The Opteron Skt 939 Overclocking thread !!!!

rxmac · 21 Dec 2005 at 18:54

Fitted my 148 today and had a little play so far it benches at 3ghz and is super pi stable running the 32meg calculation, and it runs folding at home for several hours GREAT i thought 3ghz stable lets play some fear but it wont play that for more than 20 min or so

. Set it to 2.9 and everything, including fear, is fine.

Any suggestions as to why fear seems to cause instability?

Probably going to get shot down for this but personally not a huge fan of progs like prime etc as i have had systems that are 24/7 stable running what i want eg folding 24/7, gaming (for several hours im not quite that sad that i play for 24 hours solid) without any probs yet they fail within seconds on prime so seems a pointless exercise to me :rolleyes:

i mean if it does what i want when i want for as long as i want then thats stable to me, yet prime says otherwise???

Sweetloaf · 21 Dec 2005 at 19:24

rxmac said:
Any suggestions as to why fear seems to cause instability?

Unsure but maybe becaue the Gfx card at load has a pretty large draw on the PSU, it's causing minor fluctuations to cause instability.

I try to run RTHDRIBL while stress testing, otherwise your sytems PSU isn't really giving a good indication of real world use.

I do use prime but i don't see how, simply because prime is saying you are stable, people expect to be able to always run without a hitch.

Surely all components need to be drawing max power and running to claim 100% stability?

could be wrong..it's happened before

*edit-This Post was sponsored by Kronenbourg

Clint · 21 Dec 2005 at 19:31

Hesky82 said:
same as yours clint, FPAW I'm trying to get a prime stable 3.2ghz at 1.4v I sware it can do it!

edit: the batch code of the cpu is 50459

Hehe, thats kinda wild...my cpu has 50460!!!

No need to ask where you bought it, or when..lol!

Hesky82 · 21 Dec 2005 at 20:17

lol yup! at a bargain price also, b4 they got the price hike!! another guy over on the xs forum has a cabye with 2 numbers less than mine on the batch code and his was getting 3.1ghz with less than 1.5volts, looks like the high numbers get the hi clocks with these week 40's, thank god!

Clint · 21 Dec 2005 at 20:28

Heh, sounds nice! ..gonna change bios and see if I can match your numbers...

Read somewhere though that if you undervoltage the CPU and giving to much to the LTD you can fry the CPU...dunno if it's true or not.

Hesky82 · 21 Dec 2005 at 22:07

Hesky82 · 22 Dec 2005 at 00:49

Another night of tweaking and I managed to get my system 3ghz prime stable at stock volts

love this dfi board to bits! cpu's not bad either

really on a stock volt oc mission!

Sumanji · 22 Dec 2005 at 01:49

Is ANYONE using Corsair XMS with their Oppy/DFI combo? I would really like to know the best settings to use... played around but my memory controller doesn't seem to like Infineon chips at all

Cheers,

Suman

Hesky82 · 22 Dec 2005 at 03:07

there maybe a few guys over on the dfi-street forum with sim setup to you, the unofficial opteron thread is nearly 1000 posts big now.

Clint · 22 Dec 2005 at 12:48

I meant LDT ofcourse..

Very nice OC there, at stock volt...dammit!

I can't get even close, but then it's pretty easy to figure out that it's the RAM that ain't up to par...gonna order me some decent ones.

mp260767 · 22 Dec 2005 at 14:14

rxmac said:
Fitted my 148 today and had a little play so far it benches at 3ghz and is super pi stable running the 32meg calculation, and it runs folding at home for several hours GREAT i thought 3ghz stable lets play some fear but it wont play that for more than 20 min or so . Set it to 2.9 and everything, including fear, is fine.

Any suggestions as to why fear seems to cause instability?

Probably going to get shot down for this but personally not a huge fan of progs like prime etc as i have had systems that are 24/7 stable running what i want eg folding 24/7, gaming (for several hours im not quite that sad that i play for 24 hours solid) without any probs yet they fail within seconds on prime so seems a pointless exercise to me i mean if it does what i want when i want for as long as i want then thats stable to me, yet prime says otherwise???

try running a few loops of 3dmark05.

similar happens with bf2 it can be very iffy with overclocks.

up the voltage to cpu and memory slightly then try the 3ghz/fear again

rxmac · 22 Dec 2005 at 16:11

My memory was at max volts my mobo can supply, 2.85v, as was the cpu volts @ 1.5ish i think my mobo undervolts

http://photobucket.com/albums/y1/mac124/?action=view&current=superpi32mstable.jpg

Hesky82 · 22 Dec 2005 at 17:33

Clint said:
I meant LDT ofcourse..

Very nice OC there, at stock volt...dammit!

I can't get even close, but then it's pretty easy to figure out that it's the RAM that ain't up to par...gonna order me some decent ones.

hey clint, have you messed about with different max async latencies and read premable time settings in the dram config? like ken said ages ago.....

I found out its the key to OC

also messing about with the read/write q bypass and bypass max multiples may help drag that dram and vcore down.
suman, any break throughs with your corsair ram yet??

farooqm · 22 Dec 2005 at 22:13

Hesky82 said:
hey clint, have you messed about with different max async latencies and read premable time settings in the dram config? like ken said ages ago.....
also messing about with the read/write q bypass and bypass max multiples may help drag that dram and vcore down.
suman, any break throughs with your corsair ram yet??

Hesky82 - Could you put up a screengrab of your settings in A64Tweaker? 3Ghz @ 1.3x volts. pls ???

Ahh... Ive just seen your post on Page 62 with your settings.... are they still the same for 3Ghz or are they different.?

Hesky82 · 22 Dec 2005 at 23:48

yup still the same

Sumanji · 23 Dec 2005 at 00:16

Hesky82 said:
suman, any break throughs with your corsair ram yet??

Nope

got shot down on DFI Street as well. Will prolly just say sod it and stick with 280HTT... oh well!

Cheers,

Suman

Hesky82 · 23 Dec 2005 at 01:08

I was hoping they could help, doh

thats the prob with dfi-street they all to regularly get on there high horse and make stupid thoughtless assumptions, and then carry on being pedantic until the thread gets locked. which is annoying because they dont half know about dfi motherboards!
They should have searched themselves before they open there mouth, because I myself couldnt find anything "specifically" relating to Corsair XMS ram on dfi/opteron systems.

4Qman · 23 Dec 2005 at 01:30

Ive got a 146 CABYE 0545 FPAW and it runs super PI at 1.4v 32MB stable
at 3Ghz. But will fail prime in but a few minutes.

Ive had it pass prime for hours at 2.9Ghz with around 1.4v however will fail 3Ghz even with 1.55v.

Im using the DFI Expert and have the Chipset at 1.7v and LDt at 1.4 just for good measue. Ive also had the ram pass memtest for hours so it not that and had it on a divider.

I take it im unlucky with my chip.lol

Well thats if 2.9Ghz is unlucky, Im burniing in the Chip tonight at 3Ghz 1.4v to see if this will help.

Hesky82 · 23 Dec 2005 at 02:13

4qman, I assume your on the 166 divider with that ram, try what n3x did. let us know if prime runs for longer.

n3x said:
Prime fails on my oppy after a couple of minutes when ive got it over 2.8ghz with the ram on a 166 divider but its fine if i put the ram on a 133 using the same volts so give that a shot if u havnt already, i have only upped the volts by +0.075 on the cpu so its around 1.55v's now and all seems nice n stable, although quite hot

Clint · 23 Dec 2005 at 05:26

Hesky82 said:
hey clint, have you messed about with different max async latencies and read premable time settings in the dram config? like ken said ages ago.....
also messing about with the read/write q bypass and bypass max multiples may help drag that dram and vcore down.
suman, any break throughs with your corsair ram yet??

Well, I'm using the 2/01 divider on the RAM when OC'ing the CPU so I think it should be out of equation.
Hmm, gonna plug that 623-3 bios you are using and copy your settings right off...It just CANT be that much difference in our CPU's...but then again, if you have sucky sticks and we know the memcontroller CAN be tricky + those DFI boards aint that happy mating with them Kingston RAM's...I'm pretty sure it's the sticks thats gotta go. :rolleyes:

btw, did you burn in your CPU in any certain way?