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Radeon RX 480 "Polaris" Launched at $199

Rroff said:
Yeah a lot of modern boards now have 2-3 oz copper so the traces potentially are way over specced (like 15 amps or so) while the pins and connector aren't usually uprated so the weakest link in the context of motherboards that have "enough copper".
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yes what worries me more is that it may not be the case of just plug in the card and its going to blow shut down ect ...it may take some time before things start to happen develop ....
 
Unfortunately not something that can be confirmed or dismissed as a problem without better information from the manufacturers involved. What I do know is that you don't get away with long term abusing current if there is a weakness there without consequences :S
 
http://composter.com.ua/documents/PCI_Express_Base_Specification_Revision_3.0.pdf

Incidentally PCI-E 3.0 specifications focus on the implementation of the technology, communication protocols etc. The capabilities of the physical hardware/connector seems to fall under Platform/Form Factor specifications. Probably explain why PCI-SIG would not be concerned with power draw in compliance testing.


On the power side, there are guidelines for implementing power budgeting and per slot power limits (p527-529), which is where my query on bios power slot limits is originating if anyone was wondering.

P528-9:
Example Adapter Behavior Based on the Slot Power Limit Control Capability
....In this case, since the adapter consumes power above the lowest power limit for a slot, the adapter
must be capable of scaling or disabling to prevent system failures. Operation of adapters at power
levels that exceed the capabilities of the slots in which they are plugged must be avoided.
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IIRC the "power" use for the whole device in the slot is a guideline anyhow with an advisory for a thermal/electrical envelope of 300 watt but aslong as you demonstrate you've taken the guidelines into consideration that is all that matters to be compliant.
 
Seanspeed said:
As you admit you are also not an expert in these areas, how on earth are you trying to claim that there is no actual issue here? We've had people with reports of failed motherboards using it, so there may well be something to it. Certainly some tech sites that do have experts believe there could be something to it.

I dont think you realize how hypocritical your comment was. And the persecution complex whining is just all too typical.
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You do love saying people have a persecution complex lately. Is it just a fad?

I do believe that most boards will not have an issue with this but it shouldn't be doing it regardless. We will see what the driver update brings later today.
 
I have an RMA granted for this card by OCUK, but just trying to work out if the reason the screen signal turns off and I have to restart the PC is a faulty displayport to DVI cable, or would the power issue cause this.
 
vinster345 said:
I have an RMA granted for this card by OCUK, but just trying to work out if the reason the screen signal turns off and I have to restart the PC is a faulty displayport to DVI cable, or would the power issue cause this.
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I had some problems with a DP cable that worked fine at 60Hz but choosing 120Hz resulted in the screen flickering and then going off. A new DP1.2 cable from Ugreen sorted that out though.
 
Rroff said:
IIRC the "power" use for the whole device in the slot is a guideline anyhow with an advisory for a thermal/electrical envelope of 300 watt but aslong as you demonstrate you've taken the guidelines into consideration that is all that matters to be compliant.
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Yup those form-factor related considerations, which the power/thermal envelope would fall under, are mentioned in the document as being outside the scope of the PCI-E 3 base specification.

What is interesting is in the document (p527-529) it is describing a mechanism to control power draw through a slot.
Slot Power limit control: " PCI Express provides a mechanism for software (platform firmware) controlled limiting of the maximum power per slot that a PCI-E adapter (associated with that slot) can consume".

It seems possible that some game crashing/instability could be related to this feature as the card attempts to draw more power than permitted by the platform firmware though a single slot, rather than it being attributable to the inability of the platform (for eg Greg's enthusiast grade motherboard) to deliver more than 75W through a single slot.
 
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beany_bot said:
Whos to say these motherboards wouldn't have failed not using it? Mobos will still fail...

I watched a report that said nearly every card has spike on the PCI socket above the 75 watts. Some much more than the 480. I dont think this is an issue.
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Spikes is absolutely irrelevant though, it is the average load that is important.

Anyone posting pictures of a 750ti or 960 showing spikes above 75w and claiming the 480 is fine because of that don't know what they are talking about -add them to your ignore list.

It is the average load that will cause copper traces to burn out, VRMs to get too hot, power regulators to fail and ultimately risk killing your motherboard.
 
Yeah stuff like current inrush on startup/switching is a fact of electronics - most stuff is specced to withstand that for very short periods.
 
ordered one and can't wait to give it a go...delighted with AMD's approach here...I'm usually an Nvidia guy but they have forgotten what value for money means...

Excited to try the Sapphire card...some of the best people I know are AMD users and fans...they must know something...

And if it's not for me, that's fine too...I'll make up my own mind :)

Still amazed that OCUK provide us this platform for this debate and discussion...as well as interacting with all of us...and offering some amazing hardware and toys....that's why I'm a PC builder...for the community and engagement...nothing like it ;)
 
Gregster said:
It is posts like this that really get my goat. I dare to post something negative about my experience and you tell me "enough with the drama already". What the hell fella and try and see it from my perspective. I worked a 12 hour day Friday, drove 48 miles to pick up the parcel that I missed as I was really excited to have a play, get home and have nothing but issues, spend the next 2 days trying this and that and fiddling with Wattman and still no joy but it was stable in The Division for 2 or more hours gameplay but not in others. Sure could be me doing something wrong or could well be a faulty card but get over yourself with your condescending post!
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Really greg? You were working hard, boo hoo. Most people work hard, we all have lives, we all have things that go wrong. Most of us make sacrifices to get the things we want.

You read the reviews on this card, you said it was crap. That was your exact words.

You stated on the 1080 thread that you wouldn't buy reference coolers again because they weren't good enough.

When I heard you were buying the reference 480 card I told you why don't you wait and get a custom card to be fair for the reviews as the stock cooler is useless. You got upset with me at that, and claimed you didn't know the stock cooler was bad.

And again I ask the question, You waited for a custom 1080, why didn't you wait for a custom 480??

Your card is faulty and your making a huge big deal out of it. Does it suck to get a faulty card? Yes. You are gutted. But you are going way over the top. Saying things like sitting out the 480 now, not recommending it to people that ask, condemning every 480 because you have a faulty one.

Gutted and disappointed after making a purchase, yeah that's understandable and I hate it when that happens to me and felt bad that it happened to you. But the drama was you hating on every 480. It's a faulty card, no big deal, just return it and get a proper one or wait until the custom ones come out. Which I advised from the very start.
 
melmac said:
Really greg? You were working hard, boo hoo. Most people work hard, we all have lives, we all have things that go wrong. Most of us make sacrifices to get the things we want.

You read the reviews on this card, you said it was crap. That was your exact words.

You stated on the 1080 thread that you wouldn't buy reference coolers again because they weren't good enough.

When I heard you were buying the reference 480 card I told you why don't you wait and get a custom card to be fair for the reviews as the stock cooler is useless. You got upset with me at that, and claimed you didn't know the stock cooler was bad.

And again I ask the question, You waited for a custom 1080, why didn't you wait for a custom 480??

Your card is faulty and your making a huge big deal out of it. Does it suck to get a faulty card? Yes. You are gutted. But you are going way over the top. Saying things like sitting out the 480 now, not recommending it to people that ask, condemning every 480 because you have a faulty one.

Gutted and disappointed after making a purchase, yeah that's understandable and I hate it when that happens to me and felt bad that it happened to you. But the drama was you hating on every 480. It's a faulty card, no big deal, just return it and get a proper one or wait until the custom ones come out. Which I advised from the very start.
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What the hell you on about? I don't even know where to start with your condescending post. Where the hell did I say it was crap? Even on my review I was still positive, even though I was proper stressed and worn out. You have absolutely no idea about me or what is what, so I would appreciate less of your guff. Sure it might be faulty or it might be something else and I am waiting for drivers but get off that high horse fella and chill out.
 
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