I'd almost be willing to bet a testicle you'd be able to drop voltage a fair bit on stock clocks.
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** Prolimatech MK-26 Multi VGA Cooler - R9 280/290/290X Compatible
- Thread starter rjk
- Start date
I'd almost be willing to bet a testicle you'd be able to drop voltage a fair bit on stock clocks.
I shall check tomorrow if its possible to under-volt and if so by how much.
If it is I shall try 1.1v and see how things go.
I shall check tomorrow if its possible to under-volt and if so by how much.
If it is I shall try 1.1v and see how things go.
Can i retract my previous statement? I'm not that confident.
I reckon 1.2v-1.225v should be ok. 1.1v sounds a bit low though for low asic.
Soldato
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Between 1112 and 1174mV depending on the vendor and BIOS.
Caporegime
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There have been some significant changes to the core and it's quite possible they've made some bigger changes, this can often mean transistors designed for different speeds, voltages, clock speeds, so too early to compare.
My non Ghz 7970 stock voltage under load is 1.13v, that's for 925mhz as well, it very happily does 1Ghz clocks in every game under the sun at 0.98v. I wouldn't be too surprised if it managed to run at 1.1v, but I wouldn't bank on it either. Also likely to be some variation in which can run lower voltage and which can't. But AMD really have for some years now almost always gone way overboard with voltage.
They're probably better off throwing away a few cores off a wafer that actually need that voltage and setting the general voltage as lower because it would improve TDP/temp/noise.
My non Ghz 7970 stock voltage under load is 1.13v, that's for 925mhz as well, it very happily does 1Ghz clocks in every game under the sun at 0.98v. I wouldn't be too surprised if it managed to run at 1.1v, but I wouldn't bank on it either. Also likely to be some variation in which can run lower voltage and which can't. But AMD really have for some years now almost always gone way overboard with voltage.
They're probably better off throwing away a few cores off a wafer that actually need that voltage and setting the general voltage as lower because it would improve TDP/temp/noise.
Could you take a few pics of the stock heatsink detached and show a pic of all the heatsinks attached(before the main cooler).
I remember issues with 7970(or maybe 6970? it seems ages ago I just can't remember how long ago) heatsinks, the AC ones IIRC that people were using and didn't realise there was an extra chip that needed cooling and a few cards died. From the pics I saw a while ago of a 290x it looked like there was one extra chip that needed cooling or at least had some frag tape on, but sometimes it's there as an insulator rather than cooling.
AFAIK prolimatech aren't officially stating support for the 290-x on the cooler?
EDIT:- shame, they've done away with the fan bracket and gone with the extra weight all attached to the heatsink/card instead. While it's easier, the fan bracket was a much "safer" way to go about it. For such an expensive cooler it would be nice to have the clips and the bracket so you can choose.
That's why its a little more expensive. Prolimatech supply some small heatsinks that fit in the section of the card that you are talking about. I have pics on my phone and will upload them tomorrow for you.
The alpenfohen ram sinks are much much better than the stock prolimatech so we use them.
The pics will explain it better than I can.
Caporegime
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Thanks, I haven't bought an aftermarket cooler since the last prolimatech I got. I can't remember if I had it on my 4870, deffo had it on my 5850 where it was awesome, dropped 40C off load temps in silence and let me overclock the balls off it. Transferred it to my 6970 which it didn't seem to work well on for some reason, worse contact due to diff core height, it didn't seem to cope with the heat anywhere near as well. But at least early revs of that sink was lacking a good vrm cooler, and lacking little heatsinks for various extra bits. I think it was the 6970 that had an extra little chip that caught people out with the AC coolers when a few people killed their cards.
I think I remember buying various accessory packs for various heatsinks and then mixed and match to get the best fit/biggest sinks where ever they would fit. THough I think since then because of all these extra chips most heatsinks do appear to come with a much better range of stuff as standard to help future compatibility.
Honestly I doubt I'll buy a 290x even though they sound fairly damn good. I generally don't think there will be many hardcore graphics card killing games out in the next year by which time a even further improved architecture and 20nm card will be out. a 290 in a few months if pricing comes down below £300 might just tempt me into one though.
I think I remember buying various accessory packs for various heatsinks and then mixed and match to get the best fit/biggest sinks where ever they would fit. THough I think since then because of all these extra chips most heatsinks do appear to come with a much better range of stuff as standard to help future compatibility.
Honestly I doubt I'll buy a 290x even though they sound fairly damn good. I generally don't think there will be many hardcore graphics card killing games out in the next year by which time a even further improved architecture and 20nm card will be out. a 290 in a few months if pricing comes down below £300 might just tempt me into one though.
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So, with MK-26 when adding the fans you just plug them into the ports on the PCB and you're able to control them properly in MSI AB etc. right? Never took a GPU apart yet so just checking.
God damn it these new releases, now I'm torn between a 780 and R290X, I know that X beats it in nearly every part, but the reference coolers is just....well....no......Thinking about grabbing the OcUK tech lab one, but ain't sure yet....
Anyone know how long it might take for the aftermarket coolers to appear? I heard some weird stuff that it might be few weeks, other say that AMD won't allow it for a couple of months....so which ones true?
God damn it these new releases, now I'm torn between a 780 and R290X, I know that X beats it in nearly every part, but the reference coolers is just....well....no......Thinking about grabbing the OcUK tech lab one, but ain't sure yet....
Anyone know how long it might take for the aftermarket coolers to appear? I heard some weird stuff that it might be few weeks, other say that AMD won't allow it for a couple of months....so which ones true?
you can, but the fans need to be PWM [4pin]
Soldato
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Right then
Some more information here to answer drunkenmasters questions and hopefully explain a little more about the setup on this card.
this is the board layout and shows where the heatsinks go and what heatsink from which kit we are using.
this is the configuration used on the retention plate:
we use the smaller rubber standoff and the thicker plastic washers to ensure a secure mount. also use the silver screws not the black nickel ones as they are for GTX680s.
this picture shows the rubber underneath the backplate and the mounting method as well as the half height heatsinks next to the heatpipes from the cooler.
finally, this image shows how thick the card is with the cooler and a 25mm thick fan installed. it takes up 4 PCIE slots
Some more information here to answer drunkenmasters questions and hopefully explain a little more about the setup on this card.
this is the board layout and shows where the heatsinks go and what heatsink from which kit we are using.
this is the configuration used on the retention plate:
we use the smaller rubber standoff and the thicker plastic washers to ensure a secure mount. also use the silver screws not the black nickel ones as they are for GTX680s.
this picture shows the rubber underneath the backplate and the mounting method as well as the half height heatsinks next to the heatpipes from the cooler.
finally, this image shows how thick the card is with the cooler and a 25mm thick fan installed. it takes up 4 PCIE slots
Does this mean that you're using 'The Beast' on dem VRM's?
i tired initially but it doesn't fit correctly.
It's good to see how you did it, thanks! With those half height heatsinks, did you cut the tops off?
Soldato
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Ah well, at least you tried... I thought that it'd have the clearance.He didn't cut them. They come in the Alpenfohn kit
Check out the pic in my spoiler.it has the clearance, but the screw holes on the 290 are wider than the screw holes on the 7970 so it doesnt fit.
i reckon if you drilled it and tapped it you could potentially make it fit yourself as it is a fairly hench heatsink.
He didn't cut them. They come in the Alpenfohn kit
confirmed, they are standard in the Alpenfohn kit.