Hi,
So - I have a crossfire set up of two R9 280x. When I purchased them they were constantly artefacting at stock speeds, after being given a 2nd for free, I proceeded to underclock/volt them to achieve stability:
My settings are: Stock for those that can't remember:
Voltage: 1150mV 1200mV
Core: 1040mhz 1070mhz
Vram: 1300mhz 1600mhz
However, for a while now (months) I have not been able to get the 2nd GPU to engage in crossfire - it is there, but stuck on 0% usage, 300mhz/150mhz clock/ram clock.
Does anyone have any ideas on what could be causing this? I have tried to include as thorough a set of things I've tested below.
Tested by disabling OverDrive through restoring factory settings - no success
Tested on: 18.2.1 - 17.7.2 - 16.12.2 - 15.12 - 15.7.1 - 14.12 - no success
Tested each card individually - both working
Tested with no AMD settings installed - no success
Tested by uninstalling and reinstalling Windows 10 - no success
Used new Crossfire cable - no success
As per AMD support advice, I have uninstalled MSI AB with Revo Uninstaller, uninstalled-reinstalled AMD drivers 18.23 (whatever the latest ones are 01/03/18), not installed MSI AB after:
Same problems, 1st GPU frequently getting stuck at 970/1600 (causing artifacts), 2nd GPU never being used beyond its 'parked' setting of 300/150, and all round hassle on what can only be assumed to be a driver issue.
Checked data using MSI Afterburner 4.4.2 and MSI Kombustor 3.0 - following complete removal of MSI and Windows reinstall, now only monitoring using AMD OverDrive
Checked playing on Warhammer: Total War, and MSI Kombustor 3.0
Please, if anyone is having similar issues don't hesitate to post your problems or solutions on here, the more data the better.
(Unless, of course, I'm the only R9 280x CF user with these issues, in which case I'm going to just blow my cards up with a shotgun and get a 1080).
At this point I'm assuming there is no help as I have scoured the internet to no avail, I've worked back methodically - even reinstalling Windows, and nothing has worked (despite both cards running fine). This must be a driver issue and, from what I'm gathering, no-one seems to have the problem themselves, or if they have they've already upgraded and ditched their old cards. I think it might be time for me to do the old switcheroo to green, sadly. Years of hassle with Crossfire will do this to a man.
Thanks for any help nonetheless,
JR
DXDiag (short)
------------------
System Information
------------------
Time of this report: 2/19/2018, 17:40:31
Machine name: JOHN-RAPPOPORT
Machine Id: {96E2205F-78B9-4F67-AC88-905FDDEAA8D3}
Operating System: Windows 10 Home 64-bit (10.0, Build 16299) (16299.rs3_release.170928-1534)
Language: English (Regional Setting: English)
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: Z87X-D3H
BIOS: BIOS Date: 08/02/13 22:37:08 Ver: 04.06.05
Processor: Intel(R) Core(TM) i5-4670K CPU @ 3.40GHz (4 CPUs), ~3.4GHz
Memory: 8192MB RAM
Available OS Memory: 8148MB RAM
Page File: 5162MB used, 11384MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 12
DX Setup Parameters: Not found
User DPI Setting: 96 DPI (100 percent)
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
Miracast: Available, with HDCP
Microsoft Graphics Hybrid: Not Supported
DxDiag Version: 10.00.16299.0015 64bit Unicode
No crossfire here, but you can disable/turn off wattman/overdrive by using the 'restore factory defaults' (do not reenable it). Some suggest you should then clean install the driver.
One thing to keep note of, is that amd changed/modified the wattman(overdrive ?) api in july '17 drivers. You need the newer msi-ab (may need to check for leftovers of older vers.). You may need to confirm if using older driver, will also need to use older msi-ab.
You could also post a query on 'guru3d.com' msi-ab forum section for suggestion on settings.