Overclocking P5B with 4 dimms - impossible?

[ZozZoz]

OK. I bought an extra gig of ram, (667 mhz Corsair) which now makes it a total of 2 gigabytes composed of 4 sticks.

Upping the FSB to the usual 333 for a slight overclock of my E6300, I can't even post (let alone boot). Asus automated recovery (or whatever its called) doesn't work. I had to clear the CMOS with the appropriate jumper.

Setting manual RAM timings and freq. didn't alleviate the problem.
What's surprising - I flashed the latest BIOS version (1102) which according to relase notes - supports 4 dimms.

Any ideas/ suggestions?

 

[jhalf]

voltages?

 

[stefx]

remove the extra ram and see if it goes back to normal.

are all four stick identical (brand, model, speed, latency) ?

 

[ZozZoz]

It does go back to normal. All ram is from Corsair, identical in every aspect.
What bugs me is: BIOS version is supposed to support 4 dimms, yet I should forget about overclocking.

Setting RAM voltages to Auto - I see BIOS running it at 1.8 (which is not 1.9 specified by Corsair). Manual setting to 1.9 does not change anything.

 

[Flying-Q]

I got the same thing last year, oddly enough with Corsair too.

All I needed to do was loosen the timings a little bit and it flew without needing to raise the voltages. Although the RAM became more 'latent' the increased quantity made the machine faster and more responsive overall.

Q

 

[ZozZoz]

Oh man, the timings are already bad enough .
Its the VS series ram, smth. like 5-5-5-15.

well, its a slot-filler for now. I'll buy 2x1gb XMS series next week.

 

[Flying-Q]

Grin - mine was XMS !

Q