My AMD 3200+ OC experience.... tring to find that Rcok Stable OC.

[ty1er]

I have been trying to get a rock solid stable OC with my AMD 320064 system.

AMD64 3200+ ADA3200DIK4BI CBBFD Winchester
Asus A8V 2.0 / Corsair VR 1024mb PC 3200

It seemd that my AMD 3200+ will never be close to runing around the 2400mhz range.
I have tried runing @ 2400mhz (240x10) Vcore 1.55 and it fails prime in like 3 seconds. So im guessing that no matter what i do, this cpu wont run around that speed.

Then yesterday i figured i would take another stab at OCing this machine.
Running it at HHT 230 x 10 = 2300mhz VC 1.475, PC3200 @ 192, HTx4.
This resulted in Prime95 Large FFTs passed 13 hours. But then i tried Small FFTs and it failed just under 4 hours of testing.
I thought that this PC was stable (or at least prime proof) after passing 13 hours of Large FFTs testing. But i was wrong.

Im guessing that my Problem is my CPU.
Since 2400mhz is out of the question, and 2300mhz fails after hours of testing. I should (hopefully) fine that sweet spot somewhere between 2200, and 2300mhz.

I get the feeling that some CPUs will taper off in stablaty no matter what Voltage you pump into them. Now ill just keep on testing until i can find that spot....
Im just ranting..... anyone else have a simlar experience?

 

[jstarman]

Ty 1er, I have your exact same setup and could not get stable using the 5:3 divider with any combination of settings until I changed to the 3:2 divider. If at 230x10 and ram is running at 192Mhz, then I think you are using the 5:3 divider.

Try changing your divider to 3:2 and bumping up your FSB...it worked for me.

Here is the link to my thread about my OC experience.

http://forums.anandtech.com/messageview...atid=28&threadid=1541810&enterthread=y

 

[Duvie]

That is an odd one.....Large FFT actually test more of the ram and build more heat...the fact it failed the small test is a unique one for me since it is the more cpu isolated one.....

try running the Large FFT again and see if it goes as far again...I have seen where errors after 4 hours are more random then most think....meaning an error after 3 hours but before 24 hours could mean about the same thing....

I have actually never had a system pass 4 hours that didn't do 24 hours.....usually a system for me that fails within 5 minutes or less needs about .05-.075v more of vcocre....If it fails in one hour or less needs -.05-.025v....under 4 hours just a 1 notch of ..025v....remember I isolate my cpu pretty well so I usually can say with a certain when it is a cpu issue of vocre needed....

 

[CaBoOse999]

Originally posted by: jstarman
Ty 1er, I have your exact same setup and could not get stable using the 5:3 divider with any combination of settings until I changed to the 3:2 divider. If at 230x10 and ram is running at 192Mhz, then I think you are using the 5:3 divider.

Try changing your divider to 3:2 and bumping up your FSB...it worked for me.

Here is the link to my thread about my OC experience.

http://forums.anandtech.com/messageview...atid=28&threadid=1541810&enterthread=y

Do you mean 5:6?

 

[jstarman]

Nope...On the Asus A8V Deluxe BIOS, the Memclock to CPU Ratio settings are the following:

1:1 (DDR 200)
4:3 (DDR 266)
3:2 Blank
5:3 (DDR 333)
2:1 (DDR 400)

 

[MrControversial]

Change your memory to DDR 333. The Value RAM can't run at 206. But it doesn't matter anyways since the performance difference is negligible.

 

[DrMrLordX]

Originally posted by: ty1er

Running it at HHT 230 x 10 = 2300mhz VC 1.475, PC3200 @ 192, HTx4.

Why are you using the 4x multiplier? That's a total Hypertransport speed of 1120 mhz. Try the 3x HT multiplier instead.

 

[Koyanisquatsi]

230 x 4 is not 1120. need a calculator?

 

[DrMrLordX]

Eh? woops. Yes!

 

[cbehnken]

Originally posted by: MrControversial
Change your memory to DDR 333. The Value RAM can't run at 206. But it doesn't matter anyways since the performance difference is negligible.

Running Corsair Valueram here at 220 no problems...

 

[ty1er]

Originally posted by: jstarman
Ty 1er, I have your exact same setup and could not get stable using the 5:3 divider with any combination of settings until I changed to the 3:2 divider. If at 230x10 and ram is running at 192Mhz, then I think you are using the 5:3 divider.

Interesting.
Yes i am using the 5:3 divider.
In my adventure of OCing this PC i have been using the 5:3 divider to keep the Ram At or Under the Spec 200mhz.

Originally posted by: jstarman
Try changing your divider to 3:2 and bumping up your FSB...it worked for me.

I quickly read through your post. YOu where getting errors with memtest even when the ram was running under 200mhz? That must have driven you nuts. And to solve this you switched from the 5:3, to 3:2 divider? wierd.

Originally posted by: Duvie
That is an odd one.....Large FFT actually test more of the ram and build more heat...the fact it failed the small test is a unique one for me since it is the more cpu isolated one.....

So the Small FFTs test is more isolated to the CPU, and the Large FFTs uses larger Numbers/calculations in its testing so that ram of the Ram also gets used?
Im going to have to run more over night tests. Testing with Both Large and Small FFTs just to make sure.

I did drop the HTT toe 228 x 10 = 2280 (VC 1.475) and ran Prime95 Small FFTs for 5 Hours without an Error. So i do feel that i am very close to what my PC will run stabile at.

Originally posted by: Duvietry running the Large FFT again and see if it goes as far again...I have seen where errors after 4 hours are more random then most think....meaning an error after 3 hours but before 24 hours could mean about the same thing...

I have actually never had a system pass 4 hours that didn't do 24 hours.....usually a system for me that fails within 5 minutes or less needs about .05-.075v more of vcocre....If it fails in one hour or less needs -.05-.025v....under 4 hours just a 1 notch of ..025v....remember I isolate my cpu pretty well so I usually can say with a certain when it is a cpu issue of vocre needed....

Yeah, that makes sense.

I also have a Feeling (Im just guessing totally on this one) that my Asus A8V under volts a little bit. (I do need to Conferm this by monitoring the VCore from the Bios.)
But when using CPU-Z or Asus Prove the Vcore is always reported lower.
When Running my system at stock Settings VC 1.4, under CPU-Z is showing 1.375 ~ 1.39. It keeps on jumping around, but usually displays the 1.375 reading more.
Im thinking that maybe this is a BIOS related thing. I am running the last Final Bios Version from asus. i think it is 1009. or something.

 

[pudds]

Why don't you try a 9 multiplier? e.g 9 * 266 with a divider on the memory and a 3x HTT