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AMD Radeon R9 295X2 to Get Promotional Price, Open to All
- Thread starter tommybhoy
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Soldato
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That's a bit of an oversight on AMD's part isn't it?
Surely all you need is 1 or 2 fan headers on the card that are accessible and an adaptor (if they choose to use the standard GPU fan header). Then have the fan(s) work like normal GPU fans.
It will be disappointing. Has anyone here got a 295x2 and if so have you gotten around this?
Soldato
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He's talking about the 7970 blocks.
Their 7990/295x2 blocks do have active VRM cooling, it's just that I found a big difference between cores compared to my EK or Aquacomputer blocks.
Not sure if they've made any significant changes for this model, but I don't think I'd go there again.
Send OcUK a webnote via the shop page if you don't fancy taking the chance..
Thank you, Gonna send a note now.
Would it be wise to grab one of these then?
http://www.overclockers.co.uk/showproduct.php?prodid=WC-178-AQ&groupid=962&catid=1520&subcat=2765
Soldato
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Yeah, here's a review: http://www.bit-tech.net/hardware/2014/08/06/water-cooling-the-amd-radeon-r9-295x2/1
They don't mention anything about individual core temps though. Still, I don't think you'd have any probs.
They don't mention anything about individual core temps though. Still, I don't think you'd have any probs.
Thank you very muchy, Sent a note. Hopefully get things all swapped over.
I wonder if that is need.
Do we know the statistics of the fans used on the 295X2?
Because simple replacement with Akasa Apache for example in Push-Pull, which are not only quiet at 100% speed, but provide a lot of H2O static pressure, might improve the stock solution.
Do we know the statistics of the fans used on the 295X2?
Because simple replacement with Akasa Apache for example in Push-Pull, which are not only quiet at 100% speed, but provide a lot of H2O static pressure, might improve the stock solution.
Soldato
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Fans can only do so much with a limited cooling solution.
I wouldn't advise apaches on a rad either, have 8 doing p/p on a 480 Sr-1 which is cooling my gpus, regularly approach 50c on the cards at stock, the fans simply aren't fast enough. Vipers on the other hand (faster akasa s-flow fans) do a good job but can be a bit noisy at full tilt. I believe the piranhas are the best of the bunch for akasa and rad cooling.
With the 295x rad I'd stump up on a pair of those 3000rpm noctuas and stick them on a controller...silly amounts of static pressure.
With the 295x rad I'd stump up on a pair of those 3000rpm noctuas and stick them on a controller...silly amounts of static pressure.
Soldato
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Might have some Vipers lying around, definitely have some Apaches lying around. Tempted to put a couple of GTs on it though.
my mates just brought Aquacomputer block will ask him for details on it when he gets his to post when installed.
Are you sure the issue is with he fans and not elsewhere? That sounds really odd as ~60CFM and ~5+ mm-H20 should be more than fine for a low FPI rad designed specifically for low speed fans. The SR1 was designed to be optimum with a single set of ~1300RPM fans, PP should get the most possible out of it, if your getting issues then perhaps you don't have enough rad space or flow rate /shrug.
Caporegime
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Far as I remember, it runs 25°C cooler than a 290x reference card under load.
It has a lower throttle temp though. Around 75 Degree compared to around 94 degrees for a normal R9 290X.
Just wondered about all the water cooling talk. I have used both AMD and Nvidia and love them both but just a bit worried as I have a Silver Arrow CPU Cooler near where I would mount the R9 295 radiator and worried about it throttling.
Just wondered about all the water cooling talk. I have used both AMD and Nvidia and love them both but just a bit worried as I have a Silver Arrow CPU Cooler near where I would mount the R9 295 radiator and worried about it throttling.
Caporegime
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Maybe that's what I was confusing it with then...
Why do they throttle the 295x2 at a dramatically lower temperature if they are the same chips?
Why do they throttle the 295x2 at a dramatically lower temperature if they are the same chips?
I read this from AnandTech Review
"It is however important to keep in mind that the 295X2 has a relatively low 75C temperature throttle. So although we’re not throttling under this test (sustaining 1018MHz throughout), we’re only 4C off from reaching that point. Measuring the 120mm fan on the CLLC finds that the fan is operating at its full speed, so the CLLC is operating very close to its own limits, too.
Finally this is why the leakage concept is so important here. At 71C AMD is undoubtedly leaking less power than the 290X CF is at 94C (how much is anyone’s guess at this point), which is part of the reason that the 295X2 is viable in the first place, and combined with the CLLC’s limits is why there is a need for a 75C throttle."
"It is however important to keep in mind that the 295X2 has a relatively low 75C temperature throttle. So although we’re not throttling under this test (sustaining 1018MHz throughout), we’re only 4C off from reaching that point. Measuring the 120mm fan on the CLLC finds that the fan is operating at its full speed, so the CLLC is operating very close to its own limits, too.
Finally this is why the leakage concept is so important here. At 71C AMD is undoubtedly leaking less power than the 290X CF is at 94C (how much is anyone’s guess at this point), which is part of the reason that the 295X2 is viable in the first place, and combined with the CLLC’s limits is why there is a need for a 75C throttle."
Perhaps, my next step was to ditch dual loop anyhow (4770k on another 480 is wasted) to free up more rad space.
I say its the rpm as on a previous loop, I had a pair of 7970's cooled by an Sr-1 360 + 240 with some 2000rpm golf fans, with those you could physically feel the heat being pushed out of the radiators, I don't feel that on the apaches, even when fluid temps exiting the radiator are 35c+ it's a cool gentle breeze, like the heat isn't being moved well.
Dual looped 480's is the smallest loop radiator wise I've ever done, so still have some room for education on fans
