Help With More O/C

XRogerX · Sep 30, 2008

Hello all i just got AX78 Motherboard and X2 5400+ Brisbane Black

Was wondering if anyone can help me overclocking this alittle more

Right now i got it @ 3.2 and Stable with the x16 , i havent touch the FSB

this is my HSF and memory

i will post the links to each item

ARCTIC COOLING Freezer 64 Pro
http://www.newegg.com/Product/Produc...82E16835185125

OCZ SLI-Ready Edition 4GB
http://www.newegg.com/Product/Produc...82E16820227269

System Specs

Abit AX78 - AMD 770
AMD Athlon 64 X2 5400+
OCZ 4GB DDR2 800MHz
GeForce 8800 GT 512 MB
Seagate 250 GB SATA
Seagate 320 GB SATA
DVD Writer 18x Dual Layer SATA
XP Pro Service Pack 3
Antec NeoPower 650 Blue
Creative SB X-Fi XtremeGamer
COSMOS 1000

thanks in advance

Caviman2201 · Sep 30, 2008

have you changed the cpu voltage at all or is that on stock volts?

XRogerX · Sep 30, 2008

Caviman2201 said:
have you changed the cpu voltage at all or is that on stock volts?

I changed that from 1.32 to 1.4

Caviman2201 · Sep 30, 2008

Its my understanding that after 3.2GHz, Brisbanes require a LOT of voltage to keep climbing... and hit diminishing returns for the heat... you might have to bump it up to 1.5 or more just to hit 3.3GHz.

I would keep increasing vcore until you are able to POST and then possibly stabililty test 3.3GHz... if you hit 1.55 and still can't POST or get it stable, I would consider 3.2 your max OC...

XRogerX · Oct 1, 2008

ok i got it to 3.3 @1.45 volts but it crashing i think it the memory i dont think i have enough Volts for that cause im @2.10

Should i push it to 2.20 volts

satansangel114 · Oct 1, 2008

I got mine stable @ 3223Mhz. any more was not worth the heat, useing the same cooler as you.
At that voltage would post to 3.5, but not stable.
(details in sig)

XRogerX · Oct 2, 2008

im not useing the FSB in this right now only the muti, my FSB is still at 200

Caviman2201 · Oct 2, 2008

I would, personally, leave the FSB alone since you only have DDR2-800 mem... of course, it will likely do better than 200MHz with more volts... my cheap G.Skill DDR2-800 1.9v ran 231FSB (DDR2-924) all day at 2.0v.

Since you have a BE though, just keep pushing the multi up and see what the Proc maxes out at... I wouldn't go any more than 1.45v for 24/7 if I were you. Once you know your proc's max speed, then you can start moving the FSB up and dropping the multi to keep the proc at its max speed but OC'ing the RAM as well...

InfernalVortex · Oct 2, 2008

I also have a new 5400 BE that I'm putting through the paces right now.

It will go to 3100 at stock voltage. 3200 resulted in pretty quick bluescreens after a few minutes of Prime. I put it to 1.350v and it did the same thing. Then I decided to bump it to 1.4v and it'll do 3200 fine. 12 hours no errors on Prime95.

1.4v at 3300 is a no go. I dont want to up the voltage with the coolint setup I have right now. I'll be lapping the heatsink/proc and then I'll give it a shot.

It errored in Prime at around 30 minutes at 3255. Now it's been priming for 4 hours at 3240. Again, at 1.4v.

I ran into some pretty serious goofs with the bus at 260. passed several quick tests, but the permutations of the memory divider and multiplier aren't really adding up to anything better than a 202MHz ref clock.

Maybe I should try dumping the memory down to 333 and increasing the ref clock to something like 280?

Anyway, that's been my experience with it. The wall is just past 3200.

XRogerX · Oct 3, 2008

InfernalVortex said:
I also have a new 5400 BE that I'm putting through the paces right now.

It will go to 3100 at stock voltage. 3200 resulted in pretty quick bluescreens after a few minutes of Prime. I put it to 1.350v and it did the same thing. Then I decided to bump it to 1.4v and it'll do 3200 fine. 12 hours no errors on Prime95.

1.4v at 3300 is a no go. I dont want to up the voltage with the coolint setup I have right now. I'll be lapping the heatsink/proc and then I'll give it a shot.

It errored in Prime at around 30 minutes at 3255. Now it's been priming for 4 hours at 3240. Again, at 1.4v.

I ran into some pretty serious goofs with the bus at 260. passed several quick tests, but the permutations of the memory divider and multiplier aren't really adding up to anything better than a 202MHz ref clock.

Maybe I should try dumping the memory down to 333 and increasing the ref clock to something like 280?

Anyway, that's been my experience with it. The wall is just past 3200.

Well its not going to hurt nothing so give it a shoot ,just dont :burn:

anything up

Caviman2201 · Oct 6, 2008

Also, maybe this was just my experience, but I had mine running at 3.1Ghz - could not hit 3.2 for the life of me - for over a month at 1.425v. Decided one day to just give it a shot again, bumped up the voltage to 1.475 and voila... 11hrs Prime95 (2 instances) stable at that voltage.

Moral of the story: run at your current max for a while and then try again later... processors are silly creatures...

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