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[Reddit] RX 480 fails PCI-E specification - Page 12  

post #111 of 1129
I really, really wanted to like this card. Even with Europeans charging 240-300€ for it, I REALLY wanted to like this card and get off NVIDIA's price gouging.

Looks like it'll be a 5th generation of NVIDIA for me in a row, and I guess I'm dishing out a few extra bucks for GSYNC. Really really not looking forward to AMD Zen either, anymore. They can't do anything right. So many things after Phenom II X6 have been an utter disaster.
post #112 of 1129
Quote:
Originally Posted by Derp View Post

Oh yeah, some random aftermarket GTX 960 had a similar issue! So we can ignore the RX 480's problem right? Wrong.

Do you own the card? If not why would you even care
Quote:
Originally Posted by mutantmagnet View Post

1 or 2?

It's 5 so far.

4 in this roundup by videocardz

http://videocardz.com/61667/what-reviewers-say-about-radeon-rx-480-exceeding-pci-express-power-specifications

The 5th is from some french website.


Well actually only two listed mention specifically that the card draws more than 75watts through the pcie slot. The rest just note that the card draws more than the 150w design power of the board
post #113 of 1129
Quote:
Originally Posted by lolfail9001 View Post

Well done, though there are more than 2 reviewers that actually confirmed that, simply as you know, not many have spare multimeters. Though i'll wait for [H] testing, should be up soon.
Also, the interesting part is interesting, but there's the interesting part: there's a reason we've come to expect this 75W value as limit. And there's a reason i did not see slot power limit controllable on any motherboard.

Right,and I understand that. But if it's BIOS level programming, not user configurable stuff, then the motherboard would be out of spec,not the pcie adapter.
Read a little further down on page 527 from what I quoted. I don't have time to read a ton of that document but from the Reddit user I quoted and the supporting document part I looked at, it seems as if this is something that the BIOS or vBIOS configures during POST. Or the slot limit parameter is not being configured.
I just don't think this is a "AMD didn't use a 8pin so the card is over drawing from the slot because it's AMD" as many are insinuating.

Late here will catch up tomorrow.
post #114 of 1129
LOL at people dismissing these "few" reviews who found the issue. You do realize it's only few because only few of them have equipment and knowledge how to test this properly. 90% of reviewers are complete noobs who just test total system power draw from the wall. doh.gif

by the way, I also read that press has different bios than retail cards, any truth to this claim, and if yes, why there is no outrage over this?
post #115 of 1129
Quote:
Originally Posted by DaaQ View Post

Right,and I understand that. But if it's BIOS level programming, not user configurable stuff, then the motherboard would be out of spec,not the pcie adapter.
Read a little further down on page 527 from what I quoted. I don't have time to read a ton of that document but from the Reddit user I quoted and the supporting document part I looked at, it seems as if this is something that the BIOS or vBIOS configures during POST. Or the slot limit parameter is not being configured.
I just don't think this is a "AMD didn't use a 8pin so the card is over drawing from the slot because it's AMD" as many are insinuating.

Late here will catch up tomorrow.

It is configured during POST indeed. But considering i never see it mentioned, i am of opinion it sits at 75W just because it's an old default.
post #116 of 1129
AMD cannot afford to have AIB partners fix this card's issues.

The custom PCB versions' $50 premium will negate the price advantage of the RX 480 and pit it against a, probably, better designed reference GTX 1060.
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post #117 of 1129
Quote:
Originally Posted by ProclusLycaeus View Post

Yeah, and I once got a Prius up to 110mph and it wasn't pretty and I'm sure if I blew the engine, Toyota wouldn't honor the warranty.

Again, we aren't talking overclocking, this is just stock speeds here.

Odds are that is why the OC's vary in the reviews ... some PSU's could handle it and they got 15-20% OC's ... others couldn't and that is why they only got 2-5% OC.

This will be a PR mess.
Yes, but if you don't have a trash PSU, are you really going to buy an RX 480 and not something with a little more umph? This was a card designed for budget builds and the masses, not people who buy top end PSU's and read OCN all day long.

He just used his own situation as an example to show that the connectors can be pushed out of their rated specification without melting or whatever.

I've currently got an i7 5820k, 16gb DDR4, Corsair 750RM and a HD7950. I'm definitely thinking about getting a RX480. Because I've given up on getting the best considering the ridiculous pricing.. (I'm looking at you, Nvidia.)
I've got an Asus MG279Q 1440p 144Hz monitor and I run most games at low (some even at 1080p) because I simply prefer FPS over eye candy, and my HD7950 is still capable of doing that, barely.
A RX480 will allow me to play my games on 1440p with 144Hz. Now I do have to say one thing, performance isn't exactly that great, in my opinion it should've been as fast as the R9 Nano.

"Yes, but if you don't have a trash PSU, are you really going to buy an RX 480 and not something with a little more umph? This was a card designed for budget builds and the masses, not people who buy top end PSU's and read OCN all day long." Is a load of nonsense though.
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post #118 of 1129
Roommate has the card and an 880G mobo with 400w PSU, uses 120W during load, I recommended he did not OC. Problem solved thumb.gif
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post #119 of 1129
Quote:
Originally Posted by DaaQ View Post

Ok, since the bandwagon is speeding along so fast that pitchforks are flying everywhere. I have wasted 45 minutes to read through this thread. I am going to provide some information I am pretty sure few will actually read. I will start by getting the stuff I am not going to bother providing any backup for first.

According to the internet, the PCIE slot pulling over 75w was from 2 reviewers out of 20, of the other reviewers who were shared this information, non were able to recreate the scenario. So not being able to recreate the current overdraw by other reviewers, really means something in itself. But AMD fail is AMD fail, such is the oh too familiar mantra. rolleyes.gif Anyone that comes at me with proof.gif or your argument is invalid. How about you actually do some reading if your so concerned with proof. I seen the above information earlier in the day and am not going to spend the time trying to convince people that won't be convinced anyway.

Now for the good stuff.

Here's a juicy bit from this link here, which ironically is where I heard some of the above. https://www.reddit.com/r/pcmasterrace/comments/4qfy9d/i_work_at_amd_the_time_has_come_to_ama_about/
Now the link provided in that quote is really interesting. ( DL it Looniam if you don't have it you will love it )
Hopefully those that are so inclined actually spend some of their time and actually read some of the info in that link.

So it's late and I need to get to bed, but this is what I quickly found in that 800+ page document.
Page 527 to be specific, this concerns slot power limit control.
The above sounds to me either, vBIOS or BIOS level. Would be quite interesting if the motherboard was responsible for assigning the slot power limit wouldn't it?

devil.gif away.
Ektobuffer has edited his post to include another para fyi
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post #120 of 1129
Quote:
Originally Posted by Derp View Post

Props to Tomshardware for revealing this issue. I have seen people bad mouth Toms but their RX480 review was better than most of their competitors.

thumb.gif

Tom's is often garbage when it comes to game testing methodology or creating tables of GPU ranks etc. But articles written by Chris Angelini are usually top notch.
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