Wednesday, August 17th 2016
High PCIe Slot Power Draw Costs RX 480 PCI-SIG Integrator Listing
AMD's design of the Radeon RX 480 graphics card, which draws over 75W of power from the PCI-Express x16 slot, has cost it a product listing on the PCI-SIG Integrators List. The list is compiled for hardware devices implementing the various PCI-Express specifications to the letter. The RX 480 is off-spec, in that it overdraws power from the slot, as the card needs more power than what the slot and the 6-pin PCIe power connector can provide while staying within specs. According to these specs, the slot can provide up to 75W of power, and the 6-pin connector another 75W. The RX 480 was tested to draw more than this 150W power budget.
What this means for AMD is that it cannot display the PCI-Express certification logo on the product or its marketing materials. This, however, may not affect AMD's add-in board (AIB) partners that are PCI-SIG members in their own right, and make graphics cards with their own sub-vendor IDs, provided their power-supply designs comply with PCIe specs. Custom-design cards with an 8-pin PCIe power connector, instead of 6-pin, may qualify as the combination of the 8-pin connector and the slot yields a power budget of 225W. AMD released a software fix to the issue of the cards overdrawing power from the slot, with the Radeon Software Crimson Edition 16.7.1 Beta.
Source:
Heise.de
What this means for AMD is that it cannot display the PCI-Express certification logo on the product or its marketing materials. This, however, may not affect AMD's add-in board (AIB) partners that are PCI-SIG members in their own right, and make graphics cards with their own sub-vendor IDs, provided their power-supply designs comply with PCIe specs. Custom-design cards with an 8-pin PCIe power connector, instead of 6-pin, may qualify as the combination of the 8-pin connector and the slot yields a power budget of 225W. AMD released a software fix to the issue of the cards overdrawing power from the slot, with the Radeon Software Crimson Edition 16.7.1 Beta.
63 Comments on High PCIe Slot Power Draw Costs RX 480 PCI-SIG Integrator Listing
gee i didnt know JEDEC makes a compliance list or that segmented memory speed is anything close to electricity & failures or even fires
obviously we dont care about the sticker, what about someone with a lower end mobo? what about corporate IT support? what about an OEM? how about thinking of others for once
which reminds me, never called out the hysterical mob in the call of duty article months ago, sick of such people infesting what should be an intelligent empathetic enthusiast forum
Nice reply tho I score you 3.5/4
but i'm cereal, dough
It is only armchair youtube viewers who think that some site's video about their method of hooking up a random and un-scientific amount of filtering indicates something about anything meaningful. If anything, they should have used Toms' graph of realtime data and applied RMS to Toms' realtime data to arrive at pretty close to the correct values instead of throwing some random coils into their experiment and skewing the data by an unknown and arbitrary amount without paying any attention to the lowpass or highpass filtering implications and inaccuracies introduced into their data due to an input signal of unknown frequency and randomness and then trying to explain it in a way which sounded enlightened. Neither site got it quite right. But that is besides the point.
The point is that PCI-SIG used the industry standard RMS power when it developes and publishes its industry standard. Thus they do indeed level off the peaks into a more true indication of average power consumption and heat production over extended use and load and do indeed place less importance on any individual power spike. It is similar (in a way) to what PCper tried to do, but in a much more scientific and reproduceable way which does not change drastically depending on your power supply's output ripple frequency or your game's/application's load and computation distribution.
This stuff costs far too much for me to ignore ~any~ possible risks in it's power delivery system.