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[Reddit] RX 480 fails PCI-E specification - Page 78  

post #771 of 1129
Quote:
Originally Posted by Themisseble View Post

Check this out. According to GPU-Z his GPU rusn at 1.05V (instead 1.15V or higher) and it use around 105W (max)?! What is happening?! AMD went for quantity?

Or maybe wrong profiles?!

Link??
 
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post #772 of 1129
Quote:
Originally Posted by Hardware Hoshi View Post

Quote:
Originally Posted by looniam View Post

NO it does not!

if you have a 150 watt card then it would have to use BOTH (spec'd) 75 watt sources. and it IS a pci-sig requirement to keep those sources (connector/slot) separate; why the two vrm banks aren't tied together.

If your graphics card need around 150W, you would normally either use a 2x6pin or 1x8pin Power. With this configuration, your hardware could never exceed the 75W limit of the the PCI-SLOT. The extra power connector usually supply the GPU-core, while the PCI-Express bus handles the rest like the built on RAM and coolers.

Since RX480 chip is rated for 110W TDP, this would be best solved with one 8pin + PCIE-SLOT. There would be even room for overclocking, because the 150W of the 8pin can be violated without problems, as the 295x2 shows already.

a 6 pin PCI-E power connection can also "be violated" w/o any problems. its not like this is the first card that was designed with power connectors which cut it close to it's board power; enter in the gtx960 with 130 watt TDP and single six pin just recently or the much earlier 750ti with 60 watt TDP but no six pin. those are two examples off the top of my head of "cutting it close" with reference power design.

sure, i'll agree that more would have been better, esp for OCing. but reference cards aren't designed to OC that's what AIB cards are for.
Quote:
Originally Posted by Themisseble View Post

Check this out. According to GPU-Z his GPU rusn at 1.05V (instead 1.15V or higher) and it use around 105W (max)?! What is happening?! AMD went for quantity?

Or maybe wrong profiles?!

i wasn't aware gpu-z had been updated for polaris.
Edited by looniam - 7/3/16 at 2:42pm
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post #773 of 1129
Are you talking about me? tongue.gifbiggrin.gif

Of course mine is 1.025V for stock clock... so must not be.

Post in Thread in AMD/ATI Forum

Another Post in AMD/ATI Forums w/ Memory Changes

Edit: He's talk about this thread and post in AMD/ATI under Furmark. The guy is using dynamic voltages, not manual control.

Edit 2: You can also see it's set for current reading, not the max detected and there's some small peaks, especially back in time that shows a touch higher then his current reading.
Edited by BulletBait - 7/3/16 at 3:31pm
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post #774 of 1129
Quote:
Originally Posted by looniam View Post


sure, i'll agree that more would have been better, esp for OCing. but reference cards aren't designed to OC that's what AIB cards are for.

This.
post #775 of 1129
Would a powered pci cable help with this issue, or help with overclocking?

 
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post #776 of 1129
Quote:
Originally Posted by sydefekt View Post

Would a powered pci cable help with this issue, or help with overclocking?


Not sure about overclocking because MAX you can pull is 225W. 75W+75W = 150W *150% = 225W. It will help the PEG from burning. Would be nice if they do a test.
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post #777 of 1129
Is it just me who finds it strange that a site full of ppl with voltages n freq cranked up everywhere is freaking out that motherboards are going to die. My not top of the line mobo/processor/gpu has voltage and freq jacked up as far as it can stable for the last... 4-5 years straight. Longest i have ever went on a system.
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post #778 of 1129
Quote:
Originally Posted by motoray View Post

Is it just me who finds it strange that a site full of ppl with voltages n freq cranked up everywhere is freaking out that motherboards are going to die. My not top of the line mobo/processor/gpu has voltage and freq jacked up as far as it can stable for the last... 4-5 years straight. Longest i have ever went on a system.

That's a great point. Here we have a board full of peeps who regularly go far beyond the safety specs when running their hardware (CPU's, video cards, memory, you name it) all freaking the hell out that the 480 exceeds spec on the PCIE slot by an entire 5%! Oh the humanity!!!! rolleyes.gif I know I have personally run my Titans (already very power hungry cards) at up to 1.45V on countless occasions and have never really worried much about damaging anything to be honest. For reference, I bought these cards in February of 2013! I'm sorry but 5% overdraw of the slot is NOT going to damage anything. Now when you get into the issues of overvolting and OCing, well then I guess we can have a different discussion, but as always OCing (and especially overvolting) has always been subject to risk and anybody doing so should be fully prepared to accept the consequences of possible hardware failure anyway (otherwise they should be running at stock).

There's no question that this is a goof for AMD and is the LAST thing they probably want to be dealing with just a day after launching their all important first 14nm cards. There's no excuse that something like this wasn't caught in pre-production testing, I absolutely agree with the Nvidia fanboys on that point (of course they really only care about it because its something they can drag AMD through the mud over). That being said, there is every reason to expect that the fix will be a simple BIOS/driver edit and that this will be implemented very quickly (look how fast they dealt with the Crimson fan curve issue). I predict that by this time next week or slightly beyond this issue will be a distant memory (except with the fanboys who I suspect will never let this go as long as 480's exist). Even still, I would almost guarantee that the issue as it exists will not effect any end users anyway, at least running at stock (again, OCing is subject to the same expectation of possible failure as with ANY card in the history of ever). That 5% wattage overdraw simply will not damage PCIE slots, I don't care what any disreputable sources from Reddit tell you.

Left unsaid is that none of the AIB cards will even have this issue to begin with and they will likely end up being the most popular 480's sold anyway. Just the same old fear mongering and grasping at straws that the fanboys do every single time AMD releases a new product, and it in no way whatsoever disqualifies the entire 480 lineup from being the impressive performance and value standout that it is. Its disappointing that this wasn't caught by them before release but still largely irrelevant...
post #779 of 1129
There's a difference between end users pushing a component past it's specifications and a manufacturer releasing a component that doesn't comply with specifications..
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post #780 of 1129
Quote:
Originally Posted by Remij View Post

There's a difference between end users pushing a component past it's specifications and a manufacturer releasing a component that doesn't comply with specifications..

Did you even read my whole post? I'm not questioning that the card is out of spec and that AMD goofed up here. What I AM saying is that the 5% that it runs out of spec is absolutely not going to hurt anything. With OC's you are always subject to possible failure but at stock we are talking about 4W. That's not going to be an issue for anybody.
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