ASUS P6T SE - 6GB turns into 4GB !

Ordered an i7 920 D0, an ASUS P6T SE and 6GB of XMS3 DDR1600 RAM.

The motherboard is driving me crazy !

I boot the motheboard with the memory, at stock settings ( no OC of any kind ) and it shows me 6GB. I run MemTest and let it do a run and reboot - it shows me 4GB - in BIOS or MemTest.

I shut it down for a few minutes & reboot and it is back to 6GB

Tried two different coolers - Intel Stock cooler and the AC Freezer 7: same behaviour.

Inspected CPU socket for damage: no pins damaged or bent.

Reseated CPU: same behaviour

Checked each 2GB stick individually: they seem to pass

Rotated each 2GB stick: same behaviour

Can anyone tell if they have faced similar problems on the P6T SE ? What do you guys think it is ? Motherboard or CPU ?

Putting the ram in the correct slots? Checked for a motherboard BIOS update?

Have you browsed a bit to see if this is quite common?


Are the temps or voltages being used safe for that motherboard?

and as said above about bios updates and checking your motherboard manual to make suer their in the correct slots is a must.

Good luck

Everything is on stock, the memory is running at DDR3-1333MHz. Also, am installing RAM in orange colored sockets ( DIMM A1, B1 and C1 )


Okays, updated BIOS from 0403 to 0504. Same behaviour.

But here is some strange behaviour. Tested the sticks individually. But then after a run ( > 10 min ) with MemTest, one of the sticks hangs on re-boot. That's right ... it passes MemTest but hangs on reboot ( and only on reboot ), in any slot.

Looks like time for an RMA on the memory :(

Urgh, unlucky, probably one in a thousand chance you ended up with that.

Hopefully you\'ll get it sorted ASAP. But hey, at least you managed to identifyed the problem, saves you some time instead of shipping everything off.

Good luck

It might not be. PM me privately Harshw with any rma details you\'ve been given please prior to sending back the memory for testing.

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Originally Posted by PeteG@Scan

It might not be. PM me privately Harshw with any rma details you've been given please prior to sending back the memory for testing.

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PM sent