The Official Opteron 939 Overclocking Thread

I have a little prob, at a certain OC pehraps someone can give me some idea:

It's concern stability during SP2004, i have launch a SP 2004 Blend Test at 3144mhz, 262x12, 2.5-4-4-10 ( large timings for test normally i use 2.5-3-3-7 at 260mhz)
DFI expert last beta bios. (12/07)
TCCD600 OCZ Elite

The test pass without warning and errors i have take a screen at 1H20minutes, complete timings with the A64Tweakers,
http://img153.imageshack.us/img153/3007/114ty.jpg

No problem so far..
...But if i launch the SP2004 Large FTT test (DRam stress), the PC lock up, and i need reboot manually... for the blend test i have put alot of Vcore, but it pass with lower voltage.. I have the feel this is more a PSU prob but i don't understand.. i can imagine the Large FTT test give error after 30-40 minutes if the blend test pass but not lock up directly after 2 sec..

I command a Enermax liberty 620W for replace the TT 680W monday with G-skill Utt Bh5 3200 for play with them but i m not sure the prob is only that..
Some advice?

Quote:

---

Originally Posted by pancake

Anyone else experienced a drop in needed volts to make your chip stable over time?
When i first got my opteron 146 it needed 1.6v to be stable @ 3g or 3.1g, now a couple of months on its stable with only 1.52v @ 3g its saved me about 3c in load temps aswell on my watercooling.

What htt is everyone running? my old winchester never liked anything over 1000 so i always ran 3 x htt, but this opty runs fine at 4 x 300

---

I also have had the same drop in voltage required. need 1.62v to Prime at 3Ghz stable. I run it at that for around 3mths, once i removed the IHS its now SOLID in primt at 1.52v :D

Also lads are the CABYE 0540 FPAW Cold BUGGED?

Nothing special but here it is - Opty 148 with IHS removed & on water;
http://img148.imageshack.us/img148/328/prime27kt.jpg


How about a rendertest at 3.2GHz?
http://img489.imageshack.us/img489/5...0320ghz4ks.jpg

:)

28C @ burn???:eek:

Quote:

---

Originally Posted by skaktuss

28C @ burn???:eek:

---

:woot:

Actually no!

DFI Expert mobo reports too low CPU temp, I'd say add 8-10 'C to those 28'C.
That's closer to the truth.

Btw, removing the IHS reduced load temp by 4-5 'C.
And it's water ...

( It's a cacje but the exact stepping I've forgot )

:)

Opty 146 CAYBE, 3.2Ghz @ Default volts. Benchable @ 3.5Ghz. Best chip i've ever owned :)

C-Buzz

Thats amazing CPU you got :O

Hello guys, what do you think about this cpu ?

AMD Opteron 148 - OSA148DAA5BN - CABCE 0520MPMW

Quote:

---

Originally Posted by C-BuZz

Opty 146 CAYBE, 3.2Ghz @ Default volts. Benchable @ 3.5Ghz. Best chip i've ever owned :)

C-Buzz

---

you lucky man

Quote:

---

Originally Posted by neoman

Thats amazing CPU you got :O

---

ta :)

I actually clockgened it all the way to 3.28GHz while priming before straight BSOD. So i'd say around 3.23/3.25 24/7 on default volts :)

C-BuZz

nice one for sure

i forgot to ask you have you dropped the multi and tested where the HTT cold bug limit is :)

Quote:

---

Originally Posted by dinos22

nice one for sure

i forgot to ask you have you dropped the multi and tested where the HTT cold bug limit is :)

---

Heya dude :)

Havent tried that yet, I'll give it a crack later on tonight after I finish up regassing me SS.

C-BuZz

Hello,

I just got my new CPU and want to start overclocking.

some specs...

Asus a8v deluxe
2gb corsair TWINX2048-3200 3-3-3-8
Antec 480W True Power
Thermaltake Tsunami Dream Case

some stock non overlclocked settings

2:1 DDR 400
bank interleaving AUTO
Burst Length 4 beats
CAS 3
TRAS 8
TRP 3
TRCD 3
TRRD 2T
TRC 11T
TRFC 14T
TRWT AUTO
TWCL AUTO
TWR 3
aysnclat AUTO
read preamble setting 5.5ns
2t command DISABLE

CPU FSB 200mhz
CPU mult 10x
CPU voltage 1.350v
agp/PCI 66.66/33.33
vdimm 2.8v

Seems that the ram and cpu combo are a little sensitive. Any suggestions on how to relax the RAM timming so I can get a decent overclock and still get past system post.

Nice chip under water :)

http://www.beforeoverclock.com/image...%23429Temp.jpg
http://www.beforeoverclock.com/image...23429Vcore.jpg
http://www.beforeoverclock.com/image...9Temp@3103.jpg
http://www.beforeoverclock.com/image...Vcore@3103.jpg
http://www.beforeoverclock.com/image...3429SP2004.jpg
http://www.beforeoverclock.com/image...9SCPU@3103.jpg

Quote:

---

Originally Posted by dinos22

nice one for sure

i forgot to ask you have you dropped the multi and tested where the HTT cold bug limit is :)

---

refuses to boot @ 355HTT lol..

C-BuZz

Quote:

---

Originally Posted by C-BuZz

refuses to boot @ 355HTT lol..

C-BuZz

---

it could be something else

i found that with my HTT cold bug Windows XP 32-bit will freeze during loading and 64-bit windows after a few seconds in windows.......soooo i guess it could be some other timings....just play with MAL/RP more and TRFC and some other values.....:)

you sure that motherboard can do more than 355MHz......i checked mine on air before phase to be 100% sure and it did 32M superpi at 400Mhz easily....and could go up to 420Mhz before it starts playing up

It just dawned on me that you do not have the going to Germany picture up. What happened?

Quote:

---

Originally Posted by dinos22

it could be something else

i found that with my HTT cold bug Windows XP 32-bit will freeze during loading and 64-bit windows after a few seconds in windows.......soooo i guess it could be some other timings....just play with MAL/RP more and TRFC and some other values.....:)

you sure that motherboard can do more than 355MHz......i checked mine on air before phase to be 100% sure and it did 32M superpi at 400Mhz easily....and could go up to 420Mhz before it starts playing up

---

when I say refuses to boot I mean refuses to boot into Windows, just freezez @ 355HTT loading windows. Not really worried about it to much, as I can still bench @ 10x351 :)

C-BuZz

Hello,

I just got my new CPU and want to start overclocking.

some specs...

Asus a8v deluxe
2gb corsair TWINX2048-3200 3-3-3-8
Antec 480W True Power
Thermaltake Tsunami Dream Case

some stock non overlclocked settings

2:1 DDR 400
bank interleaving AUTO
Burst Length 4 beats
CAS 3
TRAS 8
TRP 3
TRCD 3
TRRD 2T
TRC 11T
TRFC 14T
TRWT AUTO
TWCL AUTO
TWR 3
aysnclat AUTO
read preamble setting 5.5ns
2t command DISABLE

CPU FSB 200mhz
CPU mult 10x
CPU voltage 1.350v
agp/PCI 66.66/33.33
vdimm 2.8v

Seems that the ram and cpu combo are a little sensitive. Any suggestions on how to relax the RAM timming so I can get a decent overclock and still get past system post.

:D 3GHz@1.39V under water

http://www.beforeoverclock.com/image...%23139Temp.jpg
http://www.beforeoverclock.com/image...23139Vcore.jpg

Well done before :)

Thx mate! :toast:

CACJE 0602GPMW w/o IHS

I was able to prime 9x334 or 3ghz @ 1.45 with 45C's load.

Wasn't able to do 9x345 or 3.1 ghz @ 1.5 or 1.55. Load temps got too high.

I remember reading CACJE was sensitive to temps so I decide to remove the IHS and now I get these results!

http://www.johnshim.com/forums/xtrem...imetesting.jpg

testing prime right now! :)

specs in sig

Geez...my 146 primes at 300x10 with v1.62 volts and only hits 40C under load...

Put the 144 back in and took out the dc. This is the same cpu as in post #1 of this thread. It is still one of the better 144's that were made or are still being made.

http://img349.imageshack.us/img349/8...20759zq.th.jpg

This cpu has given me more pleasure then any other I've owned.