x2 3800 Owners - OC's

pumpman · 31 Jan 2006 at 21:37

what are you running your mem at Tim ? ie timing speed voltage nice clock on that voltage

loltim · 1 Feb 2006 at 00:49

Default timings so probably something ugly like 8-4-4-3.0 2T, it seems its all about the MHz though with A64's, you see little performance hit by running the mem dividers and slack timings.

Thats on a DDR333 divider so its running at 217MHz, and 2.7v.

Edit- yep 7-4-4-3.0

4Qman · 3 Feb 2006 at 23:17

3800 X2 LDBHE 0601 VPMW

Ok this is a new stepping and the chip is brand new. I put her in & turned it to 2.8Ghz on 1.5v straight away and it booted into windows.

Ive lowered the Vcore to 1.48v and its priming at 2.7Ghz 2Hr+ as we speak.

This is me 2nd 3800X2 and a massive improvement.

The best news is its on AIR. ill post results once i find the highest stable OC, especially when i plug her in my DFI water cooled rig

FX60 Eat ya Heart OUT.

pumpman · 3 Feb 2006 at 23:50

nice cpu you got there 4Q

4Qman · 4 Feb 2006 at 00:06

pumpman said:
nice cpu you got there 4Q

Thanks mate,

I lowered it to 1.45v and to 2.6Ghz as my ram can only hit 260ish and its still solid in prime. Ill keep it folding tonight and im sure it will be stable still in the morning.

It boots at 2.85Ghz 1.5v but fails prime so im sure some more vcore would solve that.

Looks like the 3800 is still best bang for buck X2 without a doubt

Update tomorrow with findings. Night

loltim · 4 Feb 2006 at 01:37

Wouldn't hold your breath, I've had a LDHBE 0601 for a week or so, it isn't prime stable over 2.7GHz even with 1.7v (see above) The annoying thing is one of the cores is capable, the others dragging it down.

It'll run Prime for hours at 2.6GHz 260HTT 1:1 though which I'm happy with.

4Qman · 4 Feb 2006 at 09:46

I had it priming for over 3hrs at 2.7Ghz without a problem. The max i can use
is around 1.5v on this board which sucks.

Im going to keep it at 2.6Ghz 1.45v as its solid and ill try more in my DFI.

Tim,
But im impressed with this chip its better than my last 3800 X2. That wouldnt boot at 2.8 even with higher Vcore. I was going to go for a 4400 and im glad i didnt.

sablabra · 4 Feb 2006 at 10:06

mine is at 2.5ghz with stock Vcore. 250x10

4Qman · 4 Feb 2006 at 11:29

sablabra said:
mine is at 2.5ghz with stock Vcore. 250x10

My other 3800 X2 could do 2.4Ghz 1.325v Dual Prime stable 18Hr+. I think the
increase on the 3800 is around the 2.5+ mark. Well its what it seems to be like on this new one and the other.

Have you seen what the max is mate and what stepping is it.

King_Boru · 4 Feb 2006 at 11:49

Hit a nice 2.6Ghz this morning. Put plenty of volts through it to make sure it it possible. Gradually taking the volts down but havnt got time at the moment. But screenie below.

sablabra · 4 Feb 2006 at 12:00

4Qman said:
My other 3800 X2 could do 2.4Ghz 1.325v Dual Prime stable 18Hr+. I think the
increase on the 3800 is around the 2.5+ mark. Well its what it seems to be like on this new one and the other.

Have you seem what the max is mate and what stepping is it.

Unfortunately my asrock 939dual sata2 won't let me increase the Vcore

. I haven't checked the stepping, because I would have to remove my cooler then. It's hard work to take the scythe ninja on and off... But it seems stable at 2.55ghz too, at least in occt, but I get random reboots in battlefield 2 for some reason.

loltim · 4 Feb 2006 at 12:36

Forget OCCT and run Prime95 on each core. Copy Prime95.exe to 2 different directories and open both. Set affinity on each, core0 on one and core1 on the other.

If it returns no errors after 3-4hrs I'd consider it stable but others (including me) tend to run it twice as long as that.

4Qman · 4 Feb 2006 at 16:37

Tim,

Me also, ive had overclocks fail on 8hrs so i run for around 12Hrs when i consider
it a Max final OC.

I also leave my rig folding a lot and it will soon crash within 24hrs if its a weak OC.

King_Boru · 4 Feb 2006 at 18:48

As long as it plays games for about 4 hours without a crash I would call it stable enough.

Now got my X2 3800+ at 2.6ghz with 1.475v

.

sablabra · 5 Feb 2006 at 21:55

I got my up to [email protected] now

. Totally stable. Who needs an fx-60?

Unfortunately I can't increase Vcore any further, but I'm sure I can do [email protected] if I lower the ram divider a bit more.

Metalface Mark · 5 Feb 2006 at 23:30

I just picked up my new X2 3800 today, does anyone know anything about this stepping?

CCBWE 0528XPMW i was told it was a toledo core, are these better/worse than the manchesters?

sablabra · 6 Feb 2006 at 19:22

InwardSinging said:
I just picked up my new X2 3800 today, does anyone know anything about this stepping?

CCBWE 0528XPMW i was told it was a toledo core, are these better/worse than the manchesters?

Of course it's an manchester

. Basically, a x2 3800+ is a manchester which consists of 2x3200+(venice), which means that it has 2x512kb L2 cache. However, if you move up to x2 4400+ or x2 4800+ you will get a toledo, which basically consists of 2x3700+(san diego) or 2x4000+(san diego), which means that it got 2x1mb L2 cache

pumpman · 6 Feb 2006 at 21:21

sablabra look at the first page of this thread

x2 3800 can be Manchester and Toledo core

sablabra · 6 Feb 2006 at 21:32

pumpman said:
sablabra look at the first page of this thread x2 3800 can be Manchester and Toledo core

How come that be, when they are supposed to be manchester cores? AMD says it too: http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_9485_13041^13076,00.html

deviousdragonuk · 7 Feb 2006 at 23:51

Hi there guys!
Well i've been watching the scores on the doors and want to add my own now! i've done Prime 95 for a good few hours and seems stable so all good! tho is 57 max too hot??

My settings for the table are:
Clock 2700MHz
HTT 270MHz
RAM 200MHz
Ram timings 2-3-2-6-1T
V Core 1.525V
HT x 3
Core Manchester
Cooler Zalman CNPS9500LED
stable
GA-K8NXP-SLI

Tho i dont know how to post pics of screen or links? someone going to enlighten me please! fairly new to forums! lol

Cheers! Deviousdragonuk