AMD Processors
Decrease font size
Increase font size
Topic Title: Disable one core in quad-core chip?
Topic Summary: Need help on disabling a single defective core in a Phenom X4 9750
Created On: 08/15/2012 12:06 PM
Status: Read Only
Linear : Threading : Single : Branch
Search Topic Search Topic
Topic Tools Topic Tools
View similar topics View similar topics
View topic in raw text format. Print this topic.
 08/15/2012 12:06 PM
User is offline View Users Profile Print this message

Author Icon

Posts: 1
Joined: 08/15/2012

Hello people,

I have a PC running Windows Home Server 2011 (x64, Version 6.1, build 7601 SP1) off a Phenom X4 9750 Quad Code (HD9750WCJ4BGH). Lately I've been experiencing multiple BSODs, and have come to the conclusion that it is a CPU defect. Specifically, prime95 CPU test invariably crashes the machine, and at one instance I got a "FATAL ERROR: Rounding was 0.5, expected less than 0.4" off Worker #4. If I run prime95 with "Affinity" set (using task manager) to a single core, and the results confirm my suspicion - that it's a single core that is defective and the machine crashes every time I set affinity to that core and run prime95.

What I need to do is disable that specific core. No such option in BIOS, and the msconfig route allows me to select "Number of processors" though not disable a specific core. I realize that I will take a performance hit, but that is acceptable for this PCs role.

Can anyone help?


(Sorry about crosspost from Gaming Forum, did not find this forum till later)
 08/15/2012 07:38 PM
User is offline View Users Profile Print this message

Author Icon
ROGue Warrior

Posts: 2978
Joined: 11/28/2008

Not much you can do if the option is not available in the bios.

May look at a bios update for your motherboard if it's available.

Phenom II X6 1100T B.E.@ 4.26GHz
Corsair H70 Core Hydro
ASUS Crosshair V Formula
2x4GB G.Skill RipjawsX@ 1894MHz, 9-10-9-28
SLI: 2x EVGA GTX 570's@ 902/1804/2032
Creative SB X-Fi Xtreme Gamer
Corsair HX850W Modular
Cooler Master HAF 922
2x Win 7 Home Premium (x64)
112018 users are registered to the AMD Processors forum.
There are currently 0 users logged in.

FuseTalk Hosting Executive Plan v3.2 - © 1999-2015 FuseTalk Inc. All rights reserved.

Contact AMD Terms and Conditions ©2007 Advanced Micro Devices, Inc. Privacy Trademark information