Originally posted by: Cadaver
OK, now I can post with some worthwhile numbers (old Gigabyte motherboard was junk)-
Asus A7N8X deluxe (v2.0)
190 x 12
T'bred 2600+ (266MHz version) @ 2280MHz.
Can't seem to get stable at 200MHz or above. RAM is Corsair XMS Twin 256MB PC3200 (times 2), so that shouldn't be the issue. I suspect it's a processor or BIOS issue.
Originally posted by: shady06
your ram is pc2700, if you get high quality pc3200, you should be able to do 220-225 FSB
Originally posted by: MachoDonut
Originally posted by: Cadaver
OK, now I can post with some worthwhile numbers (old Gigabyte motherboard was junk)-
Asus A7N8X deluxe (v2.0)
190 x 12
T'bred 2600+ (266MHz version) @ 2280MHz.
Can't seem to get stable at 200MHz or above. RAM is Corsair XMS Twin 256MB PC3200 (times 2), so that shouldn't be the issue. I suspect it's a processor or BIOS issue.
What is you Vcore and Vdd?
Originally posted by: Cadaver
Originally posted by: MachoDonut
Originally posted by: Cadaver
OK, now I can post with some worthwhile numbers (old Gigabyte motherboard was junk)-
Asus A7N8X deluxe (v2.0)
190 x 12
T'bred 2600+ (266MHz version) @ 2280MHz.
Can't seem to get stable at 200MHz or above. RAM is Corsair XMS Twin 256MB PC3200 (times 2), so that shouldn't be the issue. I suspect it's a processor or BIOS issue.
What is you Vcore and Vdd?
I've tried Vcore up to 1.775. I've left the AGP (locked at 66MHz) and RAM voltage to standard.
Any higher voltages and I'd need to change my cooling system (right now using a Zalmon copper flower).
Right now running 185 x 12 (2220MHz) and seems stable so far (12hrs).
Originally posted by: MachoDonut
You should be able to hit 200mhz if you backed off your multiplier a bit and tried bumping up your Vdd. I don't have the Asus board, but I would think that there is a setting for chipset voltage in the BIOS.
Originally posted by: Cadaver
Originally posted by: MachoDonut
You should be able to hit 200mhz if you backed off your multiplier a bit and tried bumping up your Vdd. I don't have the Asus board, but I would think that there is a setting for chipset voltage in the BIOS.
I've got the version 2.0 "nforce 2 SPP Ultra 400MHz FSB" chipset (per sticker on box). It should be good to go at 200MHz w/out a chipset voltage mod for the 400MHz Bartons. I don't think there's a BIOS setting for Vdd anyway.
I think for what ever reason, my processor doesn't like FSBs that high (it is, afterall, the 266MHz version of the t'bred 2600+). More tweaking last night and I've settled on 184MHz FSB and a 12.5x multiplier for 2300.00MHz.
I think this will be fine. I doubt I'd notice another (effective) 32MHz on the bus anyway, and this combo gives me a nice, clean and stable 2.30GHz.
I told myself when I bought this board (just so I could overclock better than the useless Gigabyte I had) not to be mad if I couldn't hit exactly 200MHz on the FSB![]()
Edit - fixed messed-up UBB code
Originally posted by: pelikan
Originally posted by: Cadaver
Originally posted by: MachoDonut
You should be able to hit 200mhz if you backed off your multiplier a bit and tried bumping up your Vdd. I don't have the Asus board, but I would think that there is a setting for chipset voltage in the BIOS.
I've got the version 2.0 "nforce 2 SPP Ultra 400MHz FSB" chipset (per sticker on box). It should be good to go at 200MHz w/out a chipset voltage mod for the 400MHz Bartons. I don't think there's a BIOS setting for Vdd anyway.
I think for what ever reason, my processor doesn't like FSBs that high (it is, afterall, the 266MHz version of the t'bred 2600+). More tweaking last night and I've settled on 184MHz FSB and a 12.5x multiplier for 2300.00MHz.
I think this will be fine. I doubt I'd notice another (effective) 32MHz on the bus anyway, and this combo gives me a nice, clean and stable 2.30GHz.
I told myself when I bought this board (just so I could overclock better than the useless Gigabyte I had) not to be mad if I couldn't hit exactly 200MHz on the FSB![]()
it is if it's a barton 333 or 26(8)00+ 333 on a nf7-s board
you have to cut the 3rd L12 bridge to get the chip to run over 200 mhz...
Edit - fixed messed-up UBB code
The FSB limitation is unlikely to be the processor.
Originally posted by: amcdonald
I got my a7n8x (non-deluxe) up after my 8rda+ died.
13x177
FSB limited by board (rev 1.04)
Yup... He's right. Go into System Performance and set it to "User Defined". It unlocked everything. Then you can change to what you want.Originally posted by: infinite012
Originally posted by: amcdonald
I got my a7n8x (non-deluxe) up after my 8rda+ died.
13x177
FSB limited by board (rev 1.04)
I really doubt that it's a board limitation as I have my rev1.04 a7n8x (deluxe....paid the extra $10) running 11x200 (1.525v in bios) and I have successfully booted (unsuccessfully into Windows, however) at 12.5x200, giving me 2500MHz. I don't really care for 2.5 GHz as it would probably deteriorate the CPUs lifetime, so I am running at 2.2 GHz at 44C idle (fan set to 3300 rpm [HHC-001]) and 51C full load.
edit: my ram is corsair twinx pc2700LL (2x256MB) running DC
Originally posted by: Cadaver
MachoDonut & Pelikan-
I swapped out my Zalman copper flower for my old & noisy ThermalTake Volcano 7... and now, though noisier, I'm running happily (so far) at 200 x 11.5 = same 2300MHz that I had stable before at 184 x 12.5.
Vcore is 1.725V.
For what ever reason, it seems to have been a heat issue. Either that, or the system needed some more burning in at a moderately high FSB before hitting 200.
Eh, whatever. I'm happy now. I'll be installing a side-panel 92mm Vantec Stealth fan tomorrow, blowing down on the HSF with cool room air. Should help further. I've also dropped the Volcano 7's fan to 3000rpm, which helps alot with the noise.