Solved

My Win8.1 Install is Missing Processor Cores?

Posted on 2013-12-06
4
485 Views
Last Modified: 2013-12-29
I recently upgraded my computer (Built a new one) with an Intel i7-4930K processor. I was a little disappointed at the performance because the differences between my old computer (an i7 that is three years old) and this one is negligible.

I have noticed that he CPU is frequently pinned to 100%, which would account for the sluggishness.

Then I saw this:

WTF? 2 cores?
This processor has 6 cores, not 1. The total logical processors should be 12 not 2.

Device manager sees them (6 cores with 2 logical processors per core for a total of 12):

6 cores @ 2 threads each = 12
But it's not performing like it should.

What am I missing here? Task manager and resource monitor should see 1 socket, 6 cores, 12 logical processors. How do I fix this?
0
Comment
Question by:DrDamnit
4 Comments
 
LVL 17

Expert Comment

by:Chris Millard
ID: 39702196
Run MSCONFIG, then goto the Boot tab and click on Advanced options... Make sure you don't have the "Number of processors:" options ticked, or if you DO want it checked, set the correct number from the drop down.
0
 
LVL 95

Accepted Solution

by:
Lee W, MVP earned 500 total points
ID: 39702252
Checked BIOS/UEFI to ensure there's no setting disabling multi-core and/or have you tried upgrading BIOS? (No idea why this is happening so looking at possible causes).
0
 
LVL 32

Author Comment

by:DrDamnit
ID: 39702292
Upgrading the BIOS did it. According to Asus' website, the i7-4930K is supported at BIOS version 4301, which is what I had installed.

What they don't tell you, is that this board (Sabertooth X79) uses  a series of Xeon devices to control the CPU. I had to get updated drivers from here, and then update the BIOS to the latest version, whcih is purported to be the support update for XEON chips, but the i7 needs the update so the drivers can talk to the other parts and peices on the CPU.

None of this is in the documentation, drivers not on the CD. Windows 8.1 just shrugs its shoulders.

I figured it out because I had some "Base system devices" that weren't installed. That led me to the Xeon drivers (above), and the Xeon made me think that there would be a BIOS update...

Sometimes... it shouldn't be this hard. :-)
0
 
LVL 53

Expert Comment

by:McKnife
ID: 39745390
"What they don't tell you, is that this board (Sabertooth X79) uses  a series of Xeon devices to control the CPU." Don't let it bother you, but that reads funny... Xeon is a processor type itself not a "device" used to control one.
0

Featured Post

Why You Should Analyze Threat Actor TTPs

After years of analyzing threat actor behavior, it’s become clear that at any given time there are specific tactics, techniques, and procedures (TTPs) that are particularly prevalent. By analyzing and understanding these TTPs, you can dramatically enhance your security program.

Join & Write a Comment

What do we know about Legacy Video Conferencing? - Full IT support needed! - Complicated systems at outrageous prices! - Intense training required! Highfive believes we need to embrace a new alternative.
In the modern office, employees tend to move around the workplace a lot more freely. Conferences, collaborative groups, flexible seating and working from home require a new level of mobility. Technology has not only changed the behavior and the expe…
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…
With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…

708 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now