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Asus P6T Delux ram issues

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First, while I am new to this, I am not so new to building my own computers. I just purchased an Asus P6T Delux motherboard, with an I7. Simple enough. It does not matter if I follow the recommended mem installation, when I have all 6 banks filled only 8gigs are show in the bios. If I remove one black DDR3 from DIMM A2 (BLACK), bios now sees 10gigs. Replace A2 again, and I get 8gigs. I have tried several configurations, and I still have the same problem. Yes I flashed the bios, so I am running the newest bios. Now here is the crazy part. If I check my little utility CPU-Z, it shows 12 gigs when all the banks are full, but the bios then shows 8gigs. Yes all of the ram has been tested, and they all work fine.

Memory Type: Dual Channel DDR3

Memory Speed: 1333MHz PC10600

Memory CAS Latency: 7-7-7-20

I know several people have had the same problem with Asus P6T Delux. I love the board. I have always used Asus with no problems what so ever. If this is a know problem, should I just purchase the Asus Rampage? You thoughts please, and be kind.

Thanks.

Add a reply

If your program sees all of your ram, and Windows Vista sees all of your ram. Where is the problem. the x58 MB are best used with three banks of ram not four. a Latency issue.

Message quoted 1 times
Message edited by ataliaa1 on 03-02-2009 at 03:50:19 AM

Reply to ataliaa1

ataliaa1 wrote :

If your program sees all of your ram, and Windows Vista sees all of your ram. Where is the problem. the x58 MB are best used with three banks of ram not four. a Latency issue.

That's what I thought at first. However, all the banks are filled. So it's not a bank config issue. All the memory has been tested-no issues there. So starting with the bios. When all banks are filled, the bios does not see the 12 gigs. In fact, the bios reads only 8 gigs. When I enter the OS (Vista 64x) The Os also displays 8gigs. Now when I use the little utility, CPU-Z does in fact show the 12 gigs. Now, if it were a Latency issue, I should have that problem with no matter if I have 3 banks filled or two. All memory is the same as noted. Now I have been able to get the bios to recognize upto 10gigs. But with I add the final bank, it subtracts, and brings it back to eight. Eight, not ten. How strange is that? I will go back to check sttings, but this issue happens with default settings with no OC.

Thanks.

Reply to beachbum

Sounds Like BIOS Flash needed, but I would not fill 4 banks with DDR3 Ram. with 4 banks all the reviews say you loose speed due to latency issue. just a side note.

Your problem sounds like bios flash check MotherBoards website.

Message quoted 1 times

Reply to ataliaa1

I had the same problem, which is apparently common with the P6T, I just RMA'd it. BIOS update did not help.

Message quoted 1 times

Reply to caniba

caniba wrote :

I had the same problem, which is apparently common with the P6T, I just RMA'd it. BIOS update did not help.

OHhhhhh Mannn!!!! I just ordered this MB too. From IBuyPower. hope the don't let system out with that problem. Who did you get your system from?

?

Reply to ataliaa1

If you bought a complete system then it should have been tested and will be fine.

I built it with parts from New Egg.

Reply to caniba

ataliaa1 wrote :

Sounds Like BIOS Flash needed, but I would not fill 4 banks with DDR3 Ram. with 4 banks all the reviews say you loose speed due to latency issue. just a side note.

Your problem sounds like bios flash check MotherBoards website.

The P6T deluxe should run 12 gigs just fine, and there's only a minor speed hit. I'm running 12 gigs of DDR3-1600 (which by the way is 6 banks, not 4), and it runs great.

What BIOS version do you have?

Message edited by cjl on 03-04-2009 at 08:07:22 AM

------------------------------ Asus P6T deluxe
i7 965 @ 4.2GHz (200*21), 1.384V
12GB Corsair Dominator DDR3-1600 CAS 7
Reply to cjl

I just bought the exact same setup. P6T Deluxe V2 mobo with i7 processor and 12 gigs of ram...BUT only shows 8 gigs in bios and 8 gigs in Vista 64. Doesn't seem to be any final answer to this thread? What did you do to resolve this? Thanks!

P.S. One other thing I've found while researching this issue is that it may be the speed of our memory modules.

"Due to Intel spec definition, XPM DIMMs and DDR-3 1600 are supported for one DIMM per channel only."

My memory modules are 1600mhz memory modules, what about yours? Should we downgrade memory to 1333mhz?

Message edited by pursellitsystems on 04-23-2009 at 07:12:47 PM

Reply to pursellitsystems

hi

I have the same chip/mobo/6 slots filled with 2gb ram and have exactly the same problem! 12 gig shows up in CPUz, but only 8 in bios and Vista 64 - however, I am running 1333MHz ram (Corsair CM3X2G1333C9) already, so that doesn't help.

Logged on to Asus and updated the bios, and after booting into it I can sometimes get 10 gb to show up - but a straight boot into Windows always shows 8.

The mobo shows the blue light under the ram slots, indicating no problem.

Changing the bios voltage settings only seem to make the system bluescreen a lot more - since I reset everything abck to default auto it runs stable.

Been on Corsairs forum - no clear answers there either.

Might have to tackle Asus, or the vendors, I guess. I'd hate all the hassle of replacing the mobo.

Help! Driving me nuts! Wasted too much time on this!
Any ideas out there?

Mac

Message quoted 1 times

Reply to Macxs

CJL: Wait I did some research and apparently based on my sources it says that the asus p6t only supprts ddr3 1333mhz ram...not any faster, so how are you running 1600mhz ram?

Reply to blackhawk1928

I too am having the same problem. I have an Asus P6T6 WS Revolution, with 12GB installed RAM, with only 8 showing up in the BIOS and Windows, but 12 in CPU-Z. Someone should post a solution for this catastrophe

Reply to acdp

I am facing the same problem. I bought this board two days ago in Hong Kong. I returned my new Corsair TR3X6G1666C9 x 2 and change to TR3X6G1333C9 x 2 that is Qualified Vendor List (QVL) to run for two set of Triple-channel. I tried to plug 6G ram (A1, B1, C1), but bios still only see 4G ram. (It should be from A1 and C1 slot). I haven't tired to plug another 6G ram into my MB coz I am sure it won't work. I can see 6G ram from cpu-z either.......... Anyone can help???? It is killing me!

Reply to anson1999

I had the exact same problem. I was told that it was some kind of timing issue from a computer tech. that I know. It would show up as 8gig in bios & 8gig in system info. I also downloaded cpu-z and it showed 12gig just like you, I also downloaded the latest bios, which didn't help. So the next day I pulled all the memory out, and then installed two sticks into the orange slots & booted up and bios showed 4gigs and system info showed 4gigs. I then continued adding one stick at a time and low and behold it kept showing the correct size in bios and system info., I done this till all 6 banks was full. My bios now shows 12gig and system info shows 12gig. I did notice that my corsair 1333 memory is now running at 1066. If you read the manual it states that the system may run your memory at a slower speed. I just wonder if I increase the voltage if it will run my memory at the correct speeed. Hope this helps.

LD

Reply to cadman_ld

Same issue here with a P6T SE mobo. I'm puzzled why Asus hasn't addressed this so far.

Reply to sicofante

I had the same problem as well. I purchased 7 of these mb's two had this problem, and I was using the exact same setup in each one. I talked with ASUS, they are aware of the problem. I returned the 2 and the new ones work perfectly.
I will continue purchasing this board, simply because it is the best right now.

Macxs wrote :

Reply to nightdiver

Ya asus's x58 motherboards are having problems with 12gb RAM. I called asus they said my cpu's memory controller is faulty. RAMed Cpu. Still 8gb. Check RMA with friends computer. RAM fine. RMA motherboard. Got new motherboard. Still 8gb. Talk to newegg and got a full refund. Bought a EVGA x58 3X SLI. Happy as ever.

Long story short ASUS's x58 motherboards have problems

As to CPU-s showing 12gb. Don't believe it. The chip on the RAM says it's 2gb RAM and CPU-Z believes that. It doesn't actually test the RAM to make sure its 2gb each. Its true. Bought some really cheap RAM before. CPU-Z said it was 1gb. It really was 256mb. I got ripped off.

Reply to qianlin

So, has anybody been able to resolve this issue ??? I just bought a P6t and of course I have the same issue as everyone else. Only 8GB of 12 is detected in windows.

------------------------------ Core i7 920 @ 4.0Ghz - Asus P6T - 12GB Corsair XMS 3 - 2X ATI 58701GB Crossfire- Zalman 850W - X-FI Fatality Gamer Pro - Xigmatek Thor's Hammer - Raptor X 150 - WD Black 1TB - Super Talent 32GB SSD - Cosmos S Case w/side window + 8X 120mm fans - BD Rom Dr
Reply to annisman

just return it. problem solved. buy a gigabyte or evga x58 motherboard

Message edited by qianlin on 08-27-2009 at 11:14:08 PM

Reply to qianlin

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Asus P6T Delux ram issues

Forum Motherboards & Memory : Asus - Asus P6T Delux ram issues