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barton 2500 + OC

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kramer1974

Registered
Joined
Dec 17, 2003
I just built this puter about a week ago and right off the bat i turned the thing to 200 fsb. I tried to get to 210 but no luck at stock voltages. I read a bunch of threads and set my ram to 2-2-2-11 and my vcore to 1.75 and vdimm to 2.7. I set my fsb to 215 since the thread seemed to say I could get much more than that. All posted fine and seems to be working correctly but I ran Prime95 under the torture test and can only get through 6-8 mins. I get an error regarding sum or rounding problems. Is this a huge deal? How accurate is Prime95?
 

wquiles

Member
Joined
Oct 22, 2003
Location
Dallas, Texas
Yes, it is a huge deal to fail Prime95. You either need more voltage to the CPU, better cooling to the CPU, relaxed settings on RAM, or a combination of all of them.

What are your iddle and load temperatures (before Prime fails)?
 
OP
K

kramer1974

Registered
Joined
Dec 17, 2003
im running at 35-38 idle...43 while running prime95 about 6-8 minutes...

i have 1.7v vcore...so u think i should up the vcore a bit more? how much? and u think i should loosen those 2-2-2-11 timings to what?

thanks again.
 

Aseaver

Registered
Joined
Dec 5, 2003
Location
Dayton
Bump the vCore by 0.025 volts(1.7 to 1.725 to 1.75, etc) until it settles out. What your temps though. There will be a point that you will either be at your max Voltage or the system starts to get too hot for comfort.
 

wquiles

Member
Joined
Oct 22, 2003
Location
Dallas, Texas
You are doing great temp-wise so far. Your goal should be to stay at or below 60C at load or lower (but Prime95 stable).

Given your low temps I would try increaseing the Vcore 0.050 volts until you get at least 30 minutes of stable Prime95 performance (don't run anything else in the PC).

Once you get there, you can then try decreasing the Vcore by the smallest amount alowed in the BIOS until you can't run Prime stable. Now you have the two limits to work with.

Once you find a Vcore that works, you should try to run Prime for at least 12 hours to make sure. If your system passes this, you are golden.

If this does not work, you might need to consider increasing the voltage to the memory as well. Memory is also stressed by Prime95.

By the way, I just finished doing this exact same process in my AMD Dually :)

William
 

crimedog

Member
Joined
Nov 2, 2003
Location
South of Boston
just keep in mind that your board will undervolt the core by about .05v. This means that you're running stock voltage. I have to turn it to 1.75v (1.7v really) to run 2.2ghz.
If I were you overclocking, I'd find the max usuable fsb at 2-2-2-11 (your board will more than likely max out before your ram) and then work the multis and voltages while keeping the max fsb.
Have fun
 
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K

kramer1974

Registered
Joined
Dec 17, 2003
thanks guys. I actually just loosened my timings to 2-3-3-11 and at 215 x 11...i am at 35 mins on prime95 and no errors! My barton is locked so no go at working the multis...my cpu is running at 40 at the moment. My vcore is at 1.725...so im running at 2372mhz right now. I would like to hit 2450, maybe 2500. I think ill slowly get there.
 
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kramer1974

Registered
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Dec 17, 2003
i actually made a mistake on the vcore. I am running 1.775 but temps still were at 41C load with the prime95 torture test for about 40 mins. I am just doing the test that allows me to work on the puter at the same time.
 

Papsomax

Member
Joined
Dec 28, 2003
Location
Kansas City area
Well at lease you guys are getting into the 200 + fsb ranges!

I must be one of very few ocers with an MSI KT6 Delta-Sata mobo and a barton 2500. I've loosened the dram timings 7-3.5-3-2.5 and raised the vcore to 2.0 but the best combo I get is 12.5x192 (2400) which is not stable on prime and my load temp goes to 50. My stable setup is 184x12.5 with 25 hrs prime no errors. I have an SLK900A with 92mm Vornado at full speed plus 4 80x25 case fans and a 600 w dual fan power supply, with 512 OCZ PC 3200, a Radeon 9500 Pro and 2x100 Sata, Raid 1. I guess I should have come to this board first before I got an MSI board. I now know VIA chips aren't the best for ocing compared to nvidia chipset.

1. XP 2500 (187x12.5) 2. XP 2200 (140x13.5) 3. P4 1.7 (OEM) 4. P4 1.8 (OEM) 5. Dually in process
 
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kramer1974

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Dec 17, 2003
Ok i just ran prime95 on 217fsb at 1.8 vcore and 2.7 vdimm on my pc3500 mushkin lvl 2...ran for just over an hour...ughh....thought this was it...
 
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kramer1974

Registered
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Dec 17, 2003
alright im at 2390mhz 1.8 vcore 2.7 vdimm with 2-3-3-11 timings and ran the prime95 torture test and is still running and its been over 12 hours so im good to go! thanks guys.