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I am running stable in Prime95, at least for 2 hours now. It seems like my cpu has topped out at around 2350mhz. I can do different combination to achieve it, like 215x11, 205x11.5 @ 1.75Vcore. But I just can't get past the 2400 mark, 200x12 wont do either. Prime95 shows SUMOUT error right away upon connection. My temp readings are 42 idle, 48 load, not too bad with air-cooling. I tried raise the Vcore to 1.85 but still the same error. So I dont think Vcore helps. My memory timings are 2-2-2-5. I dont know if it's the ram's fault. Cuz I can run it fine at 215FSB and 205 FSB. What can I do next??

_____________________
AMD 2500xp-m @ 2360mhz/1.75V
Abit NF7-S v.2.0
Corsair Twinx1024 PC3200XLPT 2-2-2-5
WD Caviar SE 80GB/8mb
WD Caviar SE 120GB/8mb
BenQ 52x32x52 CD-RW
Asus 9600XT 128MB @575/650mhz
Creative Live!Value
Cambridge Soundworks FPS2000 Digital
Thermaltake Volcano 12
Raidmax Cobra822 w/420w
Stepping: AQYHA 0431
 

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Quote:


Originally Posted by uomomoschino

I am running stable in Prime95, at least for 2 hours now. It seems like my cpu has topped out at around 2350mhz. I can do different combination to achieve it, like 215x11, 205x11.5 @ 1.75Vcore. But I just can't get past the 2400 mark, 200x12 wont do either. Prime95 shows SUMOUT error right away upon connection. My temp readings are 42 idle, 48 load, not too bad with air-cooling. I tried raise the Vcore to 1.85 but still the same error. So I dont think Vcore helps. My memory timings are 2-2-2-5. I dont know if it's the ram's fault. Cuz I can run it fine at 215FSB and 205 FSB. What can I do next??

_____________________
AMD 2500xp-m @ 2360mhz/1.75V
Abit NF7-S v.2.0
Corsair Twinx1024 PC3200XLPT 2-2-2-5
WD Caviar SE 80GB/8mb
WD Caviar SE 120GB/8mb
BenQ 52x32x52 CD-RW
Asus 9600XT 128MB @575/650mhz
Creative Live!Value
Cambridge Soundworks FPS2000 Digital
Thermaltake Volcano 12
Raidmax Cobra822 w/420w
Stepping: AQYHA 0431

Have I raped you on CS:S?

totally off topic but your name rings a bell somewhere...
 

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Discussion Starter #3
Quote:


Originally Posted by muffin

Have I raped you on CS:S?

totally off topic but your name rings a bell somewhere...

??...Nope. I have never played CS:S :shades2: . Only CS and HL2.
 

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Quote:


Originally Posted by uomomoschino

??...Nope. I have never played CS:S :shades2: . Only CS and HL2.

meh, ignore me.
 

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Quote:


Originally Posted by uomomoschino

I am running stable in Prime95, at least for 2 hours now. It seems like my cpu has topped out at around 2350mhz. I can do different combination to achieve it, like 215x11, 205x11.5 @ 1.75Vcore. But I just can't get past the 2400 mark, 200x12 wont do either. Prime95 shows SUMOUT error right away upon connection. My temp readings are 42 idle, 48 load, not too bad with air-cooling. I tried raise the Vcore to 1.85 but still the same error. So I dont think Vcore helps. My memory timings are 2-2-2-5. I dont know if it's the ram's fault. Cuz I can run it fine at 215FSB and 205 FSB. What can I do next??

_____________________
AMD 2500xp-m @ 2360mhz/1.75V
Abit NF7-S v.2.0
Corsair Twinx1024 PC3200XLPT 2-2-2-5
WD Caviar SE 80GB/8mb
WD Caviar SE 120GB/8mb
BenQ 52x32x52 CD-RW
Asus 9600XT 128MB @575/650mhz
Creative Live!Value
Cambridge Soundworks FPS2000 Digital
Thermaltake Volcano 12
Raidmax Cobra822 w/420w
Stepping: AQYHA 0431

It might have, I know I have an AQYHA, or something like that. It starts with an A, too. I have to pump 1.9 vcore into it to get it to 2.5ghz. I tried for 2.6, but it wouldn't work, no matter what combo I did. I guess some of us have the less-than-satisfactory overclockers. It's not a bad overclock, your system is pretty nice, too. Did you also check your power supply's rails, those play a major part in overclocking. Fluctuating rales = fluctuating vcore
 

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The combination of your memory running faster than it should and also at low latency could be the problem. Try putting it to cas2.5 or something like that, just to test.
 

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Quote:


Originally Posted by xms

The combination of your memory running faster than it should and also at low latency could be the problem. Try putting it to cas2.5 or something like that, just to test.

and up the RAM and if nec the n-bridge voltage a bit!
 

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Quote:


My memory timings are 2-2-2-5. I dont know if it's the ram's fault.

loosen the ram timmings and up the voltage to them a bit
2.0-3.3.7 or 2.5-3.3.7 would allow you to go alot higher with your fsb

amd prefers x.x.x.7 or x.x.x.11 for best performance no matter what your ram is rated at. i have mushkin LII with default 2.0-2.2.5 and it runs and benches better with 2.0-2.2.7

you also might up the agp voltage a hair since that seems to clear up oc issues on that motherboard
 

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Discussion Starter #9
Quote:


Originally Posted by foneone

loosen the ram timmings and up the voltage to them a bit
2.0-3.3.7 or 2.5-3.3.7 would allow you to go alot higher with your fsb

amd prefers x.x.x.7 or x.x.x.11 for best performance no matter what your ram is rated at. i have mushkin LII with default 2.0-2.2.5 and it runs and benches better with 2.0-2.2.7

you also might up the agp voltage a hair since that seems to clear up oc issues on that motherboard

I tried setting the timing at 2.5-4-4-11 but still no luck. I will try up the AGP and/or chipset voltage. Heck, maybe I will try 2400 with 1.9Vcore, as long as the temp is alright, and computer is stable, I can keep increasing Vcore right?
 

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Quote:


Originally Posted by uomomoschino

I tried setting the timing at 2.5-4-4-11 but still no luck. I will try up the AGP and/or chipset voltage. Heck, maybe I will try 2400 with 1.9Vcore, as long as the temp is alright, and computer is stable, I can keep increasing Vcore right?

1.85v is the max without modding and it should get you to 2500-2550 area
 

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Discussion Starter #11
Quote:


Originally Posted by foneone

1.85v is the max without modding and it should get you to 2500-2550 area

I now upped the chipset voltage to 1.7V, which is max on my Nf7-S.
It can run stable at 2400/1.8Vcore in Prime95, at least for 1.5 hours. (202x12=2424, 2-3-3-7) I am trying to get it to 2500. It will boot but freezes when I start Prime95. I need to raise the Vcore to at least 1.9V. Should I go further? I am only on aircooling with TT Volcano 12. Also, does ram timing affects the overall clock speed or just the FSB?
 

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Quote:


Originally Posted by uomomoschino

I now upped the chipset voltage to 1.7V, which is max on my Nf7-S.
It can run stable at 2400/1.8Vcore in Prime95, at least for 1.5 hours. (202x12=2424, 2-3-3-7) I am trying to get it to 2500. It will boot but freezes when I start Prime95. I need to raise the Vcore to at least 1.9V. Should I go further? I am only on aircooling with TT Volcano 12. Also, does ram timing affects the overall clock speed or just the FSB?

-timmings are only an issue for fsb above and beyond the specs of the ram

curious is your processor brand spanking new?
 

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Discussion Starter #13
Quote:


Originally Posted by foneone

-timmings are only an issue for fsb above and beyond the specs of the ram

curious is your processor brand spanking new?

Yes it is. I just installed it yesterday.
Does it matter?

I upped my Vcore to 1.95 but still SUMOUT error in Prime95. Sigh.
I dont think my ram is faulty. Its a pair of Corsair Twinx1024 PC3200XL-TCCD.
I can run it at 2-2-2-5/2.6V @ 215 FSB no problem.
 

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Quote:


Originally Posted by uomomoschino

Yes it is. I just installed it yesterday.
Does it matter?

I upped my Vcore to 1.95 but still SUMOUT error in Prime95. Sigh.
I dont think my ram is faulty. Its a pair of Corsair Twinx1024 PC3200XL-TCCD.
I can run it at 2-2-2-5/2.6V @ 215 FSB no problem.

back off it to where you are majorly stable and prime95 it for several days (as many as you can spare 2-7 days depending on who you talk to)...you need to break it in/burn in. it makes a lot of difference.

also if you oc'd that much that fast you didnt let the thermal paste set properly and you will have higher temps than you could of had...not that it is a huge deal but when it is 4-5c down the road it will be a bigger deal.

watch your temps and make sure they dont exceed 55c.
 

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Discussion Starter #15
Quote:


Originally Posted by foneone

back off it to where you are majorly stable and prime95 it for several days (as many as you can spare 2-7 days depending on who you talk to)...you need to break it in/burn in. it makes a lot of difference.

also if you oc'd that much that fast you didnt let the thermal paste set properly and you will have higher temps than you could of had...not that it is a huge deal but when it is 4-5c down the road it will be a bigger deal.

watch your temps and make sure they dont exceed 55c.

If i just up my multi and leave FSB at 200...then it should limit the problem that might cause by ram or mobo right? At FSB 200, multi 12.5, i cant get it to stable under Prime95, does that mean my CPU is limit to 2500mhz?

Also, I dont turn on my computer 24/7...only when i needed it. So if I overclocked to a certain speed 'though Prime95 cant take it, but if its fine in gaming or word-processing, can I consider it stable, according to my usage?
 

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Quote:


Originally Posted by uomomoschino

If i just up my multi and leave FSB at 200...then it should limit the problem that might cause by ram or mobo right? At FSB 200, multi 12.5, i cant get it to stable under Prime95, does that mean my CPU is limit to 2500mhz?

Also, I dont turn on my computer 24/7...only when i needed it. So if I overclocked to a certain speed 'though Prime95 cant take it, but if its fine in gaming or word-processing, can I consider it stable, according to my usage?

i oc'd mine for 2 months @ 12x200 running the hell out of it before pushing it past 2500 stable...reguardless of how you want to run it you really need to break it in good before pushing beyond 2400 (leave it running running prime95, folding, or anyother burnin program)

-to answer your Q...upping the multi will help with fsb issues however i have found that .5 multipliers do not do as well in oc's as whole numbers 11.5 less stable than 12 etc.
 

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Discussion Starter #17
1) If I just run my computer like several hours a day, 2500mhz is stable under gaming, watching videos....etc, BUT not Prim95. It will sometimes freeze, sometimes SUMOUT error, sometime blue screen. But can I keep it at that speed if I dont run Prime95?

2) Which part of hardware failure will cause i) blue screen, ii) SUMOUT error, iii) computer freeze totally?

Thanks
uomomoschino
 

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See my profile for my results with my XP-M 2400

I'm held back by my memory right now (with cooling close behind).

I have Corsair XMS CP2700 C2 RAM in the 256MB+256MB+512MB config. It is stable at 188MHz @ 2.7V, 2.5-3-3-11. I can't complain seeing as its only rated for 166MHz.

I could probably get the processor higher but my A7N8X v1.04 seems to not do multipliers higher than 12.5 (Even though its has higher in the BIOS)

That's ok. 2.35GHz at only 1.65V is fine with me. It gets as hot as 52C now with my "silent" fan.
 
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