4GB Corsair XMS2 800

24inchgamer · 13 Nov 2007 at 23:18

Hi Guys,
Ive been told by another member that I cant run my memory between 723 and 838 mhz as it wont post, and hes right in saying that because I just could not post at 800mhz (I have a gigabye n650 ds4 board).
Im currently at 667. What would you guys recco I run this memory at, and what should I change my timings to?
Cheers for your help

helmutcheese · 13 Nov 2007 at 23:39

Its prob not the Memory its a FSB hole in your Mobo's Bios.

24inchgamer · 13 Nov 2007 at 23:40

helmutcheese said:
Its prob not the Memory its a FSB hole in your Mobo's Bios.

Im not sure im following, care to explain please mate

Cob · 14 Nov 2007 at 00:01

Are you running the latest BIOS? I *think* someone said the issue had been fixed in the ASUS 650i board with a newish BIOS. No idea if Gigabyte ever got around to sorting it out.

24inchgamer · 14 Nov 2007 at 00:05

Cob said:
Are you running the latest BIOS? I *think* someone said the issue had been fixed in the ASUS 650i board with a newish BIOS. No idea if Gigabyte ever got around to sorting it out.

Hi Cob, I checked and it is the latest F7 bios.
It certainly wont post at 800mhz, Ive got it at 667, I dont know what to try next, maybe 700 :S

helmutcheese · 14 Nov 2007 at 00:14

24inchgamer said:
Im not sure im following, care to explain please mate

The newer Mobos esp Nvidia 650/680's have like holes in bios, where FSB/Memory wont run, you can run below or above it though.

I dont know enough about your actual Mobo brand/Model/Bios though.

Cob · 14 Nov 2007 at 00:19

24inchgamer said:
Hi Cob, I checked and it is the latest F7 bios.
It certainly wont post at 800mhz, Ive got it at 667, I dont know what to try next, maybe 700 :S

I would stick it on 720mhz and see if you can lower the timings a little (I assume they're meant to be 5-5-5-15 @800mhz).

24inchgamer · 14 Nov 2007 at 14:09

Cob said:
I would stick it on 720mhz and see if you can lower the timings a little (I assume they're meant to be 5-5-5-15 @800mhz).

Thanks cob, ill give that a go and keep you posted.
Any help with this? I havent had any responses

http://forums.overclockers.co.uk/showthread.php?t=17803235

Cob · 14 Nov 2007 at 17:18

I have no hands-on experience with the n650i chipset, but try upping the-

NB/HT link voltage
FSB Voltage
Southbridge Voltage

by 0.1v each and see how you get on. If that doesn't work then set the CPU Voltage to 1.375v.

24inchgamer · 15 Nov 2007 at 14:34

Cob said:
I have no hands-on experience with the n650i chipset, but try upping the-

NB/HT link voltage
FSB Voltage
Southbridge Voltage

by 0.1v each and see how you get on. If that doesn't work then set the CPU Voltage to 1.375v.

Thanks COB, it posted at 720 on the memory, do you think I can go higher :S

Ill give those settings a try for the OC, shall I just leave the others on auto?