Originally Posted by andydabeast
I am literally making my individually sleeved cables this weekend and have a RX 480 in the mail. Would it break everything, do nothing, or help if I made a 6pin with all 8 wires going into it? so-
8pin #4 -> pair with 6pin #5
8pin #8 -> pair with 6pin #6 (or #4)
Using 16 gauge wire fyi
not at home atm but if I remember correctly only 7 of the pins are on my psu side of the AX860 cable
To answer your question, I wouldn't splice 8 into 6. You still only have the 6 pin leads on the board side of the connection going into the voltage delivery system of the card. What you are talking of doing would only increase the risk of shorting/damaging your card.
Originally Posted by jellybeans69
From sapphires own page -
Confirmation of a DVI port
Good read, thank you.IMO
it seems like a software issue, ie vBIOS bug or misconfiguration. Here's why it seems that way to me. We know the 6 pin connector is capable of providing well over the 75w of the pcie spec. Others have provided proof/past examples of that, I won't get into that. But it appears the card is pulling the extra voltage from the slot instead of the pcie connection. Maybe the voltage limit protocol is assigned to the wrong entry/path. Instead of the limiting the slot current it's limiting the connector instead. Sorry I'm on mobile and can't distinguish the lines of the graph in the pcper article.
Originally Posted by Derp
Thank you for sharing this. Sad that AMD tried to claim this was a rare occurrence because so many reviews failed to mention it. The real reason is because so few tested it at all.
Yep, I'm sure at AMD's secret hideout they were all like DAMN!! We would've gotten away with it if it wasn't for them meddling kids.
Originally Posted by CataclysmZA
It could have been verified when AMD had a lower-clocked, or even referenced clock-ed card tested. PCI-SIG testing, AFAIK, doesn't cover overclocking requirements.Don't you really mean to say that few reviewers were able to measure PCI-E power draw? Not everyone has that kind of equipment on hand.
As for the information from that document, it's over 800 pages long. There's so much information available that finding anything that actually tells us what's going on here is going to take a very, very long time. It might be better to ignore those numbers and work off the PCI-E Electromechanical specification.Warning: Spoiler! (Click to show)
As you can see, at no point is the PCI-E slot ever officially
given more than 75W of power to work with. Both the board and GPU need to adhere to that spec while making use of aux inputs to make up the difference.
The average draw of the GTX 750 Ti was below 75W, which is expected. The average of the RX 480, as measured in that graph, is 80W. That should not be the case, and the RX 480 is overdrawing on the PCI-E specification most of the time.
I mean, sure, there's provision for drawing 81W, at a stretch, if you're abusing the tolerances as much as you can and guessing that the board can handle it and doesn't have cheap caps, which is what AMD is doing here. I can see why they're doing it this way, but it's not the most ideal way to go about this. Slapping on an 8-pin connector would have rendered this all a non-issue.
I meant it the way I wrote it. That's what I remembered seeing in that AMA Reddit chatter. I was frustrated though that no one bothered to even do a little bit of checking, instead it was "oh nos, the computers are going to explode. Houses will burn zomg"
I did quote though and give the page number to narrow down the 800+ pages information. Which I was able to find within an hour of reading this thread at the beginning. I was hoping that others might be more familiar with the document and be able to chime in such as you did. Thank you for that.
I also didn't get a chance to reply in the review thread and I had intended to, that your review was a good read, again thank you, I will have to look more at your site when I have a chance. +rep.