4x1g on Nforce4 impossible ?!

[-=DouglasteR=-]

Hi, i have bought 2 sets of Gskill 2x1g PC4000 "HZ" and tried to put the 4 gigs,the pc boot but it do BSOD's and crash's in Windows or even in the bios !

There some Special Bios or some special fix for this, i cant believe that nforce 4 cant handle 4 gigs, even on DDR400 in 2t !? i cant believe !!!

Only 2 gigs work like charm


And YES the option in the bios that maps 4 gigs is enable

Thanks for the help !

Here are my rig

Fx 55
DFi ultra D
X850 XTPE
OCZ 600w

[ic3m4n2005]

Try DDR 333 and see if it helps.

[alexio]

It should be able to work. But if you are using a 32bit OS it can only use upto 3GB of the 4GB of memory. However it should boot fine with 4GB. This is the limitation of a 32bit OS, I don't know exactly why.

I can't help you with the instability problem. I guess you should first test the DIMMs one at a time. If DDR400 doesn't work I think you should loosen the timings as much as possible, and then tighten them untill they are not stable anymore. One tip is to put the worst overclocking DIMMs in slot 1 and 2 and the best in the slots further from the cpu.

[AndreYang]

DFI Venus and Expert can run DDR 400 1GBX4 1T.

MB: DFI SLI-DR Expert
CPU: Opteron 146
Ram: Crucial DDR500 1G*4

[Cooper]

Douglaster if yr FX55 is ClawHammer than it`s not possible to run 4x1G sticks at DDR400 - use DDR333. If it`s new E revision than it does have weak mem controller and must be replaced with warranty

[-=DouglasteR=-]

Douglaster if yr FX55 is ClawHammer than it`s not possible to run 4x1G sticks at DDR400 - use DDR333. If it`s new E revision than it does have weak mem controller and must be replaced with warranty

And whit Opt 146 venus on normal Ultra D nf4 ?! I will switch processor and see if it works !

Thanks for the help guys !!

[Kunaak]

put 3 sticks in, and boot up, then do your bios settings and remember to enable 2T, and then exit bios, power down, put 4th stick in.

that should do it.

[fareastgq]

yep, just make sure your running 2T

[-=DouglasteR=-]

All normal settings are done, 2t, 333 and all other timings stuff


One thing i notice is when i put all 4 sticks, the Vmem increases, even if i put 2.6, it starts at 2.73 ! Very wierd indeed !

[Vincentvega18]

DFI Venus and Expert can run DDR 400 1GBX4 1T.

MB: DFI SLI-DR Expert
CPU: Opteron 146
Ram: Crucial DDR500 1G*4

WOW, not only 4 gig 1t but also 2-2-2..............

[-=DouglasteR=-]

WOW, not only 4 gig 1t but also 2-2-2..............

Ok, some update, its appear the problem is exactly the revision..

Ill try a Opt 146 venus this week and see if it works like above

[WesM63]

It should be able to work. But if you are using a 32bit OS it can only use upto 3GB of the 4GB of memory. However it should boot fine with 4GB. This is the limitation of a 32bit OS, I don't know exactly why.

Its not the limitation of 32bit OS. The limitation is XP can only address up to 3gb of memory. (XP-64 may be able to address more, that I do not know) Server 2003 can address up to 32gb of memory in 32bit mode. (depending on the version.. http://www.microsoft.com/windowsserv...s/default.mspx)

Good luck -=DouglasteR=-. My friend is running 3gb on his A64 Winchester machine.

[STEvil]

XP SP1 can use 4gb with Physical Page Extention enabled in the bios (I think this was the setting anyways).

XP SP2 cannot.

[-=DouglasteR=-]

XP SP1 can use 4gb with Physical Page Extention enabled in the bios (I think this was the setting anyways).

XP SP2 cannot.

Why not ?! Its some registry variable ?! I CANT believe XP wont map 4gigs of ram ! OMFG thats unbelievable !!

Ill try this week put only 3 sticks !

Thanks for the help guys