xp-m 2500 overclocks like mad!!!

**calmhorizons** · March 23rd, 2004, 09:15 AM

Just got my xp-m 2500 couple days ago. After 2 days of tinkering I'm completely stable at 220x11.5 (2530mhz) at only 1.775 vcore!

What an awsome chip. Ran 200x11 (xp3200) speed right out of box at only 1.65 vcore. Oc'ers out there.....get on while you can!

**calmhorizons** · March 23rd, 2004, 09:17 AM

Should also mention that's on air coolings with idle/load temps of 37/51. With water who knows what can be attained with this chip!

**thronka** · March 23rd, 2004, 09:58 AM

that because all the 2500 bartons are unlocked. 2500 up to 3100 is just a down clocked 3200

**samwichse** · March 23rd, 2004, 10:46 AM

Um, no, almost all regular 2500+ bartons are locked.

calmhorizons: that's a super-nice overclock.

**thronka** · March 23rd, 2004, 10:53 AM

No... all the 2500s are UNLOCKEd. (my version of unlocked means being able to overclock) The FSB can be raised and make the chip run faster.

**Turnip12** · March 23rd, 2004, 12:23 PM

Don't the terms Locked and Unlocked generally refer to the multiplier?

**AzKidd69** · March 23rd, 2004, 12:30 PM

"Locked" means the multiplier is set @ the factory and unchangeable WITHOUT doing some doctoring of the CPU
"unlocked" means the multiplier can be adjusted thru the BIOS with no CPU doctoring

bumping up the FSB is controlled by the motherboard BIOS not the CPU altho the amount yoiu can overclock by the FSB is limited by the peripherals installed the cpu installed etc

**Mykex** · March 23rd, 2004, 12:50 PM

Besides, there are no 3200 Barton-M's.

(BTW, the M denotes Mobile, he's using a laptop chip in his desktop hence the low stock voltage and high tolerances)

**tgxiii** · March 23rd, 2004, 12:56 PM

calmhorizons is talking about the Mobile version of the Athlon XP 2500+, which run at lower stock voltages and are multiplier unlocked. But I think the reason why they get such great overclocks is not from the fact that they're unlocked, but because they run at such low voltages. Someone correct me if I'm wrong, but the stock voltage on the Mobile Bartons are 1.45v. You can keep raising the voltage and get higher overclocks.

**tony_j15** · March 23rd, 2004, 02:50 PM

No... all the 2500s are UNLOCKEd. (my version of unlocked means being able to overclock) The FSB can be raised and make the chip run faster.

I think you should stick with the lingo the rest of us use. Under your terminology, NO chips are locked. At first, XP2500 was unlocked (meaning multiplier) but AMD has now locked ALL new desktop chips except for the FX series. Enjoy those 1700's and 2500's whle you can, we may never see multiplier unlocked procs again.

**bill1971** · March 23rd, 2004, 03:08 PM

tony:

Do you know when the locked multiplier on the Barton 2500 was implemented? I bought a retail-boxed about 3 months ago. How can I tell? It's currently in a Shuttle MN31N, w/really no OC'g capabilities, w/the exception of "Aggressive" or "Turbo" settings, which just adjust the memory timings,(and it doesn't seem to care for any of the memory that I have at the moment).

If I can juice this CPU reliably,I'll take it out of the Shuttle, and try it in a more OC-friendly board. Thanks.

- Bill

**yclyde** · March 23rd, 2004, 03:19 PM

Nice OC! Was wondering what MB you are using? I've tried on an asus board but apparently not all the multiplyers are displayed.

**yclyde** · March 23rd, 2004, 03:26 PM

Bill, I think the unlocked Bartons are pre-9-15-03. I may be wrong, but I believe all bartons are locked from that point on.
You can still hit 200 fsb (at least thats my experience with the 2500) w/good mem & mb, even though they are locked.

**Overclocked412** · March 23rd, 2004, 03:50 PM

just because AMD locked them (supposebly), we can still do the pencil trick right? ('doctoring')

**yclyde** · March 23rd, 2004, 03:56 PM

To my knowlege the pencil no longer works, unfortunately.

**Omardeth** · March 23rd, 2004, 04:11 PM

if i remember right i think if you got one that is made before week 41 of 2003 then the multiplier is unlocked .

**MitaDC** · March 23rd, 2004, 04:15 PM

Anybody have a link to how to 'doctor' your chip?

**tgxiii** · March 23rd, 2004, 07:01 PM

I know there's a pin trick where you connect two pins of the CPU to unlock the chip. I'll post it if I can find it.

Also, you can mod the L5 bridge to make your mobo detect it as a Mobile CPU, thereby also unlocking it.

Here's one: http://www.cpuheat.wz.cz/html/AXP_mu...Multiplier.htm (you have to scroll down a lot to get to the bridge modding part)

Sorry, I can't find the website with info on connecting the CPU pins to unlock it. Here's another site with some more info, though: http://fab51.fc2web.com/pc/barton/athlon-e24.html

**calmhorizons** · March 24th, 2004, 05:15 AM

Yes the M denotes Mobile.

tgxii is correct. It's not necessarily the fact that the processor is unlocked, but that it runs at such low default voltages.

I'm running stable at 2535 mgz totally stable with now wire tricks or bridge mods. Just plopped the cpu in and good to go.

yclyde: I running a Soltek 75-frn2-rl (nforce 2 400 ultra). The problem with the Asus boards is that withoust a modded bios, the multi on goes to 12.5 or so I hear. Not sure what the fsb ceiling is on the Asus boards. This Soltek goes to 250 on the fsb.

I've booted into windows sucessfully at both 220x12 (2640 mhz) and 240x11 but it's not prime 95 stable at even 1.85 vcore.

I'm sure with water and a modded bios with support of 1.9 vcore and higher I could run at 2650-2750 mhz on air.

Awesome processor. It makes the costly Athlon Fx solution less appealing.