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

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May 13, 2009 3:30:38 PM

First time i started my new computer bios show 12gb but windows (XP-64bit) only
8gb? But the second time I checked bios it only show 8gb? I have tested "CPU-Z"
and it show 12gb!?

Please I need all help I can get!

Thank you!
May 13, 2009 3:34:53 PM

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
May 13, 2009 3:37:02 PM

My computer components are:

Intel Core I7

Asus P6T Deluxe V2

Corsair XMS3 Twin3X DDR3 PC10600/1333MHz CL9 (TR3X6G1333C9) 2kit 2x3gb

XP-64bit
Related resources
May 13, 2009 4:55:20 PM

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
May 13, 2009 4:59:14 PM

kevinoc said:
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



What shall I do to fix it? I have tested stick by stick and then I can see 2gb in bios on every stick but only from slot 4!? If I try slot 1-3 computer doesn´t start?

When I try with only 6gb bios only show 4gb!?
May 13, 2009 6:27:32 PM

I would contact ASUS.
May 13, 2009 6:42:46 PM

Jim_L9 said:
I would contact ASUS.



I have already done that and I have tried everything.
May 13, 2009 7:58:11 PM

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
May 14, 2009 8:17:56 AM

nickhoff said:
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



I have them in correct slots. First kit of 2x3gb A1, B1, C1 second kit of 2x3gb A2, B2, C2
a b V Motherboard
May 14, 2009 8:38:44 AM

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.
May 14, 2009 8:46:42 AM

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



I have tested Vista ultimate 64 and it´s the same problem så I don´t think it´s a windows problem.


May 14, 2009 9:42:41 AM

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)
May 14, 2009 10:22:31 AM

after3ds said:
I have tested Vista ultimate 64 and it´s the same problem så I don´t think it´s a windows problem.


Best two guesses... One, its a power setting (in BIOS) for your RAM. Make sure that you are running @ MFG's recommended settings. Two, you have a bad DIMM slot (or two).
May 14, 2009 12:56:15 PM

croc said:
Best two guesses... One, its a power setting (in BIOS) for your RAM. Make sure that you are running @ MFG's recommended settings. Two, you have a bad DIMM slot (or two).

P.S
Standard DDR3 Voltage=1.64v
you probaly need more to maintain stability in such a large amount of ram
qpi also
a b V Motherboard
May 15, 2009 12:59:46 AM

I wouldn't think that you would have to up the memory voltage - the QPI may need to be raised a bit though. On mine, the required memory voltage doesn't change between 6 and 12 GB, but the required QPI voltage goes up by a bit (1.26 to 1.31 IIRC)
May 15, 2009 2:19:58 AM

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.
Anonymous
a b V Motherboard
August 3, 2009 1:53:19 PM

I had this exact same issue. But I had an idea on how to remedy it for a while but was too lazy too try it out. Anyway, did it just this morning and it took nearly 10 minutes to finish but it works and now 12gb shows up no worries. So here is what I did.

Step#1
Remove all the memory from the black slots. Leave the orange slots occupied

Step#2
Boot through bios to confirm you have just 6gb

Step#3
Replace 1 stick into the black slot nearest the cpu and reboot to confirm 8gb

Step #4
Replace 1 stick into next black slot nearest cpu and reboot again for 10gb

Step#5
Replace last stick into last slot for 12gb and reboot and smile.

I have my bios set to the slow boot tests. The one that counts the memory at a much slower rate. Don't know if you'll need that set or not.

If at any stage you don't get the right amount of memory from the bios try moving the stick you last put in, into a different slot. The chances of you actually needing to RMA either your sticks or your board are slim. Having to do both are VERY slim so I would recommend anyone having this issue try this first. It worked for me and I got the idea off someone else so it must have worked for someone else.

Oh, and aside from changing the setting to run at 1600, I haven't touched ANY memory or cpu settings. They are all on auto for the time being.
September 6, 2009 1:48:11 PM

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. :cry: 
February 17, 2010 4:35:43 AM

I have a P6T Deluxe v2 also, and recently added my second 6 gig kit of ddr3 trichannel. Its all Patriot but wait: my first kit was PVT36G1333ELK, the second kit is PVT36G1333LLK. There is a difference but should it be causing me to only see 8 of my 12 gigs of ram? This issue is frustrating. Any and all suggestions welcome. This issue has been keeping me busy for a few days it seems. I really think it happened because my new ram is another 1333 model, with different clocks. I am really looking for any and all advice here.
February 18, 2010 12:39:40 PM

LOL what is this with that damn motherboard, i think we should all send isue problems to ASUS ans let them upgrade there bios,daamn i just gave more than 200 euro for smt that is so unstable, i have everithing in AUTO and the damn motherboard says that i have OverVoltage and it freezes up untill i make the processor voltage to 1,30,daamn but i dont habve any problem with showing my 3 kit RAM at 1800 mhz
Anonymous
a b V Motherboard
May 14, 2010 2:57:22 AM

ryanhell078 said:
I have a P6T Deluxe v2 also, and recently added my second 6 gig kit of ddr3 trichannel. Its all Patriot but wait: my first kit was PVT36G1333ELK, the second kit is PVT36G1333LLK. There is a difference but should it be causing me to only see 8 of my 12 gigs of ram? This issue is frustrating. Any and all suggestions welcome. This issue has been keeping me busy for a few days it seems. I really think it happened because my new ram is another 1333 model, with different clocks. I am really looking for any and all advice here.


I have the exact same problem with the exact same Ram and MB
i have tried a lot of things and not fixed the problem yes
September 23, 2010 4:43:52 AM

Guys I had the same problem but when checking to make sure that each stick is good and that each dimm slot should be able to post even with 1 stick in each dimm slot I found my C1 n C2 would not post but my sticks were ok. Everything was good used 2 different kits of TR3X6G1600C8D and 1 day it saw only 8gigs and thats when I discovered the dead dimm slots. Contact Asus and had the MB rma'd as well as the cpu. Didn't want to take the chance of having a bad chip too. Now got the rma'd MB and the chip installed went great then as I feared again windows n task saw 8gigs wtf??? Then rebooted went into bios and bios saw 12? WTF? Checked all my settings and timings and then F10. Checked windows n task and they see 12gigs?? :pfff:  Currently I have taken 1 kit out to avoid having the same problem as I did and going thru asus sucks ballz. They have 1 of the best products but when you have to go rma something its hell. Now I have a stable overclock 4ghz @ 1.33v with 6gigs of memory. Still like to get the other kit in and have 12gig but the hassle if I have to go thru asus is pathetic. I will continue to research and hopefully when I do decide to install the 2nd kit I would have an answer. Good luck guys!! :bounce: 
a b Ĉ ASUS
a b V Motherboard
September 23, 2010 10:25:13 PM

This topic has been closed by Mousemonkey
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