O/Cing to FSB 200mhz w/ 2500+

[Joomy]

Am I right in thinking that a Barton 2500+, with one of the new 200mhz motherboards, can now be O/C'ed a Bus speed of 200mhz? I remember there were problems with getting the 2500+'s to reach 200mhz, but with the new boards being designed to support the 3200+ (with native 200mhz bus) there should not longer be a problem, right?

Than again, if the problem with was to do with the CPU itself, 200mhz may still be impossible. Anyone actually tried to bump the FSB to 200 yet?

 

[svol]

200 MHz is reachable with the XP2500+... it might need some multiplier adjustments or voltage increases, but most bartons should be able to reach 200 MHz FSB.

My CPU fan spins so fast that it creates a wormhole

 

[nja469]

I just got an A7n8X deluxe PCB version 2.0 and updated BIOS to the latest 1004, 2/256 OCZ PC3200 CL2's for dual channel and barton 2500+ from newegg and it easily went to 200 FSB. It runs right now at 2.14. POST and win XP say it's a 3000+ I love it, a $300 processor for $125! Also with stock cooler it runs at about 38/40 C.

I tried making it a 3200+ (400 FSB w/ 11.0 multiplier) and windows won't boot, so I guess 2.14 GHz is all I'm gonna get, which isn't bad since 2.2Ghz (AXP 3200+) is only 86Mhz more, whooopie.

So it runs stable and cool with aggressive CPU settings, ram at 100% and 6-3-3-2. One question though, is 6-3-3-2 good? What are really good ram timings? Would 6-2-2-2 be better ? I tried 5-2-2-2 and it wouldn't post and had to reset cmos.

 

[skligmund]

YOu can't increase your voltage anymore to the CPU? That is why I can't get above 1755 MHz with my lame T-Bred 'B' 1800. If i modify my mobo, and get higher voltages, I can go up to 1800, but my CPU starts to get warm. So if you can, raise the voltage a little, I bet it will go (assuming you haven't yet)

What are we going to do tonight Brain?
The same thing we do every night Pinky; <b>Try to take over the world!</b>

 

[nja469]

You're right I haven't tried upping voltages at all. The error I get when I run it a 200 x 11 is when Win XP is supposed to boot it doesn't and instead says "ntoskernal.exe" file is bad and may need reinstallation (or something like that).. so i dunno, is that error common when overclocking? The error goes away and win XP boots up fine when I go back to mutliplier of 10.5 or lower.

 

[CompSci]

Yep, that's a pretty common error...
File corrption is not uncommon at all! The loader, kernal and profiles are the most common, but ya got past the loader, so its tryin... Increasin the Vcore voltage MAY get ya past it...
I had to bump my vcore from 1.6 to 1.675 to get past the same problem, but i'm runnin a 1700+(B). Better check with someone who has a Barton core on just how much ya can moderately bump it up...
My fist increase was to 1.65, and all came up fine, but still got occasional exceptions, at 1.675 I got stable... Although, i read some just MAX out the voltage at 1.85 and run hard and hot...

 

[nja469]

Thanks for the info. I tried bumping the vcore, it loaded windows but had an exception until I got to 1.725, there it was stable but ran much warmer than before. It runs stable at 10.5 x 200 with no vcore adjustments, but anything higher (multiplier or FSB) is needs more voltage, so I'm leaving it here since it runs at stock voltage, stable and cool and only 85MHz less than the 3200+

The best memory timings I can get are 6-3-3-2, are these decent or could/should I get much better timings? I'm running in dual channel mode.

 

[Joomy]

10.5 x 200 is 2100mhz, is 200 just a round figure? If not, how are you getting 2.14ghz?

It's interesting that Windows gives you an error like that. I've seen that some people have gotten ~2.3ghz with their 2500 Barton by fiddling with the FSB and core voltages. One would expect to be able to get 2.5ghz (12.5 x 200) now that the 2.0 boards are out... but I haven't heard of any as of yet.

 

[svol]

Well 6-3-3-2 is nice but 6-2-2-2 is better... don't use the 5T setting on PC3200 speed as some users report data corruption at that speed and even the fastest Corsair modules do PC3200 at 6T.

If it wont post try a little increasement in the Vdimm... 2.7V should be no problem for your RAM.

My CPU fan spins so fast that it creates a wormhole

 

[svol]

Well if AMD puts to lower quality cores on the XP2500+ (which would make sence) then they OC not very high.
Remember that the Barton is just the T-bredB with 256KB L2 cache added... and 2.5 GHz is a big OC even for the T-bredB.

My CPU fan spins so fast that it creates a wormhole

 

[FruityX]

can i get it to 200 also?
i have a GA-7VAX motherboard and a Barton 2500 and i increased the fsb to 183 without touching the volts.

other problem i have is that windows xp or bios wont detect my CPU is writes :"Unknown CPU Type"

 

[svol]

Well I doubt you will be able to reach 20MHz with the KT400 chipset as it officially only support 333MHz FSB and can't even run stable with 333MHz FSB and DDR400 in many cases... but you can always try.

If your CPU isn't correctly detected even at normal speed download the latest BIOS to get Barton support. Windows XP just displays what the BIOS is displaying.

My CPU fan spins so fast that it creates a wormhole

 

[Gozer]

HI, I have Both Asus A7N8X-Deluxe(Nforce2-Rev2)and the Asus A7V8x KT400-Rev2 AMD XP2500 Corsair 512MB TwinX PC3200 Low Latency Dual Channel Kit.
I am running at 2240MHz (11*204)2-2-2-5-1 on my A7N8x the KT400 could not do it past 182fsb.
But I love the XP2500 with the A7N8X
3Dmark 2k1= <A HREF="http://service.futuremark.com/compare?2k1=6529345" target="_new">http://service.futuremark.com/compare?2k1=6529345</A>
not to bad for a $190CDN cpu but make sure you have good RAM, I tested 4 different brands of DDR.
Another added bonus is the XP2500 runs very cool, even with stock H/F; I am using the Swiftech MCX462 with 80mm fan and I am at 32c and under load about 37c-38c.




Do you smell that? I love the smell of thermal compound in the morning

 

[Croaker]

I have a Barton 2500+ @ 2200mhz (11*200). On an A7N8X D 2.0. Added only a litte voltage. I have XMS-3200LL. This is a great CPU for the money.

 

[FDTzeng]

Well dont assume that 200MHz FSB is guaranteed, I can unhappilt tell you that mine does not =( I get about 185 max but thats only at low mults and high volts damn damn damn damn damn, looks like i got the shaft

Athlon XP 2500+ @ 2225MHz (12.5x178 @1.850v), Volcano 7 w/Smart Fan2, A7N8X Standard Rev. 1.06, Kingston HyperX PC3000 512MB @177MHz, Radeon 9700Pro, SB Live 5.1

 

[svol]

You have tried extra northbirdge cooling? Maybe your motherboard is holding you back.

My CPU fan spins so fast that it creates a wormhole

 

[AlphaFox]

I have a barton 2500+ too, A7N8X rev 1.6 board with 2X corsair PC3200.. I can only hit 180 fsb stable, but thats just my MB. I am running @ 2255Mhz now with stock 1.65 voltage!! (180X12.5) I was impressed! I posted at almost 2.4ghz but my MB doesnt like 190fsb. I need a rev 2.0 board, anyone know if they will trade in boards for the 2.0 board? I am using the latest bios and that didnt help.

 

[svol]

Some earlier ref boards also hit 200MHz... it mights be that your northbridge is overheating as the standard cooling is not good.

My CPU fan spins so fast that it creates a wormhole

 

[AlphaFox]

I did replace it with an active VGA cooler, but didnt help.

 

[FDTzeng]

Ive given up on FSB - what about the multiplier. Ive heard if I cut the last L5 bridge I can get 13x and above. But for TBreds Ive heard its the last L3 Bridge, and since ppl say the Barton is just a TBred with more cache, maybe its the last L3?

Which is it ?! Last L5 or L3? Someone have a straight answer (or better yet experience with this?) Also the "Wire trick" isnt needed since I got the A7N8X right? I did it but nothing changes...

Athlon XP 2500+ @ 2225MHz (12.5x178 @1.850v), Volcano 7 w/Smart Fan2, A7N8X Standard Rev. 1.06, Kingston HyperX PC3000 512MB @177MHz, Radeon 9700Pro, SB Live 5.1

 

[svol]

No they're the same... just break the last L3 bridge.

My CPU fan spins so fast that it creates a wormhole

 

[FDTzeng]

And all Id have to do to "undo" this in the event of undesirable results, is "pencil" the connection back together and add some tape right?

And by break you mean Xacto knife or Razor blade it right?

Athlon XP 2500+ @ 2225MHz (12.5x178 @1.850v), Volcano 7 w/Smart Fan2, A7N8X Standard Rev. 1.06, Kingston HyperX PC3000 512MB @177MHz, Radeon 9700Pro, SB Live 5.1<P ID="edit"><FONT SIZE=-1><EM>Edited by FDTzeng on 06/13/03 03:46 AM.</EM></FONT></P>

 

[FDTzeng]

Wait AlphaFox u can run that at stock voltage? But how stable are we talking about? How long with Prime95? How long with 3DMark01SE looping?

Athlon XP 2500+ @ 2225MHz (12.5x178 @1.850v), Volcano 7 w/Smart Fan2, A7N8X Standard Rev. 1.06, Kingston HyperX PC3000 512MB @177MHz, Radeon 9700Pro, SB Live 5.1

 

[AlphaFox]

ya, 1.65V @ 2.25Ghz. ran sandra 50X burn in with no problems. used it for several days with no issues. getting a rev 2.0 board so I can set fsb to 200mhz + so we will see what it can really do then... =)

 

[FDTzeng]

What kinda cooling on the CPU? For some reason to get my oc i cant run the def voltage (im assuming cuz it gets too hot...)

Athlon XP 2500+ @ 2225MHz (12.5x178 @1.850v), Volcano 7 w/Smart Fan2, A7N8X Standard Rev. 1.06, Kingston HyperX PC3000 512MB @177MHz, Radeon 9700Pro, SB Live 5.1