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[Reddit] RX 480 fails PCI-E specification - Page 55  

post #541 of 1129
Seriously? Another botched AMD product launch? This was supposed to be the card that would rein in Pascal's prices. frown.gif
post #542 of 1129
i'm spamming:

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post #543 of 1129
Quote:
Originally Posted by brucethemoose View Post

This smells like a bad design decision to me.


Cheap 6-pin power input, cheap heatsink... maybe someone at AMD was trying to cut manufacturing costs, but cut out a little too much. Or maybe it was a miscommunication, with the shipping cards using far more power than expected.

Maybe the review cards were funky. Maybe it was some of each.

_______________________________


Either way, a ton of 3rd party cards will ship with 8 pin connectors on custom PCBs anyway. Hell, it might be like the 6850, where we didn't see any reference cards/PCBs out in the wild.
It points to P10 chip under delivering. The heat sink size and 6 pin indicate they were expecting 120-130ish Watts usage with a clock around 1200-1300.
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post #544 of 1129
Quote:
Originally Posted by Vesku View Post


It points to P10 chip under delivering. The heat sink size and 6 pin indicate they were expecting 120-130ish Watts usage with a clock around 1200-1300.

 

That should have been caught during design.

post #545 of 1129
Please move this out of the rumor section. It has been confirmed by many. Someone already tried to start a thread about PCper's video but it got closed.
post #546 of 1129
Quote:
Originally Posted by Kinaesthetic View Post

That should have been caught during design.

Given some chips seem to be able to undervolt and perform as I stated it points to issues with the GF 14FF LPP process. Imo, AMD thought they would be closer to target with launch revision but obviously didn't work out. Time will tell, if it is process there should be an overall improvement in P10 chips within 6-12 months.
Edited by Vesku - 7/2/16 at 12:17am
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post #547 of 1129
Quote:
Originally Posted by ElCheapo View Post


960 Strix had a 6 pin connector, drew too much often like this. Reference 960 had a 6 pin connector, didn't. Other board partners had lower PCI-E slot draw with similar performance. Not sure why that's difficult to understand.

There's two problems- first is the PCI-E 6 pin connector's spec being out of line for the TDP that's exceeding spec- that's a separate problem from the PCI-E overdraw. The only mutual solution is lowering the power it can use. People keep citing adding a connector as if it'll fix the problem. It doesn't need a connector change- and it's entirely possible a connector change won't fix it.

Of course a connector change isn't going to fix the PCIE motherboard draw.
That requires a change in most likely, the design of the card.
I was just saying that if the card needed too much power which is why it also requires a lot of power from the PCIE slot, a move to less power to the PCIE slot and more through the 6 pin (or 8 pin if it requires too much), would have been better.
Slap a 8 pin instead and draw most of your power from it, should fix all of the cards power problems.

Also, talking about the strix version is completely irrelevant. It is not a reference card. A reference card usually takes less power than AIB cards. Some AIB 960s have 8 pin instead of 6 pin (like the evga ssc version).

The reference design of the 480 seems to be flawed if this is a true issue.
Talking about the 960 strix is like saying "well if he robbed a bank and wasn't caught, I'm allowed to do the same, because he got away with it". It is wrong. Just plain wrong.
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post #548 of 1129
We are talking about as immature a node as possible. The card released the day before yesterday yet people are expecting 4 year old 28nm type maturity. Luckily it's only a $200 card so even stock performance is far beyond anything else near this price range.
post #549 of 1129
Quote:
Originally Posted by Majin SSJ Eric View Post

We are talking about as immature a node as possible. The card released the day before yesterday yet people are expecting 4 year old 28nm type maturity. Luckily it's only a $200 card so even stock performance is far beyond anything else near this price range.

Nah, it is not about the node, just poorly designed ref card. When the market has enough of AIBs with 8 pins, they should just phase out reference versions. It is not worth all these controversies and dramas for $30-40 savings.
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post #550 of 1129
PCIe slot power transmission to card is only limited to 75w IF THE CARD HAS NO POWER CABLE ATTACHED. The slot lacks the superior ground necessary to provide a higher wattage.

Most cards on the market today pull up in the 80/90 range and it's well within spec if you have a PCIe power cable connected to the graphics card.

The addition of the power cable allows a much much higher power draw through the x16 slots. The x8 slots however are more heavily limited and while some cards CAN run in x4 slots, they often will refuse to.
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