Overclock.net - An Overclocking Community - View Single Post - [Reddit] RX 480 fails PCI-E specification

View Single Post
post #710 of (permalink) Old 07-03-2016, 12:36 AM
Mahigan
New to Overclock.net
 
Mahigan's Avatar
 
Join Date: Aug 2015
Location: Ottawa, Canada
Posts: 1,771
Rep: 877 (Unique: 233)
Some dude on the bitcoin forums claimed that his motherboard was fried from running 3x RX 480s (under-clocked his cards)....

well...

Take 6x R9 290xs each pulling 66W from the 12v rail and around 9W from the 3.3v rail of their respective motherboard PCIe slot. Do the math...

That is 450W being pulled from the motherboard (I ran that on several machines during the bitcoin heyday and many other users run similar configurations on cheap motherboards).

This user wants us to believe is that 3x RX 480s pulling 80W each from their respective PCIe Slots are somehow responsible for burning out the motherboards 24-pin connector.

Lets do the math.. 3x 80W = 240W.

So let me ask you all... how come many bitcoin miners can run 6 R9 290xs on the same motherboard using PCIe ribbon cables pulling 450W without a single issue yet 3 RX 480s are somehow responsible for burning out a motherboard after pulling 240W?

What is a larger number. 240 or 450???

"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