidia ones anyway. They do look a bit shoddy also I must admit, but I'm sure they're not ALL that bad. It would seem though that the 295X2 is the better of two options here, with it having the built in AIO.
 
Legend said:
I have heard the reference coolers aren't great, in comparison to the Nvidia ones anyway. They do look a bit shoddy also I must admit, but I'm sure they're not ALL that bad.
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Yea but Nvidia charged £30 price premium for their "Titan cooler"...they were more expensive than the custom cooled cards :p

Also the new 980 with what looks like a Titan cooler, Nvidia quietly removed the removed the vapour chamber, and according to Kaap his 4 GTX980 in SLI were barely cooler than his 4 290x in Crossfire...:eek:
 
295X2 is definitely a much better choice over 2 290X's. Your internal temps will be much lower.
 
Loque said:
295X2 is definitely a much better choice over 2 290X's. Your internal temps will be much lower.
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Yes, it just means taking a hit on the VRAM. I do like the idea of x2 8GB cards and the future proofing that will bring. But it would mean a new case for sure.
 
Legend said:
Yes, it just means taking a hit on the VRAM. I do like the idea of x2 8GB cards and the future proofing that will bring. But it would mean a new case for sure.
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I've decided that dropping a couple of settings at 4k is more than worth the extra ram, and the 295x2 is a damn cool card :cool:

Thinking of another ;) :D
 
My crossfired 290Xs (set to 'uber') I have hooked up to AIO intakes and a PCI exhaust fan just below the top card. Case temps stay around 35C.

I'm getting another PCI fan for the 2nd card.

This in an H440.
 
Bonjour said:
My crossfired 290Xs (set to 'uber') I have hooked up to AIO intakes and a PCI exhaust fan just below the top card. Case temps stay around 35C.

I'm getting another PCI fan for the 2nd card.

This in an H440.
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You have the reference card with cooler removed and AIO fitted? Is that G10 or something similar?
 
A pair of reference 290Xs with HG10 adapters and Corsair AIOs.

Initially there was a real pocket of hot air forming around the GPUs. I toyed with the idea of drilling an 80mm exhaust in the window but instead opted for the PCI exhaust, which works brilliantly.
 
Bonjour said:
A pair of reference 290Xs with HG10 adapters and Corsair AIOs.

Initially there was a real pocket of hot air forming around the GPUs. I toyed with the idea of drilling an 80mm exhaust in the window but instead opted for the PCI exhaust, which works brilliantly.
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Do you have any pics of your setup? What case do you have and where do you have the AIOs mounted? Sounds impressive.
 
I recently posted some pictures in a watercooling thread, as I've just fitted a Kelvin S36 in the top. I'll fish them out in a minute. Cables still need tidying.

The AIOs are mounted in the front. Still enough space to retain two of the hard drive mounts.

Edit: As an H440 owner, you might be interested in the Kelvin. It's almost like it's made for the case. Here's a link to the thread - http://forums.overclockers.co.uk/showthread.php?t=18648027

Worthwhile to add.. without the PCI exhaust it must have been getting pretty hot in the corner by the GPUs as an SSD I had mounted at the bottom cooked. Had exactly the same model SSD fail in a laptop, so they must have been sensitive to heat.
 
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