Why is Windows Task Manager giving different specs than CPU-Z??

[McDohl]

CPU-Z: 12GB, 803.4mhz.
Windows Task Manager: 8GB (Right column 10.0GB "Unknown"), 667mhz.

Why the inconsistency? Am I still fully utilizing all 12GB of ram @ 803.4mhz despite what is showing in WTM? And I'm aware that I lose dual-channel performance by running 3 sticks of 4GB - that's perfectly fine.

Ram:
G. Skill Ripjaws: 1600 | 2x4GB | CL 9,9,9,24 | 1.5v
Crucial Ballistix: 1600 | 1x4GB | CL 9,9,9,24 | 1.5v

Motherboard:
Gigabyte GA-78LMT-USB3

McDohl

 

[junkeymonkey]

try another cpu-z some revisions of it may not detect things on certain builds

http://www.cpuid.com/softwares/cpu-z/versions-history.html

also with Gpu-z some revisions may show more info then others you just got to find the one that works best for your build

 

[gskill support]

Task Manager does not show the actual operating frequency.

 

[Tradesman1]

CPU-Z gives true freq (take true freq x 2 = effective (800 x 2 =1600). Task manager is showing the SPD default boot value of the DRAM (1333)

 

[McDohl]

Task Manager does not show the actual operating frequency.

Thanks for answering. Why do you think it's showing 8GB of ram in the left column, and "10GB unknown" in the right, but I'm supposed to have 12GB? It's correctly stated in CPU-Z.

CPU-Z gives true freq (take true freq x 2 = effective (800 x 2 =1600). Task manager is showing the SPD default boot value of the DRAM (1333)

That makes sense, thanks for the explanation. Why do you think it's showing 8GB of ram in the left column, and "10GB unknown" in the right, but I'm supposed to have 12GB? It's correctly stated in CPU-Z.

 

[Tradesman1]

The Unknown might be the actual stick type/brand it's showing 10GB as 2GB is hardware reserved for something, might be Graphics (shows the Hardware reserved at the bottom)