X2 3800 + @ 2.7GHz OC on stock (1.4) ** Update with pictures of the proc in OP ** [cpu overclock] [torture test]

Q: I am looking for my X2 3800 + oc stress test, but Im not sure what to run Prime95. I want to run the as:

Small FFTs
In-place large FFTs
Blend

Ive heard this is a major test of a CPU overclocking, and I sure I want to run well if Im going to make running this for 24 + hours.

Thanks each help

Edit: Pic (http://pics.bbzzdd.com/users/guy/X23800.jpg) of the proc. Could someone tell me whether I have the Manchester or Toledo core?


Re:toledo-512; your dad was an opteron 170

Re:yeah i'd like to know why undervolting kill the chips. please give some detail for a noob.

Re:Originally posted by: guy
Jim, even if that is stable, up the voltage a bit–undervolting the chip can cause damage, too (over time).

Humbug. I'd really like to hear your explanation for this.


Re:Why does undervolting damage the CPU (assuming vdimm is within tolerance)?

I am running an X2 3800+ @ 260 x10 using 1.33Vcore


Re:Not sure if I missed it in the post, but what kind of volts are you putting to it?

Re:Did you remember to set the affinity?

Also, stick @ 2.7–2.9 really isn't worth pumping the extra .2volts in, it'll kill the chip a lot faster.

Second, bump the voltage ot 1.425 anyway–definetely necessary, undervolting can kill stuff too :brokenheart:


Re:Man, that is a sweet OC for the 3800. I'm at 2500 with mine and everything is stable and cool. You've got me thinking about trying for 2.7 too. :D

Re:Originally posted by: guy
Well, I finally got the time to run Prime95 for 24hrs. I'm happy to say that my X2 3800+ (http://pics.bbzzdd.com/users/guy/X23800.jpg) is fully stable (http://pics.bbzzdd.com/users/guy/Prime9524hr.JPG) for 24hrs in Prime95 :D

you just won the lottery……(in terms of the chances of winning, not money)


Re:Originally posted by: guy
Well, I finally got the time to run Prime95 for 24hrs. I'm happy to say that my X2 3800+ (http://pics.bbzzdd.com/users/guy/X23800.jpg) is fully stable (http://pics.bbzzdd.com/users/guy/Prime9524hr.JPG) for 24hrs in Prime95 :D

sweet, whats your final oc?

i just noticed this thread, i have the exact same chip, i just gotta figure out which machine its in :)


Re:guy, I see that you did 2870ghz at 1.6vcore, but why is that your multiplier on your SP2004 shows…2870MHz FSB: 194MHz [205MHz x 14.0est.]. Isn't that wrong? Shouldn't it be 10×287? Something doesn't look right there? Looks right on your CPU-Z photo. http://img.photobucket.com/albums/v729/absolute035/overclocking/a5ce43db.jpg

Re:Well, I finally got the time to run Prime95 for 24hrs. I'm happy to say that my X2 3800+ (http://pics.bbzzdd.com/users/guy/X23800.jpg) is fully stable (http://pics.bbzzdd.com/users/guy/Prime9524hr.JPG) for 24hrs in Prime95 :D

Re:http://img248.imageshack.us/my.php?image=2600stable9as.jpg

Use custom with the settings in the screenshot. Use SP2004. GUI interface to Prime95. Store a copy in two seperate folders.


Re:Originally posted by: guy

Originally posted by: guy

Originally posted by: guy
you have the toledo core…..E6

I thought all the 3800's had the newer Manchester core, which was designated by the JH-E6 Revision code?

If the stepping ends in CD, I believe it is always a Toledo core with half the cache disabled… I could be wrong though!

Thats what I've always thought too.


Re:That's about how mine did as well, see if you can do this with 1.6 Vcore

http://img.photobucket.com/albums/v729/absolute035/overclocking/a5ce43db.jpg


Re:Originally posted by: guy

Originally posted by: guy
you have the toledo core…..E6

I thought all the 3800's had the newer Manchester core, which was designated by the JH-E6 Revision code?

If the stepping ends in CD, I believe it is always a Toledo core with half the cache disabled… I could be wrong though!


Re:Originally posted by: guy
you have the toledo core…..E6

I thought all the 3800's had the newer Manchester core, which was designated by the JH-E6 Revision code?


Re:you have the toledo core…..E6

Re:Originally posted by: guy

Originally posted by: guy

Originally posted by: guy
12.5hours stable? did you run two instances of small FFTs? Blend won't be able to fully test the cpu but it tests the memory more

Yep. I did what guy suggested and ran two instances doing small fft's. After I do the 24 hour run, I'll post a screenshot of the completed run.

wow that is a really nice overclock if it can pass 24+ hours…..what's your temperature and what cooler you using?

Thanks :) I have Koolance's Exos Liquid cooling with this (http://www.koolance.com/shop/product_info.php?cPath=29_44&products_id=114) block. Temps usually run in mid to upper 30's. I've tried to go higher than 2.7ghz, and it will post at 2.8+ghz, but no matter what I've tried, I can't get it to boot into Windows. I've taked the core as high as 1.5v.


Re:Originally posted by: guy

Originally posted by: guy
12.5hours stable? did you run two instances of small FFTs? Blend won't be able to fully test the cpu but it tests the memory more

Yep. I did what guy suggested and ran two instances doing small fft's. After I do the 24 hour run, I'll post a screenshot of the completed run.

wow that is a really nice overclock if it can pass 24+ hours…..what's your temperature and what cooler you using?


Re:Originally posted by: guy
12.5hours stable? did you run two instances of small FFTs? Blend won't be able to fully test the cpu but it tests the memory more

Yep. I did what guy suggested and ran two instances doing small fft's. After I do the 24 hour run, I'll post a screenshot of the completed run.


Re:12.5hours stable? did you run two instances of small FFTs? Blend won't be able to fully test the cpu but it tests the memory more

Re:Originally posted by: guy

Originally posted by: guy

Thanks :) I'll report back tomorrow about my oc (2.7ghz @ stock voltage, 1.4)

What your CPU Serial??? MPMW or GPLW???
and In-place large FFTs and Blend are for test which Hardware?

I'm not sure what the serial is. And what is MPMW & GPLW?

Originally posted by: guy
if that cpu passes at 2.7ghz 1.4 volts more than 15-20 minutes in prime95 blend torture ill be supguyd,..lol

Well I let it run overnight, about 12 1/2hrs total, and no problems :) I won't be able to do a 24+ hour test until tonite, so when I get that done, I'll report back on that as well.


Re:Originally posted by: guy
Jim, even if that is stable, up the voltage a bit–undervolting the chip can cause damage, too (over time).

not always…… it depends on your vdimm


Re:Jim, even if that is stable, up the voltage a bit–undervolting the chip can cause damage, too (over time).

Re:yea thats pretty intense oc for 1.4v the 146 im getting dors 2.8@ 1.4 bt its a really good stepping

Re:if that cpu passes at 2.7ghz 1.4 volts more than 15-20 minutes in prime95 blend torture ill be supguyd,..lol

Re:Originally posted by: guy

Thanks :) I'll report back tomorrow about my oc (2.7ghz @ stock voltage, 1.4)

What your CPU Serial??? MPMW or GPLW???
and In-place large FFTs and Blend are for test which Hardware?


Re:that is a really nice overclock if it's 24+ hours stable…..my X2 3800+ needs 1.5V for 2.7Ghz………………btw, stock voltage is 1.35, your motherboard's default is probably set at 1.4…

Re:Originally posted by: guy
small fft but you need to run 2 instances of it since you have a dualcore chip

Thanks :) I'll report back tomorrow about my oc (2.7ghz @ stock voltage, 1.4)


Re:small fft but you need to run 2 instances of it since you have a dualcore chip

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