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[Reddit] RX 480 fails PCI-E specification - Page 62  

post #611 of 1129
Quote:
Originally Posted by ProclusLycaeus View Post

Are you intentionally ignoring the link I provided to the GTX 960 Strix showing that from the PCIe connector they only pull 30 watts?

Are you intentionally ignoring the link I provided where they use not 1 but 5 different sources and tests to measure how much the GTX 950 really spikes up in power consumption?

Anyway, this is not about the PCIe Power Connector, but the PCIe Slot.
post #612 of 1129
Thread Starter 
Quote:
Originally Posted by ZealotKi11er View Post

They is why new MB have much better PCIE slots.

Except they don't. But by all means, please show me a manufacturer who makes the card edge connector ... the most common being Molex ... who makes one with a higher per pin rating than 1.1A.

I'll wait.
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post #613 of 1129
Thread Starter 
Quote:
Originally Posted by Dargonplay View Post

Are you intentionally ignoring the link I provided where they use not 1 but 5 different sources and tests to measure how much the GTX 950 really spikes up in power consumption?

It spikes, yes, but NOT from the PCIe connector on the motherboard.

Also, looking at your posting history for the past 4 days, I see nothing that you linked to anything.
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post #614 of 1129
Quote:
Originally Posted by nagle3092 View Post

Zero issues here, running them in crossfire.

Impossible!

According to an unknown new account over at the AMD forums... your PCIe slots should have failed by now and/or your entire system stopped powering up! I am posting this in every single forum in order to help nVIDIA sell more GTX 1060s by seeding fear of the RX 480s.

I am fully aware that the RX 480 is an enormous bang for the buck and likely to outsell every single current GPU on the market and as such I cannot sit on the sidelines while AMD gains enormous/copious amounts of market share.

Hail Hydra!
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post #615 of 1129
Quote:
Originally Posted by ZealotKi11er View Post

Quote:
Originally Posted by ProclusLycaeus View Post

They aren't 2.2A each, they are 1.1A ... just as PCPer said.

Here is the spec sheet by Molex, who makes them, and you can see in plain view, on page 2, they are 1.1A per pin or 5.5A total. At 12 VDC, that translates to 66 watts total on all 5 pins.

http://www.molex.com/pdm_docs/ps/PS-87715-200.pdf

The weak link is the PCIe connector on the motherboard where the card plugs in ... just as PCPer and Toms Hardware has said.

The card, without overlocking, running Metro Last light, pulls between 6.5A and 7A on the PCIe motherboard connector. As you can clearly see, that exceeds the rating of the connector on the motherboard.

They is why new MB have much better PCIE slots.

The problem is that the target market for the RX 480 are the budget builders who likely have budget motherboards. Those boards will be built with little, if any, tolerance to save costs.

It's just a problem that could have entirely been avoided if AMD had used an 8-pin in the first place with a better 70/30 split for power distribution.
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post #616 of 1129
Quote:
Originally Posted by Mahigan View Post

Impossible!

According to an unknown new account over at the AMD forums... your PCIe slots should have failed by now and/or your entire system stopped powering up! I am posting this in every single forum in order to help nVIDIA sell more GTX 1060s by seeding fear of the RX 480s.

I am fully aware that the RX 480 is an enormous bang for the buck and likely to outsell every single current GPU on the market and as such I cannot sit on the sidelines while AMD gains enormous/copious amounts of market share.

Hail Hydra!

Well there was that issue where they consumed my first born son but, all is well now!
 
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post #617 of 1129
Quote:
Originally Posted by thebirdybird View Post

i'd thought i create this account to post some cool information
Warning: Spoiler! (Click to show)
so on the amd discord, a person found out how to actually fix this problem.

so first off, the cause of the problem which i will link in these images from the amd discord.

http://i.imgur.com/7s12VqC.png

http://i.imgur.com/g3QPxy0.png

http://i.imgur.com/amSNLm2.png

http://i.imgur.com/Gekq192.png
as you can see in these 4 images, the 6 pin is non-compliant due to the way the pcb is designed. usually there are 2 grounds + 1 ground that is not connected to the other two. this is to check whether the 6 pin is hooked up to the card. however for the rx 480, all three grounds are connected to another another, and as you can see, one poster says that it'll require a new pcb.
Warning: Spoiler! (Click to show)
now in image 2, basically the pcie express and the 6 pin also power the vcore, and also the person goes on to state that the pcie also powers the vram. and to confirm that in image three, he says to check out actually hardcore on twitch as his source to confirm the problem. and from what he can tell, amd also did not bridge the pcie power and the 6 pin power.

lastly, in image 4, 3 vrms - powered by the 6 pin - 3 vrms powered by the pcie express.

now, there is a fix to the whole thing, besides the amd driver update next week.

so take a look at image 5.

http://imgur.com/YF9LpZP

note the red text.

lastly, image 6, the fix to this

http://i.imgur.com/5Zzt1zE.png

the solution to fix the whole problem, is you solder the pins on the left, to bridge the pcie express 12v rail, and the 6 pin rail. then, you desolder the pcie power rails to the vrms. and he says, by doing that, the pcie express should stay below 60 watts at average. and he does warn at the end, that if you don't know what you're doing, don't try it. but anyways, i thought i'd share some cool information in my first post from the people in the amd discord, hope you enjoy.

all the grounds being connected is pci-sig compliant:
Warning: Spoiler! (Click to show)
and in a way it's irrelevant, what matters is the second sense pin (#6) on an 8 pin connector to determine that 150 watts is available from the connector.
Warning: Spoiler! (Click to show)

also someone mentioned they didn't bridge the pci-e and the 6 pin connector. well if they did THEN the card would be non compliant.
Warning: Spoiler! (Click to show)
since both power sources are to be kept separately.

moral of the story:

don't trust chat rooms.
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post #618 of 1129
Quote:
Originally Posted by looniam View Post

all the grounds being connected is pci-sig compliant:
Warning: Spoiler! (Click to show)
and in a way it's irrelevant, what matters is the second sense pin (#6) on an 8 pin connector to determine that 150 watts is available from the connector.
Warning: Spoiler! (Click to show)

also someone mentioned they didn't bridge the pci-e and the 6 pin connector. well if they did THEN the card would be non compliant.
Warning: Spoiler! (Click to show)
since both power sources are to be kept separately.

moral of the story:

don't trust chat rooms.

Hang on you mean to tell me I shouldn't trust everything I read on the internet? eek.gif

My whole life has been a lie then. frown.gif
post #619 of 1129
Quote:
Originally Posted by Vowels View Post

The problem is that the target market for the RX 480 are the budget builders who likely have budget motherboards. Those boards will be built with little, if any, tolerance to save costs.

It's just a problem that could have entirely been avoided if AMD had used an 8-pin in the first place with a better 70/30 split for power distribution.

That is very true but at the same time if you have a system older then 5 years then its better to upgrade that first.
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post #620 of 1129
Is this still going on??? have these people complaining not ever heard of Factor Of Safety that the majority of things are designed to incorporate. Almost all things made are designed to handle marginal tolerances outside of its rated specifications. ie a desk designed to hold 50lbs and you got 75 on it or modified engines. This is no different. People should be more worried about the toxic cancer you get from reading this thread than the RX 480.
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