Processors
Intel® Processors, Tools, and Utilities
14395 Discussions

Core i7 not using all cores/HT?

idata
Employee
2,147 Views

Dell Optiplex 980 with Core i7 860. Fresh install of Window 7 x64. Device manager show 8 processors, CPU-Z shows 4 cores with 8 threads. When I watch the processor graph in Task Manager I only see activity on processor 1, 3, 5 and 7. HyperThreading is turned on in the BIOS but the machine does not appear to be using them. I'll see very small blips when doing something very processor intensive, but for the most part they are at 0%.

How do I utilize these extra "processors" ?

0 Kudos
9 Replies
idata
Employee
781 Views

It must not be processor intensive enough or does not support multi-core.

0 Kudos
idata
Employee
781 Views

Core not using all go to type in search msconfig boot configuration then advanced options click, you see number of processors click on it, then click on arrow it will show you all processors on your pc.

0 Kudos
idata
Employee
781 Views

MSCONFIG set to 8 processors, no change. I am encoding video and it only seems to use 4 "processors" at a time.

0 Kudos
idata
Employee
781 Views

Then it don't support HT then.

0 Kudos
idata
Employee
781 Views

What doesn't support HT? The processor? Or the software?

0 Kudos
idata
Employee
781 Views
0 Kudos
idata
Employee
781 Views

Is there some software I can use to make sure all is well?

0 Kudos
RGiff
Honored Contributor I
781 Views

There is a free program called CPUz that will show you everything about your CPU .

0 Kudos
idata
Employee
781 Views

Try downloading wprime 2.04 and set to run on 8 threads.

http://www.wprime.net/Download/ http://www.wprime.net/Download/

You might need to use admin rights to run it.

0 Kudos
Reply