Dothan overclocking thread

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05-26-2005, 05:19 AM
Kamerat

Quote:

Originally Posted by NoX

I did the U-wire mod, thx for the hints :D . Vcore is now locked on ~1.55v. I cannot lower it. :( The BIOS doesn't show any Vcore option. EIST and CPUMR still show the same voltage range 0.988-1.356 but don't work for the vcore adjustments anymore. I am kinda worried because the crappy stock HSF keeps the temp in the 55+ range. This after that I replaced the original thermal paste with arctic silver and got a ~10C improvement Is a 1.5+V vcore safe for 24/7 use? Any suggestion on how to lower the vcore to something like 1.4v?

Anyway, the Dothan is cool. So fragile and light but also freaking powerful. I improved my own SuperPi record. Close to break 24 sec with OCZ EB 1:1 3228 3.2v In the meanwhile I completely :banana::banana::banana::banana:ed up my awesome 9800 pro and I got a x700pro as temporary replacement. I will do some 3D testing later this week.

Damn nice piece you got there man, mine does 150 MHz less with stock cooler and 1,55V. :( There isn't any danger running it at 55-60°C. :)
05-26-2005, 05:28 AM
Lithan

Quote:

Originally Posted by Malachia

fsb400 dothan bug is between 170 and 200mhz ;)

So is there some way I can change my multi to run 200mhz+?
05-26-2005, 06:12 AM
Gautam

Quote:

Originally Posted by Kamerat

The allmighty soldering iron. :D
Remove the plastic that sorrounds it first and desolder the pins one by one.

Use the iron to melt the plastic?
05-26-2005, 06:13 AM
Lithan

Just pull it off. It's not attached any way except fitting snugly on the pinns unless Im mistaken. I ripped the Plastic floppy molex connectors off dozens of 9700/9800 cards.
05-26-2005, 06:30 AM
Malachia

Quote:

Originally Posted by Lithan

So is there some way I can change my multi to run 200mhz+?

with fsb400 no...you need a 533 to go above 200 fsb...
05-26-2005, 06:37 AM
Lithan

Damn. A 730 would have been perfect too. 12 is just the multi I need. Wish I had done more research before I bought. My 1.5 is pretty good (Priming at 2.5ghz 1.39vcore now), but I know I could hit 2.7ghz+ if it wasn't for this 170-200 problem.
05-26-2005, 06:41 AM
Ychocky

Quote:

Originally Posted by Gautam

Use the iron to melt the plastic?

Wriggle a knife blade in.

Mine were hardly attached.

Got my P4P800-SE yesterday.

Just need a 730 now.

Oh and the new bios to come in the mail!
05-26-2005, 07:25 AM
Lithan

Where can you buy a 730 cheapest in the US?
05-26-2005, 07:33 AM
Gautam

Ok, thank you folks.

I got my 730 for $165 off of ebay.
05-26-2005, 07:41 AM
Ychocky

Quote:

Originally Posted by Gautam

Ok, thank you folks.

I got my 730 for $165 off of ebay.

Sounds like a good deal.

MWave looks like a good source in the US.

Anyone here in Canada? If so, where did you get your Dothan! :D

I'm sick of paying duty on stuff from the states. It doubles the price sometimes.
05-26-2005, 10:33 AM
Firefoxx

Hey Guys,
I set up my Dothan Rig:

P-M 730 U-Wire Mod => 1,55V
Asus P4C800-E + CT479
512MB Twinmos BH5

I cannot go anything above 2350MHz stable with it, can this be?
I can't imagine that 2350 is all, a dothan can do?!
05-26-2005, 10:39 AM
Malachia

bro easy to know, try at lower v-core, if you can reach same frequency isn't the cpu :)
05-26-2005, 10:47 AM
Gautam

Quote:

Originally Posted by Firefoxx

Hey Guys,
I set up my Dothan Rig:

P-M 730 U-Wire Mod => 1,55V
Asus P4C800-E + CT479
512MB Twinmos BH5

I cannot go anything above 2350MHz stable with it, can this be?
I can't imagine that 2350 is all, a dothan can do?!

Try booting at above 200MHz.
05-26-2005, 10:49 AM
Firefoxx

So, with 1.25V-1.3V I can go @ 2250MHz stable..I'm really frustrated...Does anybody know something?

Booting with >200MHz doesn't work :(
05-26-2005, 10:56 AM
Bennah

Anyone tried 4 sticks of UTT in a P4C800-E and a Dothan by any chance without any problems ?
05-26-2005, 11:20 AM
Gautam

Your mobo vdimm modded?
05-26-2005, 11:27 AM
Firefoxx

Quote:

Originally Posted by Gautam

Your mobo vdimm modded?

Do you mean me?

Mine's not modded, do you think the kyosen mod is necessary?
05-26-2005, 12:37 PM
Bennah

Quote:

Originally Posted by Gautam

Your mobo vdimm modded?

It will be one way or another... voltage wouldnt be an issue. I was asking do Dothans on a P4C800-E DLX like 4 sticks of mem.
05-26-2005, 01:08 PM
uclajd

I'll assume you are scaling the FSB via Windows. I've found I can go higher with Clockgen if I don't jump the FSB all at once, creep up the clocks in 2 or 3 steps. If I go 2000-to-2700 in one step, freeze. But if I go 2000-2400-2700 it usually works.

Quote:

Originally Posted by Firefoxx

Hey Guys,
I set up my Dothan Rig:

P-M 730 U-Wire Mod => 1,55V
Asus P4C800-E + CT479
512MB Twinmos BH5

I cannot go anything above 2350MHz stable with it, can this be?
I can't imagine that 2350 is all, a dothan can do?!
05-26-2005, 01:16 PM
Gautam

Yep I observed the same with my A64, uclajd.

Re the vdimm mod, I was talking to Firefoxx. 512meg modules of BH5 tend to be touchy, especially when you don't volt them right.
05-26-2005, 03:24 PM
NoX

Has anybody found out how to get different CPU voltages on the p4C800E?
Right now it's either 1.356V (unmodded) or 1.55V (u-wire mode). This sucks! :cussing:
05-26-2005, 04:14 PM
Gautam

Vcore mod it I guess...its what I'm doing.
05-26-2005, 04:55 PM
PseudosaneX

Quote:

Originally Posted by Gautam

How in the hell are you supposed to remove those connectors?

Well, I burnt my finger and broke a pin on the adapter tonight. There is a place you can get pins fixed, but the site is being worked on and I can't get their contact information.

Just another day away from getting my rig set up, boo hoo

I hope you had better luck than I did Gautam
05-26-2005, 05:16 PM
charlie

you all don't need to REMOVE those pins, just cut them flush to the pcb then solder the wires on, lol...

C
05-26-2005, 06:01 PM
alpha0ne

Quote:

Originally Posted by charlie

you all don't need to REMOVE those pins, just cut them flush to the pcb then solder the wires on, lol...

C

Yep, just some wire cutters or pliers and just snip/rip it off, how hard is that :)

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