[Reddit] RX 480 fails PCI-E specification - Page 62 - Overclock.net - An Overclocking Community

Forum Jump: 

[Reddit] RX 480 fails PCI-E specification

 
Thread Tools
post #611 of 1129 (permalink) Old 07-02-2016, 03:39 PM
 
Join Date: Oct 2012
Location: Florida
Posts: 1,490
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.
Dargonplay is offline  
Sponsored Links
Advertisement
 
post #612 of 1129 (permalink) Old 07-02-2016, 03:40 PM - Thread Starter
New to Overclock.net
 
ProclusLycaeus's Avatar
 
Join Date: Sep 2015
Location: USA
Posts: 78
Rep: 13 (Unique: 13)
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.

ProclusLycaeus is offline  
post #613 of 1129 (permalink) Old 07-02-2016, 03:40 PM - Thread Starter
New to Overclock.net
 
ProclusLycaeus's Avatar
 
Join Date: Sep 2015
Location: USA
Posts: 78
Rep: 13 (Unique: 13)
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.

ProclusLycaeus is offline  
Sponsored Links
Advertisement
 
post #614 of 1129 (permalink) Old 07-02-2016, 03:44 PM
New to Overclock.net
 
Mahigan's Avatar
 
Join Date: Aug 2015
Location: Ottawa, Canada
Posts: 1,771
Rep: 877 (Unique: 233)
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!

"Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth." - Arthur Conan Doyle (Sherlock Holmes)
Kn0wledge
(18 items)
CPU
Intel® Xeon E5-1680 V2 @ 4.5GHz
Motherboard
ASUS ROG Rampage IV Extreme
GPU
ASUS ROG Strix GeForce RTX 2080Ti
RAM
32GB Corsair Dominator Platinum PC3-17066
Hard Drive
WD Black NVMe M.2 2280
Hard Drive
256GB Samsung 840 Pro SSD
Hard Drive
4TB Western Digital Caviar Black
Optical Drive
ASUS internal BW-12B1ST Blu-ray writer
Power Supply
XFX PRO1050W Black Edition
Case
Cosmos II Ultra Tower
Operating System
Windows 10
Operating System
Ubuntu 14.04.3 LTS
Monitor
Dell UltraSharp 2408WFP
Monitor
Dell UltraSharp 2408WFP
Monitor
Dell UltraSharp 2408WFP
Keyboard
Corsair Vengeance® K90 Performance
Mouse
Logitech G9x Laser Mouse
Audio
ASUS Xonar Essence STX II
▲ hide details ▲
Mahigan is offline  
post #615 of 1129 (permalink) Old 07-02-2016, 03:47 PM
New to Overclock.net
 
Vowels's Avatar
 
Join Date: Dec 2008
Location: Vancouver
Posts: 797
Rep: 31 (Unique: 30)
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.

Vowels is offline  
post #616 of 1129 (permalink) Old 07-02-2016, 03:49 PM
New to Overclock.net
 
nagle3092's Avatar
 
Join Date: May 2010
Location: 'Merica
Posts: 6,038
Rep: 386 (Unique: 312)
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!



nagle3092 is offline  
post #617 of 1129 (permalink) Old 07-02-2016, 03:49 PM
professional curmudgeon
 
looniam's Avatar
 
Join Date: Apr 2009
Posts: 9,471
Rep: 776 (Unique: 446)
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.

Remember the golden rule of statistics: A personal sample size of one is a sufficient basis upon which to draw universal conclusions.
Upload the computer to Dropbox and provide a link to it so others may download it to examine and give advice for repairs.
loon 3.2
(18 items)
CPU
i7-3770K
Motherboard
Asus P8Z77-V Pro
GPU
EVGA 980TI SC+
RAM
16Gb PNY ddr3 1866
Hard Drive
PNY 1311 240Gb
Hard Drive
1 TB Seagate
Hard Drive
3 TB WD Blue
Optical Drive
DVD DVDRW+/-
Power Supply
EVGA SuperNova 750 G2
Cooling
EKWB P280 kit
Cooling
EK-VGA supremacy
Case
Stryker M [hammered and drilled]
Operating System
Win X
Monitor
LG 24MC57HQ-P
Keyboard
Ducky Zero [blues]
Mouse
corsair M65
Audio
SB Recon3D
Audio
Klipsch ProMedia 2.1
▲ hide details ▲


looniam is offline  
post #618 of 1129 (permalink) Old 07-02-2016, 03:53 PM
‾\_(ツ)_/‾
 
magnek's Avatar
 
Join Date: Aug 2014
Location: Калифорния
Posts: 5,616
Rep: 477 (Unique: 191)
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

- 4930K @ 4.5 GHz | Asus X79-Deluxe
- MSi 980 Ti Gaming @ 1500/8000
- 4x4 GB Dominator Platinum 2400 MHz
- 2x 850 Pro 2TB
- Seasonic PRIME Titanium 850W
- Phanteks Enthoo Primo
- Custom watercooling (420+360+240)
- XB270HU 27" 1440p 144Hz IPS
magnek is offline  
post #619 of 1129 (permalink) Old 07-02-2016, 03:55 PM
PC Evangelist
 
ZealotKi11er's Avatar
 
Join Date: May 2007
Location: Toronto, CA
Posts: 45,617
Rep: 1793 (Unique: 1172)
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.

Yamato
(10 items)
Ishimura
(13 items)
CPU
Intel Core i7-6700K @ 4.6GHz
Motherboard
ASUS Z170 Deluxe
GPU
EVGA GeForce GTX 1080 Ti Hybrid
RAM
Corsair Vengeance LPX 16GB DDR4-3000 CL15
Hard Drive
Samsung SM961 512GB
Hard Drive
HGST DeskStar NAS 6TB
Power Supply
EVGA SuperNOVA 750 P2
Cooling
Cooler Master Nepton 280L
Case
Fractal Design Meshify C TG
Operating System
Microsoft Windows 10 Pro 64 Bit
CPU
Intel Core i7-3770K @ 4.8GHz
Motherboard
ASRock Z77E-ITX
GPU
AMD Radeon Vega Frontier Edition
RAM
AVEXIR Blitz 1.1 16GB DDR3-2400MHz CL10
Hard Drive
SanDisk Ultra II 960GB
Hard Drive
Toshiba X300 5TB
Power Supply
EVGA SuperNOVA 750 G3
Cooling
Corsair H100i GTX
Case
Fractal Design Define Nano S
Operating System
Microsoft Windows 10 Pro 64 Bit
Monitor
LG OLED55C7P
Keyboard
Cooler Master MasterKeys MK750
Mouse
Finalmouse Air58 Ninja
▲ hide details ▲


ZealotKi11er is offline  
post #620 of 1129 (permalink) Old 07-02-2016, 03:59 PM
Hydro Therapist
 
Fifth Horseman's Avatar
 
Join Date: Sep 2014
Location: Ohio
Posts: 471
Rep: 22 (Unique: 20)
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.

CPU: i7-8700k @ 5 GHz
GPU: GTX 1080 Ti Aorus Extreme @ 2,114mhz
RAM: Trident Z RGB 32GB Ddr4-3000
Motherboard: Gigabyte Aorus Z370
Storage: Intel Optane 900p
Cooling: Dual EK Coolstream 560mmm x 45mm, Dual D5 Pumps
Fifth Horseman is offline  
Closed Thread

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Overclock.net - An Overclocking Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off