The Official X2 Overclocking Discussion Thread

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06-23-2005, 01:53 PM
s7e9h3n

Quote:

Originally Posted by bigjohns97

Do you know what he got when just running one instance of spi?

Not at that speed, but here's his spi1m single cpu @ 245:
http://xtremesystems.org/forums/atta...chmentid=32686
06-23-2005, 02:28 PM
joe2004

Quote:

Anandtech noted, in thier article on overclocking the 4200+, that heat increased exponentially with voltages over 1.55v.

Yes, you will not be able to control voltages over 1.6 with air cooling. It is way above 150W of dissipation therefore you would need phase change.
This is now the question how good the chips are and where can they go on default voltage. Or 10 lb heatsinks with 200 mm fans. :D
06-23-2005, 03:20 PM
NickK

Quote:

Originally Posted by s7e9h3n

Not even close ;) :
TDP of 4600+ (2 x 2.4, 512K) = 110W
TDP of 3800+ (1 x 2.4, 512K) = 89W
X2 draws only ~24% more current

Hmm - I looked for the AMD specs a few days ago, no mention of X2s in the power consumption charts.

If that's the case then you an air cool them but it'll be loud!

Had my old Barton at 2.03Vcore on air. IIRC that worked out close to 100W at the overclock it was doing.
06-23-2005, 03:26 PM
s7e9h3n

Quote:

Originally Posted by NickK

Hmm - I looked for the AMD specs a few days ago, no mention of X2s in the power consumption charts.

If that's the case then you an air cool them but it'll be loud!

Had my old Barton at 2.03Vcore on air. IIRC that worked out close to 100W at the overclock it was doing.

*sigh* thinking back to the good ol' days of 2.0Vcore on air *sigh*

http://img253.echo.cx/img253/3613/b031727069qp.jpg
06-23-2005, 04:38 PM
ewitte

Well it looks like with a little work I'd at least be able to get a 1M pi @ 3Ghz :) Just need to burn it in a little bit. I got 4 interations at 3.05Ghz before I got the not exact in round error. Of course that was at 1.7v and just a single instance ;) Temps still under 40C! I think that would change with both processors under heavy use though.
06-23-2005, 05:08 PM
s7e9h3n

Quote:

Originally Posted by ewitte

Well it looks like with a little work I'd at least be able to get a 1M pi @ 3Ghz :) Just need to burn it in a little bit. I got 4 interations at 3.05Ghz before I got the not exact in round error. Of course that was at 1.7v and just a single instance ;) Temps still under 40C! I think that would change with both processors under heavy use though.

Hhehehe, no need to "think" :p: , it most definately will. Trust me, you'll notice ;) Oh, BTW, 1.7Vcore - that's gotta take some serious huevos to try :p: I didn't even go that high with my phasechange and the 4600's.
06-23-2005, 06:04 PM
ewitte

Quote:

Originally Posted by s7e9h3n

Hhehehe, no need to "think" :p: , it most definately will. Trust me, you'll notice ;) Oh, BTW, 1.7Vcore - that's gotta take some serious huevos to try :p: I didn't even go that high with my phasechange and the 4600's.

Just temporary and single core tests. I actually ran S&M at 1.65v (both cores) and in a few minutes the highest I saw was 45C.

Eric
06-23-2005, 06:05 PM
s7e9h3n

Quote:

Originally Posted by ewitte

Just temporary and single core tests. I actually ran S&M at 1.65v (both cores) and in a few minutes the highest I saw was 45C.

Eric

Just because you're using one core doesn't mean that only one core's getting 1.7V :p:
06-23-2005, 06:40 PM
xgman

1 Attachment(s)

Progress so far with the 4800+ retail on water at 1.5v set in bios. I think there will be a bit more headway after I figure out a few settings. 32 deg idle temp and 37 deg during a very brief super pi run.
06-23-2005, 06:47 PM
ewitte

Quote:

Originally Posted by s7e9h3n

Just because you're using one core doesn't mean that only one core's getting 1.7V :p:

I just mean it keeps the heat down a bit. My San Diego was always running 1.7v (1.68 windows) ;)
06-23-2005, 07:03 PM
joe2004

Quote:

Well it looks like with a little work I'd at least be able to get a 1M pi @ 3Ghz Just need to burn it in a little bit. I got 4 interations at 3.05Ghz before I got the not exact in round error. Of course that was at 1.7v and just a single instance Temps still under 40C! I think that would change with both processors under heavy use though.

You need to run two instances of singlethreaded applications, like SuperPi for 32 MB and then check when it is a full load.
Post some screenshots, otherwise it is hard to believe what you are saying. The processor like X2-4600 at full load with 1.7V will develop 160W or more dissipation at 3 GHz and I do not know any air cooler that can handle that. But hey maybe you can surprise us with that magic thing of yours.
06-23-2005, 07:29 PM
ewitte

Quote:

Originally Posted by joe2004

You need to run two instances of singlethreaded applications, like SuperPi for 32 MB and then check when it is a full load.
Post some screenshots, otherwise it is hard to believe what you are saying. The processor like X2-4600 at full load with 1.7V will develop 160W or more dissipation at 3 GHz and I do not know any air cooler that can handle that. But hey maybe you can surprise us with that magic thing of yours.

I'm not running air. Its water. S&M runs on both processors and only bumped me to 45C at times. Although I was at 1.67v (1.64v windows) at the time.

Eric
06-23-2005, 07:45 PM
joe2004

Quote:

I'm not running air. Its water.

That makes sense. I guess that will be required for these beasts. Or phase change. ;)
06-23-2005, 09:16 PM
p0tempkin

Anybody testing for 24 hour Prime Stable clocks? I'm still stuck at 2.7GHz on air.
06-23-2005, 09:31 PM
jinu117

Quote:

Originally Posted by p0tempkin

Anybody testing for 24 hour Prime Stable clocks? I'm still stuck at 2.7GHz on air.

Core 1 stops @ 2.6ghz on air... core 2 stops @ 2.75ghz on air. figures... I am stuck wih 2.6ghz now -_-;

PS) I don't call anything stable unless it pass my testings... prime 95 for reasonable time (could be 8 hours i sleep, could be 24+ hours when I am away from home). Memtest86 and memtest windows stable for hours, 3dmark stable, than last but not least, hours of gaming sessions if i can shove them in.
06-23-2005, 10:09 PM
Ender17

Quote:

Originally Posted by p0tempkin

Anybody testing for 24 hour Prime Stable clocks? I'm still stuck at 2.7GHz on air.

what board?
and what chip?
cooling?
06-24-2005, 01:37 AM
NickK

It's arrived :D

Chip numbers:
ADA4400DAA6CD
CCBWE 0517MPMW

The retail heat sink is a copper heat pipe design with alu vanes.

Just have the rest of the day at work to go.. pfftt.. BF2 should turn up later too :D
06-24-2005, 01:46 AM
[timko]

Looks like the premium you paid by ordering from OCuk has paid off then since no other distributor in the UK has managed to get hold of any 4400s to ship yet, only the 4200s so far :)
06-24-2005, 02:07 AM
ewitte

Some Pics :) Tests ran 2.85Ghz 1.584v.

Sandra 64bit
Cinebench 32bit
Cinebench 64bit
Dual 1MB Pi
Temps with two instances of CPU Burn-in

http://s120570057.onlinehome.us/images/x2/1.jpg
http://s120570057.onlinehome.us/images/x2/2.jpg
http://s120570057.onlinehome.us/images/x2/3.jpg
http://s120570057.onlinehome.us/images/x2/4.jpg
http://s120570057.onlinehome.us/images/x2/5.jpg
http://s120570057.onlinehome.us/images/x2/6.jpg
06-24-2005, 03:14 AM
ewitte

Dual 32MB SuperPi. Running 2.806Ghz and lower vcore.

http://s120570057.onlinehome.us/images/x2/7.jpg
06-24-2005, 06:27 AM
xgman

What is the best way/program to burn in both cores at the same time on the X2? Run two instances of "cpu burn-in"? Does that = one for each core automatically?
06-24-2005, 06:35 AM
xgman

Quote:

Originally Posted by ewitte

Dual 32MB SuperPi. Running 2.806Ghz and lower vcore.

Are you getting higher stable clocks at closer to 1.5v or 1.6v?
06-24-2005, 08:15 AM
p0tempkin

Dual SPI 32MB isn't the most reliable CPU stability test, IMHO. Neither is Dual CPU-Burn. Both don't load your CPU or system as much as Dual Prime95 Small FFTs or S&M.

Dual Prime95 Small FFTs usually loads my CPU about 10C higher than Dual SPI or Dual CPU-Burn. S&M loads my CPU even higher than Prime95.

The best way to test full stability is to use all of them.

Memtest+ Test 5 & 8, 25 Passes
Dual Prime95 Small FFTs 24 Hours
OCCT Torture Test & Stability Test
Dual SPI 32M

I found that I needed a bump of +.02v to get my CPU absolutely stable at 2.7GHz. Still on air cooling. No doubt this CPU would do 2.8GHz stable if I was on water, and at least 3GHz on phase.
06-24-2005, 08:30 AM
ewitte

Quote:

Originally Posted by p0tempkin

Dual SPI 32MB isn't the most reliable CPU stability test, IMHO. Neither is Dual CPU-Burn. Both don't load your CPU or system as much as Dual Prime95 Small FFTs or S&M.

Dual Prime95 Small FFTs usually loads my CPU about 10C higher than Dual SPI or Dual CPU-Burn. S&M loads my CPU even higher than Prime95.

The best way to test full stability is to use all of them.

Memtest+ Test 5 & 8, 25 Passes
Dual Prime95 Small FFTs 24 Hours
OCCT Torture Test & Stability Test
Dual SPI 32M

I found that I needed a bump of +.02v to get my CPU absolutely stable at 2.7GHz. Still on air cooling. No doubt this CPU would do 2.8GHz stable if I was on water, and at least 3GHz on phase.

It wasn't supposed to be a stability test. I posted it for the people requesting screenies. If anything it was just to show how long it took.
06-24-2005, 08:51 AM
xgman

Quote:

Originally Posted by p0tempkin

Dual SPI 32MB isn't the most reliable CPU stability test, IMHO. Neither is Dual CPU-Burn. Both don't load your CPU or system as much as Dual Prime95 Small FFTs or S&M.

Dual Prime95 Small FFTs usually loads my CPU about 10C higher than Dual SPI or Dual CPU-Burn. S&M loads my CPU even higher than Prime95.

The best way to test full stability is to use all of them.

Memtest+ Test 5 & 8, 25 Passes
Dual Prime95 Small FFTs 24 Hours
OCCT Torture Test & Stability Test
Dual SPI 32M

Why not just pour gas on it and use a blow torch? :rolleyes:

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