Athlon XP 2500+ OCing (Success! Prime95 stable!)

[frankierx]

my current system: xp 2500+, epox 8rda mobo, 1 gig pc-2700, nvidia fx 5900 128mb.

How do i OC my xp 2500+ on stock air cooling?

 

[imported_SLIM]

Read guide at top of forum listing.

 

[Chopstick217]

Originally posted by: SLIM
Read guide at top of forum listing.

:thumbsup:

 

[frankierx]

Originally posted by: LordPhoenix
no. not that much of a difference and i bet you can OC to 3200+. i would take the money and upgrade the 2700 to 3200 and later get an A64 939 instead.

so far I can OC my 2500+ to 2800+ speeds (from 1.8Ghz to 2.08Ghz) on air. I will upgrade from pc2700 to pc3200 today so i can try to up the fsb to 200. so far the max i can OC is 166x12.5. I even tried uping to the Vcore up to 1.9V. The only other thing I can think of is to up the FSB to 200. Fot that I will have to upgrade to pc3200 today like you recommended.

 

[BlueWeasel]

If you've got an early revision 8RDA, then that board may not like a FSB speed higher than 185. I've got a 8RDA with a XP-M 2600+ and I can only run it at 12.5x182 = 2275mhz. I can push the FSB a little higher to around 190-ish, but the system isn't stable 24/7.

You should at least be able to push the chip to 12.5 x 180, possibly higher.

 

[frankierx]

Originally posted by: BlueWeasel
If you've got an early revision 8RDA, then that board may not like a FSB speed higher than 185. I've got a 8RDA with a XP-M 2600+ and I can only run it at 12.5x182 = 2275mhz. I can push the FSB a little higher to around 190-ish, but the system isn't stable 24/7.

You should at least be able to push the chip to 12.5 x 180, possibly higher.

could not get it booted at 180x 12.5. running a bit unstable at 175x 12.5. Possibly due to pc2700 value ram. Should try it again once I get the corsair xms pc3200 ram.

Update: running stable at 173x12.5= 2.16Ghz ( xp 3000+ speeds). Ordering corsair xms pc3200 ram. Will try again to push 180x12.5. :thumbsup:

Update: got the corsair xms pc3200 and now am pushing 175 Mhz x 12.5 = 2.19 Ghz (xp 3200+ speeds)

 

[blacktankofhopelessness]

I'm on a A7V8X and running stable - finally - at 175x13 (2275 mhz). My temps are 46 idle and 52 under stress (prime 95 torture). I can tell you that I have PC3200 memory so I think it's my motherboard that's limiting my overclock.

 

[frankierx]

Update: got the corsair xms pc3200 and now am pushing 175 Mhz x 12.5 = 2.19 Ghz (xp 3200+ speeds)

 

[imported_whatever]

Originally posted by: frankierx
Update: got the corsair xms pc3200 and now am pushing 175 Mhz x 12.5 = 2.19 Ghz (xp 3200+ speeds)

although that is near 3200+ speeds, it is not as fast as a 3200+. the 3200+ runs at 11*200, and the 3000+ runs at 13*166 = 2166. so you would have more like a 3100+ or so.

 

[frankierx]

Originally posted by: whatever

Originally posted by: frankierx
Update: got the corsair xms pc3200 and now am pushing 175 Mhz x 12.5 = 2.19 Ghz (xp 3200+ speeds)

although that is near 3200+ speeds, it is not as fast as a 3200+. the 3200+ runs at 11*200, and the 3000+ runs at 13*166 = 2166. so you would have more like a 3100+ or so.

because according to the oc guide in cpu/oc forum section, it says to use higher multiplier rather than higher fsb.

okay 200 x 11 works now, but my idle temp just went to 39C from 36C at 175x12.5

 

[frankierx]

Im getting an error in Prime95 during the first 2 to 14 mins. I'm at 200x11=2.2 Ghz at 3-3-8 Latency 3.0.
Vcore 1.69 . Any suggestions? Corsair xms pc3200. Should I do anything with the timings? Should i lower the fsb?

 

[frankierx]

Im getting an error in Prime95 during the first 2 to 14 mins. I'm at 200x11=2.2 Ghz at 3-3-8 Latency 3.0.
Vcore 1.69 . Any suggestions? Corsair xms pc3200. Should I do anything with the timings? Should i lower the fsb?

 

[Fern]

As long as your temps under load aren't too high, raise the vcore and try P95 again.

Fern

 

[frankierx]

Originally posted by: Fern
As long as your temps under load aren't too high, raise the vcore and try P95 again.

Fern

im at 1.75 Vcore. 2 mins into prime95 error. corsair xms pc3200 at 3-3-3-8 , Vdimm 2.77, any recommendations?

 

[frankierx]

Bump

 

[frankierx]

bump

 

[frankierx]

Does it matter that my epox 8rda mobo is rated only for 333 fsb and I'm ocing to 200mhz x 11 = 2.2 Ghz at 400 fsb ram?

 

[streetkid]

Originally posted by: frankierx
Does it matter that my epox 8rda mobo is rated only for 333 fsb and I'm ocing to 200mhz x 11 = 2.2 Ghz at 400 fsb ram?

Yes that could most definatly matter. Some 8rda+s (like mine ) have the ultra 400 chipset, some dont, yours could not.

I use a program called everest:

http://www.lavalys.com/product....php?pid=1&lang=en

under the motherboard option, click on chipset, mine says "Northbridge: nVIDIA nForce2 Ultra 400" whats yours say.

btw thats a great program for finding out just about anything about your hardware

 

[frankierx]

Originally posted by: streetkid

Originally posted by: frankierx
Does it matter that my epox 8rda mobo is rated only for 333 fsb and I'm ocing to 200mhz x 11 = 2.2 Ghz at 400 fsb ram?

Yes that could most definatly matter. Some 8rda+s (like mine ) have the ultra 400 chipset, some dont, yours could not.

I use a program called everest:

http://www.lavalys.com/product....php?pid=1&lang=en

under the motherboard option, click on chipset, mine says "Northbridge: nVIDIA nForce2 Ultra 400" whats yours say.

btw thats a great program for finding out just about anything about your hardware

Motherboard Chipset nForce2-SPP ; that is my chipset

 

[howdyduty]

Up your 1.8 vcore and try it. You might try and run some of your applications or games. Try and run 'toast' cpu load program. As long as they run fine and no lockups, then no worries.

 

[frankierx]

Originally posted by: howdyduty
Up your 1.8 vcore and try it. You might try and run some of your applications or games. Try and run 'toast' cpu load program. As long as they run fine and no lockups, then no worries.

what about prime95? I'm getting an error between 5 to 14 mins of it. Should I disconnect my floppy drive from the mobo? Sometimes when changing the fsb or multiplier to a disagreeable setting, the floppy drive acts bersek at boot up. I then reset the machine and all is well.

Running toast cpu load program for 4 hrs 30 mins now while asleep. Program is going and going. What am I supposed to look for? The test does not come with help topics.

 

[frankierx]

Scaled 2500+ back down to stock speeds. Able to pass prime95 with ease. memtest86 shows 80 errors, 4 past. Should I rma my corsair xms or just chock it up as normal results and keep them?

Do you think I damaged my corsairs out of the box? I was oc'ing my cpu when I poped them in.

 

[frankierx]

.Okay, RMA'd the bad corsairs xms pc3200 ram and poped in the old samsung pc2700 ram. no memtest86 errors whatsoever now.

 

[frankierx]

Success!!!

The OCing of my 2500+ to 3200+ speeds at 200fsb X 11 =2.2Ghz, Vcore 1.8, Vdimm 2.7, is now a compete success!!! It passed the Prime95 tortue test at the 2048K custom setting. I did it by buying the 400 fsb rated Epox 8rda3I mobo, buying corsair xms pc3200 ram, setting ram settings to 2.5-3-3-8, upping Vcore to 1.8 and Vdimm to 2.7. Idle 42C and load at 50C. Thanks to all for their support and expertise.

you guys are great. I am so happy.

 

[beserker15]

so it was your ram that was holding you down? for some reason with my computer...prime 95 will always get errors, and my computer will reboot in games/music/movies if i set it to like 2.1ghz or more...regardless of voltage. from stock 1.65v to 1.8v doesn't seem to make a difference for stability in my system. i got an epox 8k5a2 (which i know can handle fsb up to like 195mhz) and corsairs value ddr3200 ram.