Can't mix pair of 2GB with a pair of 4GB?

[arbrickell]

Hey all.

I had this in my computer..

G.SKILL DDR2-1066 PC2-8500 1GBx2
CL5-5-5-15 2.0v-2.1v

Today I ADDED..

G.SKILL DDR2-1066 PC2-8500 2GBx2
CL5-5-5-15 2.0v-2.1v

Powered PC on.........Loading Windows.........Blue screen.

Took Out the 1GBx2 and booted fine.

Can you not mix a 2GB pair with a 4GB pair?

I've tried putting them in different ways as well

1-2-1-2
2-1-2-1
2-2-1-1
1-1-2-2
1-2-2-1
2-1-1-2

No option above booted.

1-1-0-0 Boots
2-2-0-0 Boots
0-0-1-1 Boots
0-0-2-2 Boots

So.. What do I do? B/c I can't return the 1GBx2 now.

[GSKILL TECH]

You will need to raise NB Voltage to 1.40V. The memory controller may be overloaded.

Thank you
GSKILL TECH

[arbrickell]

Like in BIOS? I checked the voltage and theyre set at 1.8 automatically.

[GSKILL TECH]

Yes, in the voltage section (near DRAM Voltage), there is another option for NB Voltage and you will want to set that to 1.40V to stabilize the memory controller. With 4 modules, the memory controller can be overloaded thus causing instability.

Thank you
GSKILL TECH