8Gig RAM installed, but only 3.99Gig 'available. '

I opperating 64-Bit Windows 7 Professional with Intel i7 860 1156 Core and 2 sets of "CORSAIR XMS3 4 GB (2 x 2 GB) 240 - Pin DDR3 SDRAM DDR3 1600 (PC3 12800) desktop CMX4GX3M2A1600C8 memory model" for a total of 8gig, but Windows says that 3.99gig is usable.

It is said:

"Processor: Intel Core i7 CPU 860 to 2.80 GHz 2.80 GHz.
Installed memory (RAM live): 8,00 (3.99 GB usable) GB
"System type: 64-bit operating system.

parameters of msconfig to limit memory were studied and found to not be have been checked...

any ideas?

Hello chillinbro07,

Thanks for posting on the Microsoft answers Forums.

I did a bit of research as part of the supported memory card mother EVGA for DD3-1600:

 

DDR3-1600
APOGEE AU1G733-16GH905
APOGEE AU2G733-16GH905
Kingston KHX12800D3LLK3/3GX 1 GB
Kingston KHX13000D3LLK2/2GX 1 GB
CORSAIR TR3X3G1600C8D/ver2.1 1 GB
Ver4.1-CM3X1G1600C8D4/CORSAIR 1 GB
CORSAIR CMD4GX3M2A1600C8 Ver5.2
CORSAIR CMX4GX3M2A1600C9 Ver8.1
CORSAIR CMD8GX3M4A1600C8 Ver3.1
CORSAIR CMX8GX3M4A1600C9 Ver9.1
CORSAIR TR3X6G1600C8D/ver2.1 2 GB
2 GB CORSAIR TR3X6G1600C9
G.SKILL F3-12800CL9D-2GBNQ 1 GB
G.SKILL F3-12800CL7D-4GBPI 2 GB
G.SKILL F3-12800CL7D-4GBRH
Kingston KHX1600C8D3K2/4GX
PQI 2 GB MFADR501PA7001
OCZ 2 GB OCZ3X1600LV6GK
OCZ3P1600LV6GK, OCZ 2 GB
OCZ 2 GB OCZ3G1600LV6GK

Your memory is not listed.  Let me suggest to do a clean install with your 4gig of RAM, then after installing the operating system, add the extra 4gig.  See if it works.

I read somewhere that someone had success in re-sitting their CPU on the motherboard.  If you are comfortable doing this, you can try it.  Otherwise, I would do the same type of memory that they have been reported as compatible for their mother.

Kind regards

Edgar
Microsoft Answers Support Engineer
Visit our Microsoft answers feedback Forum and let us know what you think.

Tags: Windows

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