Official GIGABYTE Forum

Questions about GIGABYTE products => Motherboards with Intel processors => Topic started by: george on July 11, 2011, 11:52:45 pm

Title: CPU-Z only shows 2 cores?
Post by: george on July 11, 2011, 11:52:45 pm

I opened CPU-Z to check on my I7-875K power saving function but it only shows 2 cores and 4 threads.
Then opened up another temperature monitoring program, RealTemp and it only showed temperatures for 2 cores.
Went into BIOS and found the temperatures for all 4 cores so that was good.

Also in BIOS I have all cores enabled, but before I remember there being 4 cores and 8 threads in CPU-Z.

How can I check if all my cores are working?

System:

CPU: I7-875K

CPU COOLER: Cooler Master Hyper 212+

MB: GIGABYTE GA-P55-USB3 (rev. 2) BIOS: F9

RAM: 4GB G.SKILL Ripjaws Series 1600
Speed: DDR3 1600 (PC3 12800)
Cas Latency: 7
Timing: 7-8-7-24-2N
Voltage: 1.65V (set to 1.64V)

GPU: XFX HD-577X-ZNFC 5770 1GB

PSU: CORSAIR 650TX

OS: Windows 7 home premium 64bit OEM  SP1

HD: SAMSUNG Spinpoint F3 HD103SJ 1TB

OPTICAL: ASUS DRW-24B1ST/BLK/B/AS

CASE: COOLER MASTER RC-692-KKN2 CM690 II Advanced

MOUSE: Microsoft IntelliMouse Optical 1.1A

KEYBOARD: Microsoft Comfort Curve Keyboard 2000

MONITOR: ASUS VH222H Black 21.5 (set to 1920X1080 60MHZ)

Title: Re: CPU-Z only shows 2 cores?
Post by: george on July 12, 2011, 01:05:03 am

I tried a program called Belarc advisor and found this?  ???


Processor
2.93 gigahertz Intel Core i7 K 875
32 kilobyte primary memory cache
8192 kilobyte secondary memory cache
64-bit ready
Multi-core (2 total)
Hyper-threaded (4 total)

Title: Re: CPU-Z only shows 2 cores?
Post by: F5BJR on July 12, 2011, 02:49:43 am

*
Hum ... a phantom has exchanged your CPU !!

Remove the CPU Cooler and look the Intel number

Windows can also identify the CPU :

--> Panel Config you have the CPU number ... Intel Core xxxx

or

--> devmgmt.msc --> Processor --> xxx * processors yyy zzz to abcd speed

For me i have :

--> Panel Config  i have  ... Intel Core i7 CPU

and :

--> devmgmt.msc --> Processor --> 8 * processors i7 CPU 930 to 2.80 Ghz

also simple : Windows Taskmgr --> Performance and --> i have 8 proccess  with my I7-930

With Open HardWare Monitor find 4 * CPU Cores

Pierre

* Belarc Advisor report for me :

Processor
2,80 gigahertz Intel Core i7 930
32 kilobyte primary memory cache
8192 kilobyte secondary memory cache
64-bit ready
Multi-core (4 total)
Hyper-threaded (8 total)

Title: Re: CPU-Z only shows 2 cores?
Post by: george on July 12, 2011, 03:01:14 am

Quote from: F5BJR on July 12, 2011, 02:49:43 am

*
Hum ... a phantom has exchanged your CPU !!

Remove the CPU Cooler and look the Intel number

Windows can also identify the CPU :

--> Panel Config you have the CPU number ... Intel Core xxxx

or

--> devmgmt.msc --> Processor --> xxx * processors yyy zzz to abcd speed

For me i have :

--> Panel Config  i have  ... Intel Core i7 CPU

and :

--> devmgmt.msc --> Processor --> 8 * processors i7 CPU 930 to 2.80 Ghz

also simple : Windows Taskmgr --> Performance and --> i have 8 proccess  with my I7-930

With Open HardWare Monitor find 4 * CPU Cores

Pierre

* Belarc Advisor report for me :

Processor
2,80 gigahertz Intel Core i7 930
32 kilobyte primary memory cache
8192 kilobyte secondary memory cache
64-bit ready
Multi-core (4 total)
Hyper-threaded (8 total)

Only 2 show up. My windows performance score went way down.
I don't over clock by the way.

Title: Re: CPU-Z only shows 2 cores?
Post by: F5BJR on July 12, 2011, 03:08:12 am

*
Load Bios with Optimised BIOS Defaults

Also reinstall old BIOS and test

Pierre

Title: Re: CPU-Z only shows 2 cores?
Post by: george on July 12, 2011, 03:32:02 am

Quote from: F5BJR on July 12, 2011, 03:08:12 am

*
Load Bios with Optimised BIOS Defaults

Also reinstall old BIOS and test

Pierre

I could try that.
I did flash it awhile back then used optimized defaults before tweeking. Could have gotten corrupted I guess.

Title: Re: CPU-Z only shows 2 cores?
Post by: george on July 12, 2011, 04:43:20 am

Quote from: F5BJR on July 12, 2011, 03:08:12 am

*
Load Bios with Optimised BIOS Defaults

Also reinstall old BIOS and test

Pierre

Loaded with the latest BIOS (F9) and used optimized defaults.

Still just shows 2 cores.

Title: Re: CPU-Z only shows 2 cores?
Post by: george on July 12, 2011, 05:48:20 am

Quote from: george on July 12, 2011, 04:43:20 am

Quote from: F5BJR on July 12, 2011, 03:08:12 am

*
Load Bios with Optimised BIOS Defaults

Also reinstall old BIOS and test

Pierre

Loaded with the latest BIOS (F9) and used optimized defaults.

Still just shows 2 cores.

Problem is resolved. I went into msconfig under the general tab, and used the first radio button "Normal startup".

A few days ago I read an article to speed up the boot time. One item was to use 4 processers instead of one, another was to skip the loading of the GUI splash screen. There may have been another.
Also I've been cutting down on startup services so I put those back.

Now I have 4 processes in CPU-Z and my windows performance scores are high again.
One other point, I had ram with a special profile to run at 1600 Mhz. I left that at the BIOS default and the windows assesment scores for memory went unchanged even though running at 1333 Mhz with looser timings.

Thanks for the input F5BJR as I wouldn't have found out without reinstalling the BIOS and looking at things there.  ;D