Can you provide a source that Polaris has had it stripped? Anandtech states Fiji still has FP64, although only a reduced, amount; while still having full FP32 performance.
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AMD RX 480 Fails PCI-E Specification
- Thread starter tripkebab
- Start date
Can you provide a source that Polaris has had it stripped? Anandtech states Fiji still has FP64, although only a reduced, amount; while still having full FP32 performance.
Why should I make a legal claim, got nothing to do with me. I wouldn't go anywhere near an RX480
But you're clear that you reckon its recall worthy. A huge cost that no one volunteers for unless forced by evidence and law.
AMD must have sent out hundreds of thousands of cards, if they are not demonstrably causing a problem then all AMD has to do is what it has done.
*internet drama over power tolerances*
AMD sends out driver to move a couple of watts.
Now people have to bail on the slot power bandwagon because it's stone dead.
Now the power is on the 6pin/8pin which again is hiding in the power tolerances but now it's harder to complain about.
Unless someone proves a fault and makes a claim which wins AMD has no reason to recall anything.
But if people cannot prove a fault then really what are they demanding.
PcPer had this to say about it. More tests still to come I hope.
Guru3D not noticing a performance drop either.
http://www.guru3d.com/news-story/radeon-rx-480-performance-benchmarks-with-16-7-1-driver.html
Soldato
- Joined
- 28 May 2007
- Posts
- 10,147
+1 they don't need this kind of publicity at launch. They need to be faultless and keep scoring own goals now and then.
but just think..if people and reviewers on youtube hadn't spoken out about the pcie current draw we probably wouldn't have these improved drivers..its those people that need a thankyou..not amd,they put themselves in that situation.
it still shouldn't use that much power the card eats 165watt, i think they have a problem somewhere, the graph shows the chip using 110 watt, that leaves 55watt for memory module which is a lot, itshould be under 30watt, they still have 25-30watt lost somewhere.
does anyone have a 1070 review with broken down results for chip and memory power usage ?
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Man of Honour
It is pulling 93W through a setup that has a specified maximum of 75W. That is an issue. How the connector on the card is wired is irrelevant to that because it's only one part of the chain which is out of spec.
You can ignore specs if you like. You can bet your kit on all the manufacturers of all the components in the chain (PSU, cabling, connectors, wiring on boards) making their components rated for well over spec. You'll probably win that bet because they probably will do that.
But to claim that a component drawing 25% more power through a chain of components than any of those components is required to cope with and a major company ignoring specs in order to lie for marketing purposes are not issues at all is simply wrong.
Caporegime
When they said overclockers dream, did they mean underclockers?
A 6-pin pci-e connector can handle much more than the 75W pcie spec.
Each of the 12V 18awg yellow and black wires in the pcie connector can handle over 4.15A. This means that with 3 x12V Yellow wires you can draw 150W (12.5A) of power over a 6-pin connector. The connector itself can handle over 18A of current.
A quick calculation for you:
Power = VxI
So for each wire we get :- 12V x 4.15A = 49.8W
For a pcie 6pin : 3x 49.8W = 149.8W
There is plenty of headroom on the 6-pin connector as it stands. AMD has over engineered the connector circuit anyway by actually using the sense pin as a ground so it can handle more than 150W. The 480 only uses 90W max on the pcie 6-pin but will obviously use more when overclocked like any other gpu on earth
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A 6-pin pci-e connector can handle much more than the 75W pcie spec.
Each of the 12V 18awg yellow and black wires in the pcie connector can handle over 4.15A. This means that with 3 x12V Yellow wires you can draw 150W (12.5A) of power over a 6-pin connector. The connector itself can handle over 18A of current.
A quick calculation for you:
Power = VxI
So for each wire we get :- 12V x 4.15A = 49.8W
For a pcie 6pin : 3x 49.8W = 149.8W
There is plenty of headroom on the 6-pin connector as it stands. AMD has over engineered the connector circuit anyway by actually using the sense pin as a ground so it can handle more than 150W anyway. The 480 only uses 90W max on the pcie 6-pin but will obviously use more when overclocked like any other gpu on earth
Yes, but it is still technically out of "spec". I am not saying that I agree that it matters ( i don't really) but it is still technically outside PCIe specifcations.
Caporegime
I didn't realise this!!
since it did pass pci-e spec the thread title is still wrong.
A 6-pin pci-e connector can handle much more than the 75W pcie spec.
Each of the 12V 18awg yellow and black wires in the pcie connector can handle over 4.15A. This means that with 3 x12V Yellow wires you can draw 150W (12.5A) of power over a 6-pin connector. The connector itself can handle over 18A of current.
A quick calculation for you:
Power = VxI
So for each wire we get :- 12V x 4.15A = 49.8W
For a pcie 6pin : 3x 49.8W = 149.8W
There is plenty of headroom on the 6-pin connector as it stands. AMD has over engineered the connector circuit anyway by actually using the sense pin as a ground so it can handle more than 150W anyway. The 480 only uses 90W max on the pcie 6-pin but will obviously use more when overclocked like any other gpu on earth
IIRC as far as the wiring goes you could theoretically pull something like 72 watt down each one without any considerations and a fair bit more with temperature and resistance, etc. properly accommodated for.
The PSU itself could be another matter but if ~100watt total over the 6 pin is a problem for you the GPU is one of the least of your worries.
While a card may of been sent for testing and passed, the reference ones released to the public didn't meet spec so the title isn't wrong.
Not saying its a issue however
When you are overclocking you are always going over the spec anyway. People never had an issue before even when extreme overclocking and overvolting
Some good info here:
http://www.tomshardware.co.uk/power-supply-specifications-atx-reference,review-32338-12.html%22]http://www.tomshardware.co.uk/power-supply-specifications-atx-reference,review-32338-12.html
Molex datasheet for standard MINI FIT JR pcie connectors:
http://www.molex.com/pdm_docs/ps/PS-5556-001.pdf
The contacts on the pcie connector can handle over 8A per pin so the quality of the wires and the psu 12V is the only limiting factor. You can probably draw much more than 150W safely.
The pcie spec is lower but the actual physical wires and connectors can handle a lot more and that is all that matters.
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When you are overclocking you are always going over the spec anyway. People never had a issue before
Some good info here:
http://www.tomshardware.co.uk/power-supply-specifications-atx-reference,review-32338-12.html%22]http://www.tomshardware.co.uk/power-supply-specifications-atx-reference,review-32338-12.html
Molex datasheet for standard MINI FIT JR pcie connectors:
http://www.molex.com/pdm_docs/ps/PS-5556-001.pdf
The contacts on the pcie connector can handle over 8A per pin so the quality of the wires and the psu 12V is the only limiting factor. You can probably draw much more than 150W safely.
The pcie spec is lower but the actual physical wires and connectors can handle a lot more and that is all that matters. When you are overclocking you are always going over the spec anyway.
I know! Im not saying it does matter (in the post you quoted as well!) but it technically does go over the standardised specs.
Even the 6 pin can probably carry 150w on it's own like an 8 pin but i believe the two extra ground wires on the 8 pin are to help with the current at the higher wattage.