I can´t get my Asus P6T Deluxe V2 to work with 12gb ram?

CPU-Z 1.51 report file

Processor(s)
Number of processors 1
Number of cores 4 per processor
Number of threads 8 per processor
Name Intel Core i7 920
Code Name Bloomfield
Specification Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
Package Socket 1366 LGA
Family/Model/Stepping 6.A.4
Extended Family/Model 6.1A
Core Stepping C0/C1
Technology 45 nm
Core Speed 1603.6 MHz
Multiplier x Bus speed 12.0 x 133.6 MHz
Rated Bus speed 2405.4 MHz
Stock frequency 2666 MHz
Instruction sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T
L1 Data cache (per processor) 4 x 32 KBytes, 8-way set associative, 64-byte line size
L1 Instruction cache (per processor) 4 x 32 KBytes, 4-way set associative, 64-byte line size
L2 cache (per processor) 4 x 256 KBytes, 8-way set associative, 64-byte line size
L3 cache (per processor) 8 MBytes, 16-way set associative, 64-byte line size
Chipset & Memory
Northbridge Intel X58 rev. 12
Southbridge Intel 82801JR (ICH10R) rev. 00
Graphic Interface PCI-Express
PCI-E Link Width x16
PCI-E Max Link Width x16
Memory Type DDR3
Memory Size 12288 MBytes
Memory Frequency 534.5 MHz (2:8)
CAS# Latency (tCL) 8.0 clocks
RAS# to CAS# (tRCD) 8 clocks
RAS# Precharge (tRP) 8 clocks
Cycle Time (tRAS) 20 clocks
Command Rate (CR) 2T
System
System Manufacturer System manufacturer
System Name System Product Name
System S/N System Serial Number
Mainboard Vendor ASUSTeK Computer INC.
Mainboard Model P6T DELUXE V2
BIOS Vendor American Megatrends Inc.
BIOS Version 0406
BIOS Date 04/24/2009
Memory SPD
Module 1 DDR3, PC3-10700H (667 MHz), 2048 MBytes, Corsair
Module 2 DDR3, PC3-10700H (667 MHz), 2048 MBytes, Corsair
Module 3 DDR3, PC3-10700H (667 MHz), 2048 MBytes, Corsair
Module 4 DDR3, PC3-10700H (667 MHz), 2048 MBytes, Corsair
Module 5 DDR3, PC3-10700H (667 MHz), 2048 MBytes, Corsair
Module 6 DDR3, PC3-10700H (667 MHz), 2048 MBytes, Corsair
Software
Windows Version Microsoft Windows XP x64 Professional Service Pack 2 (Build 3790)
DirectX Version 9.0c

I think it's should be your memory issue. I have the same board with 2 set of Corsair 6GB (Total of 12GB) and i can see 12GB both in the windows and bios. My memory part # is TR3X6G1866C7GT

I would contact ASUS.

If your using tri channel RAM, which it looks like you are. They need to be in the correct slots. The first kit in DIMM A1, B1, C1. Then the second kit in A2, B2, C2. If you've read your motherboard mannual carefully you'd know this.

| | | | | | | | | | | |
A2 A1 B2 B1 C2 C1

If you look in CPU-Z, does it show all of the DIMMs properly? Do they all show up during POST? If so, it is likely a windows issue, not a hardware issue.

i think it's a ram issue.Check all your ram and see whether or not your pc could boot up
you could try 3 first on slot 2,4,6 then 1,3,5
i am using p6t deluxe v2 too and i used to have ram problem too.The problems were solved after i changed the psu and the three sticks of ram(one of them died)

P.S
Standard DDR3 Voltage=1.64v
you probaly need more to maintain stability in such a large amount of ram
qpi also

Hello; after3ds. I can't remember were I read this, but if your computer will run one memory stick in what ever slot you said 2 or 3 and it reports it correctly; then use the one stick and " UPGRADE YOUR BIOS". Then install all of your memory and see if it reports correctly. ASUS "support" or your "manual" should reference that issue.

I have the same issue with corsair HX3X12G1600C9G. Looks like mother board issue.
Asus P6T Delux user guide on page 2-16 quotes " According to intel spec definition, DDR3-1600 is supported for one DIMM per channel only. ASUS exclusively provides two DDR3-1600 DIMM for each memory channel." I beleive ASUS could not get it quite right.