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The Opteron Skt 939 Overclocking thread !!!!

I'd do 1.7 if I could but my stupid motherboard (DFI NF3) undervolts like crazy. No matter what I set it to in the BIOS, it won't do more than 1.6v. So I'm stuck at 2.7. Still happy, but slightly jealous of those with the same chip stepping who are getting more.
 
Well I've tried putting default +0.6v in which equates to voltage varying between 1.68v and 1.6v. I've found some detailed settings for DFI NF3 and BH5 memory so I'm now testing at 2800 with 2-2-2-10 1T with RAM at 166 divider (so 240Mhz) at 3v. LDT Vcore up to 1.75v. Temps are OK but the cooling is temporary as I'm using my 172mm fan on the radiator which even at 12v - instead of its rated 24v - is a little loud.

EDIT: Failed SuperPi at 280, down to 275.
 
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MikeTimbers said:
Well I've tried putting default +0.6v in which equates to voltage varying between 1.68v and 1.6v. I've found some detailed settings for DFI NF3 and BH5 memory so I'm now testing at 2800 with 2-2-2-10 1T with RAM at 166 divider (so 240Mhz) at 3v. LDT Vcore up to 1.75v. Temps are OK but the cooling is temporary as I'm using my 172mm fan on the radiator which even at 12v - instead of its rated 24v - is a little loud.

EDIT: Failed SuperPi at 280, down to 275.
Click to expand...
Have u tried overclocking one thing at a time? i.e use a 133mem divider. I dont have a setting for LDT (been told its adjusted with chipset voltage), but 1.75v? U sure thats safe? I have used 1.65v for about a month on my opteron (sure its stable at less but when u get a jump in temperature running prime it needs 1.65v near enough with 7v or 12v 120mm fan. Its not the best but good for 3Ghz 24/7 stable with elevated voltage.

I ran a xp2500+ mobile on water @ 2v for 2years, and it didnt die. If they are going to die they die fast imo.
 
According to DFI-Street's FAQ on the DFI NF3 UT you need 1.75v on the LDT to get over 275. I did try running at 133 divider putting the RAM at under 200 but the increased "speed" reduced the actual performance. I've seen stats that seem to show that 1T vs. 2T is not as big a deal as some like to think, so I'll probably try really reducing the pressure on the cpu's memory controller by running slacker timings but if the 1M SuperPi times are slower, why bother? I mean, having a nice headline overclock is fun but it's more important to actually have a quick, responsive system.
 
Its rule #1 in the overclocking handbook, overclock one thing at a time (as far as possible).

You seem to be having trouble getting 2.8Ghz all Im suggesting is not to overclock memory at the same time because it just confuses the issue. No one else will be able to determine what is causing the instability either if ** overclocking everything at once.


Memory is only there to feed the cpu, graphics card, I would put cpu speed first and anything else is a bonus, AMD 64-bit with its LDT is not memory subsystem limited.

I was running my memory at 150Mhz at one point and the only place u could tell the difference was looking at synthetic memory tests. Running memory at 100Mhz will not make your system "unresponsive" due to the 1000Mhz LDT (even more so with 1Mb level 2 cache.

"LDT Vcore up to 1.75v. "

That is not particularly clear, and stifles any possible help or advise u recieve.
 
I'll try taking the memory out of the equation.

EDIT: After getting to 2.85GHz but at nearly 1.7v and with slower memory, I've relaxed it down to 2.7GHz again with kinder voltage all round and faster memory. It's a reasonable clock out of a poor stepping and much quicker than the XP-M it replaced.
 
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Hi guys, been a long time since ive posted on the boards just want a bit of advice.

Im looking at getting an opteron 144,146 cpu and clocking it for all it will go :D , what im worried about is this,

My specs

Athlon 3500+ newcastle
Abit Av8 3rd eye mobo
Crucial Ballistix pc4000
tagen 480w psu
74gb raptor

My current chip plays up trying to go any higher than 2.4 mgz i can get my ram to go as high as 270 before any problems. now if i change the 3500+ for a 144/146 how much of boost in performance will i get.
How will the rest of my spec handle with a opteron 144/146 what would you suggest? whats the multi on the 144/146?

Cheers for replys in advance any help/suggestion welcome epsecialy people with similar specs :)

=GAMMO=
 
tatts said:
most peoples fluctuate like yours but id worry because its dropping below blue lines (under 3.3 & 5)
Click to expand...

A? have you read the ATX specs? ,they allow a 5% variance ,granted I wouldn't really want to go that far out, but ReeMISM's voltages are well inside that so he has nothing to worry about.

Another point though is that he's using readings from the bios & these can be very inaccurate ,so unless he has confirmed them with a multimeter they are more or less meaningless.

ReeMISM
If its not too late don't adjust the PSU voltages based solely on the bios/MBM readings ,you could end up over volting your setup!
 
Clint you cracked 3.1gig! sweet! so did I!! this chip is simply overwhelming me!!!!!

I slightly upped the voltage to get it just under the 1.4volt mark and prime stable at 3.1ghz, then upped the ram voltage to 2.8v and switched to the 166 divider. and got it prime @ 3.15ghz but only for 17mins. so I opened my bedroom window for about 3 hours and got my room good and cold and look what happened.....!

note the load temps, took a quick screen cap while priming. this zalman cooler is doing its job!



I re-thought my case cooling and its made all the diff, try it m8!!

I'm crackin 7000 on the cpu score now for 3dmark2005 (after mb driver update)!!! all my winnie could do was 5100!
 
Hesky That is ***** awsome.

Id love it if my baby could do them speeds. Altho it will boot at 3.1Ghz and
pass super PI 1meg but then it fails Prime in secons.

I supose ill have to make do with 2.95Ghz Prime stable at 1.5v.
 
stability probs

having some problems getting my opty 146 to prime. s&m and superpi run fine but unless i drop the ram divider to 100 prime will crash within 2 hours. I'm running an msi k8n neo2 platinum with 2x 512 ballistix pc4000

I've run prime for 24 hours at stock with the chip and am currently running at 2.9ghz with 290htt, 10x multi, 3xht and ram at 166.cpu volt is 1.45 and ram at 2.8 v.

It's really annoying and i just can't figure out the prob. anyone got any ideas
 
2876.jpg


Zalman CNPS7700-ALCU fan
146 CABYE
ASrock 939S56-M
SiS756 chipset

Doesn't matter what I set the HTT to, higher than 287 it just sets it at 287 :confused:
 
Hesky82 said:
Clint you cracked 3.1gig! sweet! so did I!! this chip is simply overwhelming me!!!!!

I slightly upped the voltage to get it just under the 1.4volt mark and prime stable at 3.1ghz, then upped the ram voltage to 2.8v and switched to the 166 divider. and got it prime @ 3.15ghz but only for 17mins. so I opened my bedroom window for about 3 hours and got my room good and cold and look what happened.....!

note the load temps, took a quick screen cap while priming. this zalman cooler is doing its job!



I re-thought my case cooling and its made all the diff, try it m8!!

I'm crackin 7000 on the cpu score now for 3dmark2005 (after mb driver update)!!! all my winnie could do was 5100!
Click to expand...


Maronne!!

3.1Ghz @ 1.4 volts...that is just crazy!
I had to pump in another 0.1 volt to make that mark, but I'm dragging those HyperX modules as well..

So what do you think about those modules I mentioned earlier?
 
hum, I wouldnt like to say Clint. I myself want to upgrade to 2gig in the very near future but I'm unsure they will let me keep my oc. the 2gig sets I've seen people use to good effect on dfi/opty setups are those Mushkin Redline XP4000's and Crucial ballistix PC4000's newguy over on the dfi forum is getting fantastic speeds with his 2gig ballistix's and 702-bta bios on low'ish divider.

http://www.dfi-street.com/forum/showpost.php?p=295177&postcount=563

really can argue with that!

either way the real world performance boost you will get with 2gig of ram will be worth it!
 
either way the real world performance boost you will get with 2gig of ram will be worth it!
Click to expand...

Yeah i agree 100%, its obvious that allready 2GB is needed allready yet many say its not.

Ok there may only be a few games that demand it at the moment BF2 being one of them. But its still needed.

Im also gona go with 2GB but im unsure yet as to what to get, Ill have to decide
what to sell, my OCZ plat Elite TCCD chips or my Mushkin UTT 2-2-2-5 250Mhz modules.
 
Hesky82 said:
hum, I wouldnt like to say Clint. I myself want to upgrade to 2gig in the very near future but I'm unsure they will let me keep my oc. the 2gig sets I've seen people use to good effect on dfi/opty setups are those Mushkin Redline XP4000's and Crucial ballistix PC4000's newguy over on the dfi forum is getting fantastic speeds with his 2gig ballistix's and 702-bta bios on low'ish divider.

http://www.dfi-street.com/forum/showpost.php?p=295177&postcount=563

really can argue with that!

either way the real world performance boost you will get with 2gig of ram will be worth it!
Click to expand...

Ok, gonna look further... ;)
 
yeah, I like to have a bit of headroom with my ram, not getting it with 1gig of ram anymore. if you have some good performing 1gig sets now would be a good time to sell imo.
 
Hesky82 said:
yeah, I like to have a bit of headroom with my ram, not getting it with 1gig of ram anymore. if you have some good performing 1gig sets now would be a good time to sell imo.
Click to expand...

Yes, did sell my 2x512mb Kingston Valueram today and trying desperately to get rid of them HyperX modules..

Did get them for netprice without tax (25%) so I will not loose much if any.. :D
 
Well my friend is wanting a build so i could get rid of some of my stuff.

I think im gona sell my Opteron which has trouble hitting 3Ghz for around £170, he is gona game so i supose this is a good buy for him as he wants a fast rig.

Im not sure if i should give him some of my Ram, i supose ill have to explain the situation and see what he says but my OCZ Plats would be a good buy for him at £120 im sure.

I really need 2GB in this Gaming rig ive got. I doubt ill sell the Mushkin as for £105 new i cant expect more than £70-80 + i love the buggers.
 
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