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I can't get this Barton 2500+ to do 200fsb!

I

idea

Golden Member
This is the first time I'm trying to overclock a system. Everywhere I read, my system is designed for at LEAST 200fsb at 1.65-1.70 vcore. Something here is wrong. I don't even get to see the Windows boot screen before it restarts. Also, can someone tell me how to figure out the factory settings of my ram? I *may* have bought PC2700 but it's highly unlikely.

AMD Barton 2500+ (locked 11x166mhz)
SLK900a+50CFM 80mm
Abit NF7-S
2x256mb Corsair TwinX-LL PC3200 DDR400
PNY Ti4200 64mb AGP 8x
Antec TruePower 330w

Temps at factory settings (tested by prime95 small ffu):
CPU 43c, 47c load
GPU 43c, 43c load
Mobo 31c, 32c load

Here are my mobo settings (after "optimal settings"):

FSB: 200x11
Mem- 2-3-3-11 (and 2-2-2-11)
Vcore-1.7
Vdimm-2.6
Chipset- 1.7
AGP-1.5

Disabled system bios cache, video ram cache, fsb&agp spread, cpu thermal throttle
 
Well, I even saw some people who had to set the voltage to 1.85V in order to get 3200+. I guess Barton 2500+ this day is not like before, when 3200+ was easy thing to do. Why don't you just try higher voltage?
 
Originally posted by: idea
This is the first time I'm trying to overclock a system. Everywhere I read, my system is designed for at LEAST 200fsb at 1.65-1.70 vcore. Something here is wrong.
Click to expand...

Nothing is wrong. There are no guarantees in the world of overclocking. As I've observed, desktop bartons have gotten worse and worse at overclocking as their production went on. Mine wouldn't even do 200fsb with 1.8v, so I simply bought myself a mobile barton (cheaper than a desktop, unlocked, and infinitely better at overclocking).
 
Originally posted by: Avalon
Originally posted by: idea
This is the first time I'm trying to overclock a system. Everywhere I read, my system is designed for at LEAST 200fsb at 1.65-1.70 vcore. Something here is wrong.
Click to expand...

Nothing is wrong. There are no guarantees in the world of overclocking. As I've observed, desktop bartons have gotten worse and worse at overclocking as their production went on. Mine wouldn't even do 200fsb with 1.8v, so I simply bought myself a mobile barton (cheaper than a desktop, unlocked, and infinitely better at overclocking).
Click to expand...

<-- agrees.

I was having to run my locked Barton 2500+ at 1.75v just to be able to run at 185 FSB (my motherboard was holding me back from 200 FSB). If you've got good cooling, I wouldn't sweat running that chip at 1.85v.
 
First, as to your question about the factory settings of your RAM. Run CPU-Z, it should tell you default values. I just overclocked my barton to 200fsb today with only a 7.5% vcore increase. I'm at 205 right now w/ +10% but can't get past that. I think I could get higher if my damn motherboard (GA7N400 Pro2) could go higher on the vcore. Caps out at +10% =/ I think you might have just got a dud? Also, mine is an XP-M, i'd be interested to know what yours is.

<edit>

Avalon, your Mobile Barton is unlocked??? Mine is locked at 11x multiplier. CPU-Z says it's an XP-M, but maybe it's not? Also i've heard of a way to manually unlock AMDs, is it easy/safe?
 
I had much better luck with my barton than I am with my winchester. I could run 10*225 @1.8v and 2.8v for memory with Asus NF2 Ultra deluxe board.


I am having the hardest time getting anything out of my new winchester & A8N-Sli combo
 
Originally posted by: bmillerd
First, as to your question about the factory settings of your RAM. Run CPU-Z, it should tell you default values. I just overclocked my barton to 200fsb today with only a 7.5% vcore increase. I'm at 205 right now w/ +10% but can't get past that. I think I could get higher if my damn motherboard (GA7N400 Pro2) could go higher on the vcore. Caps out at +10% =/ I think you might have just got a dud? Also, mine is an XP-M, i'd be interested to know what yours is.

<edit>

Avalon, your Mobile Barton is unlocked??? Mine is locked at 11x multiplier. CPU-Z says it's an XP-M, but maybe it's not? Also i've heard of a way to manually unlock AMDs, is it easy/safe?
Click to expand...

All of the mobile bartons are unlocked... period. If your's honest to god isn't then you got ripped off and bought an OEM desktop Barton. Or if your board simply doesn't support the mobile it might recognize it as a desktop chip and not let you adjust the multi.
 
I was right, here are the settings for my memory from CPU-Z. My ram can't be an issue because it's clocked at 200mhz.

PC3200 (200mhz)
Corsair CMX256A-320LL running in dual
2-3-2-6

My CPU isn't new, it's quite old.. I bought it like two years ago. It's an AXDA. I see AXDA getting 3200+ speeds all over cpudatabase.com. I'll try upping the voltage tonight although I doubt 1.70 to 1.75 will make much of a difference. I couldn't even see the boot screen before. I may have to go much higher.
 
It may be a combination of your memory and mobo ... my 2x512mb Corsair TwinX 3200LL wouldn't do 200fsb on my Asus A7n8X deluxe rev2 with a mobile barton 2500+. Best I could do was 198fsb (rock-solid stable at that, wouldn't even load windows at 200). The same dimms work fine on my new Asus K8N at 400HTT. I also had cheap value ram (also PC32000) that wouldn't even do 180fsb stable on the A7N8X, so it was clearly picky for ram.

You might want to raise your dimm voltage to 2.7 - that's the first thing Corsair always recommends.
 
May also want to change your mem timings,.... seems like most folks got high OC's at 2,3,3,9 or 2,3,3,11
 
Don't be too worried.

A lot of the newer Bartons couldn't hit 2200 MHz, including mine.

The best mine could do without acting up was a meager 11*184 IIRC.

Still a good CPU for the money even at stock though 🙂
 
I would definitely try upping the mem and cpu voltage and relax the mem timings a bit. Also try downloading the most recent bios and check that your airflow is pretty good in the case. I also had luck with putting fresh batch of as3 on my cpu again. I had 2.8v on mem and 1.825v on cpu running it at 225x10 with my old barton core for quite a long time so the cpu can handle the voltage for long periods of time. I wonder if its possible to that another part can't handle the bus going that high.
 
Alot of people with the nf-7s boards had bad luck doing 200 fsb no matter what you did with the stock bios. Some people had luck with tic tac's bios etc. Been awhile, can't remember all the names of the bioses that were released back then. I do remember i switched to a dfi infinity board and did 250fsb same ram etc without any problems.
 
Screw this. I set my memory to 2-2-2-11, tried frying my CPU with voltage, and I could never get it stable enought to do 200fsb. I don't think it's my ram because it's the small fft prime95 that kills it after a few minutes. I didn't try tic tac's bios because, well, it's not guaranteed to help me and it may screw up my mobo.

I'm putting it back to factory settings and calling it a day.
 
another big thing when i researched all of this back in the summer....it also depends on the amount of voltage supplied to the nforce2 northbridge chipset.... though the bios has options for 200 mhz fsb... doesnt mean that it can handle it. Some ultra boards do it by default, others need to have chipset voltage as an option. I have a leadteck winfast 18D, the most stable i can get teh chip is ~175 fsb. The same setup and cpu with asus a7n8x-e deluxe, i got it to 200 easily... up to like 210 mhz... but left it at 12x200 2.8v dram, 1.85v cpu cuz that is also northbridge voltage limited. (that was with a week 33 unlocked chip)

with a locked 2500 barton, i have the same problem with the leadtek board.
 
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