The AMD Phenom II OC'ers Club

[johnnyfiive]

well i've been stable at 4.0ghz for about 5 days no problems passed 50 passes of linx max mem with no problem. thing i'm finding wierd is that i can run 3.9 stock voltage but 4.0 takes 1.53v which leads me to believe that something else is the culprit... i find it rediculously odd that the voltage jump from 3.9 to 4.0 a total of .13v which is huge imho.

another question is that i'm not sure how man threads i should choose in Linx? I chose one for now as i'm only running 1 core at a time.. is this correct??

Sounds like my 920 D0. I can do 3.6GHz at 1.15v, 1.18v load. But 4.0 takes 1.31-1.33v load and 4.2 takes 1.34-1.35v load. It's not a 100MHz difference like you're case, but the voltage needed for 400MHz is kinda retarded.

 

[exodusprime1337]

Sounds like my 920 D0. I can do 3.6GHz at 1.15v, 1.18v load. But 4.0 takes 1.31-1.33v load and 4.2 takes 1.34-1.35v load. :shadedshu

well i'm on my 2nd core at 4.0 and still haven't had to up the voltage, got my fingers crossed. Haven't even gotten to acc yet

 

[PaulieG]

ASUS Crosshair III or MSI GD70 are the top two boards followed by the Gigabyte UD5P.

Kei

I wouldn't mind hearing about the MSI board for those with some experience with it. It's on my top 3 list. I'm just not sure about MSI. I've owned 3 of their boards through the years, and all of them were crap.

 

[exodusprime1337]

I wouldn't mind hearing about the MSI board for those with some experience with it. It's on my top 3 list. I'm just not sure about MSI. I've owned 3 of their boards through the years, and all of them were crap.

honestly as i've posted repeatedly over the last 3 or 4 days, get an asus m4a79t the thing is incredible, you'll love it..

 

[exodusprime1337]

Hey Kei, pretty sure this is common sense, but what if all 4 cores fail at 4.0.. just up the voltage one tick at a time till only a couple fail?

 

[Kei]

Hey Kei, pretty sure this is common sense, but what if all 4 cores fail at 4.0.. just up the voltage one tick at a time till only a couple fail?

Yes, you want to find a point where a single core or two cores fail. Then start to work on getting that stable, once you've got that core stable if it's the only one...you now know which is the weakest.

You can only clock as high as it will go stable so find out what you need to do in order to get it stable at it's highest speed. Remember you will need more voltage to run all your cores at the same speed simultaneously so if you need to raise the voltage to a large amount for a specific core it's time to cut your losses and lower the cpu speed a notch.

As for the number of threads, 1 is fine when testing the single cores by themselves. I do the samething and run the test for 5 minutes to see if it fails. If it doesn't fail then I up the speed and test again until it fails. Do that for each core seperately and you have a nice roadmap to how your cpu likes to run.

Kei

 

[exodusprime1337]

kk thanx cores 2,3 have failed, core 1 passed, when 2-3 failed they failed 4 mins in to the 5 minute run, i understand i'll need more volts for all 4 cores, i'm jusst working my way up, hoping to see what cp gets with his, i'll be posting mine after the acc runs

 

[Kei]

Forgot to say that your voltages needed for the 3.9Ghz to 4.0Ghz jump are about the same as mine. I'm using a C2 model and air cooling which is different of course, but I can do 3.8Ghz @ 1.35v on cores 0 & 1. Those two same cores will run 3.9Ghz for a few before failing, however cores 2 & 3 both failed at 3.8Ghz and needed a small bump in voltage and a touch of ACC to be stable.

When going up to 4Ghz I tested all the cores stable at 1.53v no problems. I never did test them at lower voltages at 4Ghz individually, but I'll work on that tomorrow perhaps. I do know that I was not able to quite get 4Ghz with all four cores stable at 1.53v however. It only made it 82% of the way through a wPrime 1024 run though that alone is still rather impressive with air cooling.

All four cores simultaneous testing booting from the bios (Core 2&3 both with -2% ACC enabled)

3.8Ghz @ 1.42v passed with no problems
3.9Ghz @ 1.47v passed with no problems
4.0Ghz @ 1.53v not quite...but damn close

Kei

 

[exodusprime1337]

well at stock 1.4 volts it looks like core 2 went by at 4.0ghz with no voltage increase and a +2 adjustments to acc, i'm going to try core 3 here now and see if i can stabilize it


Edit, btw you are teh effin man/woman whatever you are, your guide was incredibly easy to understand and the acc options might actually help me figure out what i'm doing here, i've always just given a chip as much volts as i can to keep it under 55c at full load and gone at it with reckless abandon, for some odd reason the availability of such tweaking options has given me great insight into oc'ing the amd platform and has made me quite excited. thank you so much!!!

 

[Chicken Patty]

Ok here are my core by core testing results:

Core 0 - 4127 MHz - PASS

Core 1 - 4127 MHz - PASS

Core 2 - 4127 MHz FAIL after 1 minute.
ACC -2= No effect
ACC -4=passed 1.5 minutes
ACC -4 +1 notch vcore=longer FAIL
ACC -4 +2 nothces vcore=PASS

Core 3 - 4127 Mhz FAIL after 40-45 seconds
ACC -2 No effect
ACC -4 No effect
ACC -4 +1 notch vcore= longer fail
ACC -4 +2 notches vcore=PASS

I found to have the ACC set as follows best for my rig.

Core 0 - 0
Core 1 - -2
Core 2 - -4
Core 3 - -4


I noticed that for my setup setting ACC for any given core on the positive #'s ended up in either instant crash when upping the clock or very quick crashes once LinX started running. Negative seems to work for me.

 

[Kei]

btw you are teh effin man/woman whatever you are...thank you so much!!!

lol, I'm a man though I've heard of women named the same....they usually spell it Kay or something like that though

I'm glad I could help! That's what I'm here for, and why I love TPU so much...it gives me purpose haha.

Kei

(btw, great results those C3's are ridiculous...I've been eyeing newegg thinking of getting a new 955 for myself )

 

[Chicken Patty]

lol, I'm a man though I've heard of women named the same....they usually spell it Kay or something like that though

I'm glad I could help! That's what I'm here for, and why I love TPU so much...it gives me purpose haha.

Kei

(btw, great results those C3's are ridiculous...I've been eyeing newegg thinking of getting a new 955 for myself )

I'll sell you my 965 for $999.95 I'll include the MEGA

 

[exodusprime1337]

Ok here are my core by core testing results:

Core 0 - 4127 MHz - PASS

Core 1 - 4127 MHz - PASS

Core 2 - 4127 MHz FAIL after 1 minute.
ACC -2= No effect
ACC -4=passed 1.5 minutes
ACC -4 +1 notch vcore=longer FAIL
ACC -4 +2 nothces vcore=PASS

Core 3 - 4127 Mhz FAIL after 40-45 seconds
ACC -2 No effect
ACC -4 No effect
ACC -4 +1 notch vcore= longer fail
ACC -4 +2 notches vcore=PASS

I found to have the ACC set as follows best for my rig.

Core 0 - 0
Core 1 - -2
Core 2 - -4
Core 3 - -4


I noticed that for my setup setting ACC for any given core on the positive #'s ended up in either instant crash when upping the clock or very quick crashes once LinX started running. Negative seems to work for me.

what voltage cp??

and kei, thanx for clarifying, i now a lot of you guys and gals talk often with each other, i feel like a bit of an outsider but i'm working my way in. almost done with my acc tests

 

[Chicken Patty]

what voltage cp??

and kei, thanx for clarifying, i now a lot of you guys and gals talk often with each other, i feel like a bit of an outsider but i'm working my way in. almost done with my acc tests

Default, 1.392v

 

[exodusprime1337]

damnit yours is looking better i can't get by 4.0 yet, one core still giving me trouble

 

[Chicken Patty]

damnit yours is looking better i can't get by 4.0 yet, one core still giving me trouble

Try negative ACC, positive totally kicked my ass!

 

[Kei]

Ok here are my core by core testing results:

Core 0 - 4127 MHz - PASS

Core 1 - 4127 MHz - PASS

Core 2 - 4127 MHz FAIL after 1 minute.
ACC -2= No effect
ACC -4=passed 1.5 minutes
ACC -4 +1 notch vcore=longer FAIL
ACC -4 +2 nothces vcore=PASS

Core 3 - 4127 Mhz FAIL after 40-45 seconds
ACC -2 No effect
ACC -4 No effect
ACC -4 +1 notch vcore= longer fail
ACC -4 +2 notches vcore=PASS

I found to have the ACC set as follows best for my rig.

Core 0 - 0
Core 1 - -2
Core 2 - -4
Core 3 - -4


I noticed that for my setup setting ACC for any given core on the positive #'s ended up in either instant crash when upping the clock or very quick crashes once LinX started running. Negative seems to work for me.

Awesome CP, thanks a billion+1 for posting your results as well. I've also found that a + setting in ACC for the most part has adverse affects on stablity for my system as well. The only core that responded 'well' to a + setting in ACC was Core 3...but it still failed in the end anyway. +2 lasted barely longer, +4 lasted 5 minutes but failed after the test finished within 10-20 seconds. The other core (2) would fail almost instantly just like yours when I tried a + setting.

I've been using 0,0,-2,-2 for my system so far though on a different bios setting it's time to check another setting or two. For those who want to be lazy please note that just setting ACC to -2% on all cores can cause instablity if a core doesn't actually need it.

Kei

 

[Kei]

I'll sell you my 965 for $999.95 I'll include the MEGA

as long as it comes with the Mega...that's a good deal right? :shadedshu

And exodus...you're part of the family here to me.

Kei

 

[Chicken Patty]

Awesome CP, thanks a billion+1 for posting your results as well. I've also found that a + setting in ACC for the most part has adverse affects on stablity for my system as well. The only core that responded 'well' to a + setting in ACC was Core 3...but it still failed in the end anyway. +2 lasted barely longer, +4 lasted 5 minutes but failed after the test finished within 10-20 seconds. The other core (2) would fail almost instantly just like yours when I tried a + setting.

I've been using 0,0,-2,-2 for my system so far though on a different bios setting it's time to check another setting or two. For those who want to be lazy please note that just setting ACC to -2% on all cores can cause instablity if a core doesn't actually need it.

Kei

Yeah I noticed that the last two cores didn't really need much of ACC as it didn't do much effect but I gave it some anyways. I might try them with just the vcore bump and without ACC to see how they do tomorrow or something.

as long as it comes with the Mega...that's a good deal right? :shadedshu

And exodus...you're part of the family here to me.

Kei

Yep, the Mega makes that a good deal

 

[Super XP]

What boards support the 965 out of the box?

If you plan on building a AM3 based setup I would recommend the MSI 790FX-GD70 AM3 Motherboard which should support the 965 without a bios update. This mobo is the best AM3 mobo in the market right now IMO.

 

[Chicken Patty]

If you plan on building a AM3 based setup I would recommend the MSI 790FX-GD70 AM3 Motherboard which should support the 965 without a bios update. This mobo is the best AM3 mobo in the market right now IMO.

The Crosshair III seems to be giving people amazing results, but not sure if it suppots it without a BIOS update,

 

[exodusprime1337]

as long as it comes with the Mega...that's a good deal right? :shadedshu

And exodus...you're part of the family here to me.

Kei

thanx a lot man i appreciate that

 

[Super XP]

The Crosshair III seems to be giving people amazing results, but not sure if it suppots it without a BIOS update,

Yes the Crosshair III is a great motherboard but lacks features unfortunately. I would either go for the Asus M4A79T or the MSI which the MSI beats out both in features and stable OC's from reading reviews.

 

[erocker]

If you plan on building a AM3 based setup I would recommend the MSI 790FX-GD70 AM3 Motherboard which should support the 965 without a bios update. This mobo is the best AM3 mobo in the market right now IMO.

I was able to boot into bios and flash to a supported bios with an unsupported bios with my M4A79T Deluxe if that helps.

 

[exodusprime1337]

I was able to boot into bios and flash to a supported bios with an unsupported bios with my M4A79T Deluxe if that helps.

i had to rma mine, bios was suffering from "groundhog day syndrome" they sent me a brand new one, and this one is cranking lol