And that is why we have watercooling.
[LH] HD5970 OC Problems.
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http://www.legionhardware.com/document.php?id=868&p=0
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A friendly warning to anyone itching to drop $600 on the 5970 when it becomes available again.
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In order to avoid cooking itself, the Radeon HD 5970 throttles both cores down, negating any positive performance impact the overclock is going to have. However rather than throttle the cores down just a little, or even to the default operating specification, it drops the frequency to just 550MHz, that’s a 24% under clock on each core. |
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Please note we are only using FurMark as a tool to show the overclocking problem that we encountered. However, the problem was first noticed when benchmarking the overclocked Radeon HD 5970 in long stressful benchmarks such as S.T.A.L.K.E.R Clear Sky. In such games the overclocked Radeon HD 5970 failed to provide strong performance gains and if we looped the tests several times the results often ended up being lower than before any overclocking took place and this was because the card would throttle down to 550MHz. AMD did make it clear that the Radeon HD 5970 does throttle down to avoid any damage when operating at high temperatures. However they also portrayed the Radeon HD 5970 as a stellar overclocker that could and would hit Radeon HD 5870 speeds. While this is true to a certain extent as the Radeon HD 5970 will reach Radeon HD 5870 frequencies, it will also throttle back after a few minutes in certain stressful games such as S.T.A.L.K.E.R. So this is not really a practical overclock then since the card will inevitably throttle back. While it won’t happen as fast as it did in Furmark it will happen and that is the point. The Radeon HD 5970 is still a great product and it is the world’s fastest single graphics card but it is not the overclocking behemoth that AMD made it out to be. At least not with the standard cooler which they say is rated up to 400w. |
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Exactly and aftermarket air cooling.
Originally Posted by XFreeRollerX And that is why we have watercooling. |
strap a fan to it and/or increase the stock fan speed
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They already maxed it out at 100%. Yes other cooling methods will allow you to overclock higher, thats a given with any card. This review/warning is simply calling BS on AMD's claims.
Originally Posted by T3h_Ch33z_Muncha strap a fan to it and/or increase the stock fan speed
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fine u oc it and have it blow up because its too hot
gg
Originally Posted by huntman21014 Haha so right! "Can you believe the GTX300 throttles when OC'ed?! They want you to spend more money just for cooling!!! Boycott/Hot/Overpriced!!!" |
gg
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because both of those GPU's are highly binned 5870's, and as such can clock as good and in most cases, better. They are underclocked from the factory.
Originally Posted by Swiftes Not to be a bore, but why you need to overclock this card anyway? It is like buying a Veyron, then have someone tune it for you... |
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They clearly stated the problem also occurred in STALKER, i even quoted it in the op.
Originally Posted by vicious_fishes CCC has always had a furmark protection setting built in. in fact i believe it might be part of the card bioses. furmark damages ati vrm's, hence why. this site is obviously n00b. |
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not really. this is more like setting the GPU's back to what they should be
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Originally Posted by WiR3D-kNiGhT sooo ? yeah it occured when OVERCLOCKING.... gg sorry but this is all fail |
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When AMD claimed it had "massive overclock headroom" and then wont even let it safely reach 5870 speeds, thats fail. They didnt say with optional three slot air coolers or water blocks either. If you havent noticed they had a litte advertisement chart showing a bar all the way up to 1GHz core clock while claiming the headroom.
http://www.overclock.net/hardware-ne...s-massive.html
Unfortunately i think 003 is right, if Nvidia released Fermi and it couldnt be overclocked much and then throttled down LOWER then its stock speeds OCN would have a hay day bashing it.
Originally Posted by WiR3D-kNiGhT sooo ? yeah it occured when OVERCLOCKING.... gg sorry but this is all fail |
http://www.overclock.net/hardware-ne...s-massive.html
Unfortunately i think 003 is right, if Nvidia released Fermi and it couldnt be overclocked much and then throttled down LOWER then its stock speeds OCN would have a hay day bashing it.
i think im gonna sig myself on that rant
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Did you bother reading?
"However, the problem was first noticed when benchmarking the overclocked Radeon HD 5970 in long stressful benchmarks such as S.T.A.L.K.E.R Clear Sky. In such games the overclocked Radeon HD 5970 failed to provide strong performance gains and if we looped the tests several times the results often ended up being lower than before any overclocking took place and this was because the card would throttle down to 550MHz."
Originally Posted by vicious_fishes CCC has always had a furmark protection setting built in. in fact i believe it might be part of the card bioses. furmark damages ati vrm's, hence why. this site is obviously n00b. |
"However, the problem was first noticed when benchmarking the overclocked Radeon HD 5970 in long stressful benchmarks such as S.T.A.L.K.E.R Clear Sky. In such games the overclocked Radeon HD 5970 failed to provide strong performance gains and if we looped the tests several times the results often ended up being lower than before any overclocking took place and this was because the card would throttle down to 550MHz."
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