Dothan overclocking thread

[skirms_fr]

yes it is 2 256 bh5 corsair LL3200 + mushkin 3500 lvl2

yes it is under casacde , and the jumper is on fsb400

WR on pm740 is new beatlle with LN² @ 3660

i need ethylen or if with ethylen i cant , ln² on the pm i think, but i thnk too that the chip i915p limit me :/

[AgonxOC]

Now I am having some issues. Last night I benched all 05/03/01 with 2.8Ghz/591/600Mhz on CPU/GPU and played my flight sim for a few. Today I cant even play my damn flight sim. Once it shut off and two other times it froze. What is the problem here? Room temperature is about 2ºC higher.... I need to input guys.

Alex

[BlueWonder]

I had that issue a while back with Need For Speed Most Wanted. It was a combination of running my ram timings to tight and running my GPU to high.
For 24/7 use I have them set @ stock. I found that when it crashed to my desktop it was the GPU and when it restarted all together it was my RAM. Try looser timings or another divider for your RAM maybe even a higher voltage, or if you've got your GPU OC'd bring it back to stock. I spose depending on how far you've pushed your FSB it could be chipset volts too. Experimentation through trial and error is the key.

[AgonxOC]

FSB is only at 215 so its not very high. I am suspecting is the PSU not having enough juice to power both CPU and GPU (X850XT PE eats those Watts). I dont think its the chipset either. OCZ PS 520W is on the way. We will see.

Alex

[Sunin]

I had that issue a while back with Need For Speed Most Wanted. It was a combination of running my ram timings to tight and running my GPU to high.
For 24/7 use I have them set @ stock. I found that when it crashed to my desktop it was the GPU and when it restarted all together it was my RAM. Try looser timings or another divider for your RAM maybe even a higher voltage, or if you've got your GPU OC'd bring it back to stock. I spose depending on how far you've pushed your FSB it could be chipset volts too. Experimentation through trial and error is the key.

I had the same issue with WOW. Had to crank back the memory timing a hair... I was running 2-3-3-5 and was solid in super pi and 06/05/03/01 and wow would lock within an hour. Loosened timings some and walla... no more locks...

[Winterwind]

anyone wants good Dothan 780?
heres mine: http://cgi.ebay.com/ws/eBayISAPI.dll...tem=6846473076
3,5ghz 24/7 stable with Vapochill LS
3,1ghz 24/7 stable with aircooling (AC Freezer 4)

dream cpu for extreme oc-er, prolly will do 3.9 and up with ln2

[skirms_fr]

is it an ES ?

[Winterwind]

is it an ES ?

no, its not ES and it oc-s like mad and likes high multi + high mem speed

[skirms_fr]

max spi 1mo on dothan 740 , 2 x 256 bh5 @ 3.9v

[Malachia]

really nice, but you are on a 21s frequency!!!

[skirms_fr]

i know

but i915 :/

[lawrywild]

nice results Skirms! :thumbsup:

will have a i915 to play with in a couple of days


almost 100pages in this thread

[Movieman]

anyone wants good Dothan 780?
heres mine: http://cgi.ebay.com/ws/eBayISAPI.dll...tem=6846473076
3,5ghz 24/7 stable with Vapochill LS
3,1ghz 24/7 stable with aircooling (AC Freezer 4)

dream cpu for extreme oc-er, prolly will do 3.9 and up with ln2

What's the reserve on that sweet chip?

[skirms_fr]

nice results Skirms! :thumbsup:

will have a i915 to play with in a couple of days


almost 100pages in this thread

i ve bought a p4gd1 for pcie , so for 3D it s a good mb

for pi the best is i865 / 875 but i havent :p

[lawrywild]

i ve bought a p4gd1 for pcie , so for 3D it s a good mb

for pi the best is i865 / 875 but i havent :p

yeh i know, but my p4c800-e blew up and since its my 24/7 rig i decided to move away from AGP at all costs...

[Winterwind]

What's the reserve on that sweet chip?

bid and see it isint much more than regular 780

edit:

hehe, cpu is 3.1ghz 3d/prime stable with Freezer4

[caligula]

Hey guys I need some help here.
I have a p-m 750 perfectly prime stable at 2.63GHz 1.4V on a P4GPL-X, ct-479 with vcca mod, cooling is 7700AlCu. No matter how I increase the Vcore or change the trimmer for vcca, I can't get past fsb 188. As I set 189 or 190, the computer freezes. vdd is already 1.6V, I tried pci-e at 90, 95,100, auto etc still no chance. Max temp is 53C after some minutes in prime95. What can I do to get it past this barrier? Please help!

[lawrywild]

Hey guys I need some help here.
I have a p-m 750 perfectly prime stable at 2.63GHz 1.4V on a P4GPL-X, ct-479 with vcca mod, cooling is 7700AlCu. No matter how I increase the Vcore or change the trimmer for vcca, I can't get past fsb 188. As I set 189 or 190, the computer freezes. vdd is already 1.6V, I tried pci-e at 90, 95,100, auto etc still no chance. Max temp is 53C after some minutes in prime95. What can I do to get it past this barrier? Please help!

have you checked vcore change is working firstly? (confirmed with DMM or bios if you don't have one?)

secondly, have you tried loosening ram timings?

thirdly, upped ram voltage? (i take it you mean something else when you say VDD @ 1.6v)

fourthly, the temp sensor is wrong, minus about 7-10'C from the mobo's reading.

if nothing helps, then your chip has one of the famous walls that dothans decide to hit

[bcn]

for me it seems PCI lock does not work on this mobo, I have the same mobo and I have problems around the same frequency (FSB I mean). and PCI and PCI-E are NOT locked, auto, 100 or whatever. so you up your FSb, you up your PCi and pci-e and you get a frozen image
I have mine at 182FSB ATM becaue it gets me like 45MHz PCI and 120MHz pci-e - higher I ger reboots, eventhough chips and mem are OK for up to 238Mhz

[caligula]

Whoa, I seem to find a solution. Just lowered insanely the resistance of the trimmer and now I can prime at 2.7GHz, 1.55V. Temperature with 7700AlCu is pretty high, close to 60 in full load I ran also superpi at 2.8 but it gets hot like hell and it is unstable. Isn't vdd = vchipset? Also, what fsb termination voltage does? My memory runs upto 285 5-3-3-3 on 2.6V (TCCD) so the timings were pretty loose (8-4-4-3 for any instance). As I increase the fsb, it cracks out at 225 (!?!). Bad, bad, mobo.
lawrywild, I've followed the indications you did in your thread, flashed to 0205 but no difference, I could change vcore with latest bios, so no vcore problem. What I really find funny is that this chip does not even boot or load windows if I increase or decrease the voltage with 0.025V. Pretty tight 10x guys.

Later edit: I got this (see below) after flashing with p4gd1 bios (but I think it is not the case) and increasing vcore to 1.58V in BIOS. Definitely the 7700AlCu is not enough. Will the temperature be lower if I switch to Sonic Tower? Did someone test this on dothan ? Or what other cooling solution on air will be the best?

[AKURA]

Whoa, I seem to find a solution. Just lowered insanely the resistance of the trimmer and now I can prime at 2.7GHz, 1.55V. Temperature with 7700AlCu is pretty high, close to 60 in full load I ran also superpi at 2.8 but it gets hot like hell and it is unstable. Isn't vdd = vchipset? Also, what fsb termination voltage does? My memory runs upto 285 5-3-3-3 on 2.6V (TCCD) so the timings were pretty loose (8-4-4-3 for any instance). As I increase the fsb, it cracks out at 225 (!?!). Bad, bad, mobo.
lawrywild, I've followed the indications you did in your thread, flashed to 0205 but no difference, I could change vcore with latest bios, so no vcore problem. What I really find funny is that this chip does not even boot or load windows if I increase or decrease the voltage with 0.025V. Pretty tight 10x guys.

Later edit: I got this (see below) after flashing with p4gd1 bios (but I think it is not the case) and increasing vcore to 1.58V in BIOS. Definitely the 7700AlCu is not enough. Will the temperature be lower if I switch to Sonic Tower? Did someone test this on dothan ? Or what other cooling solution on air will be the best?

Try removing any shim or unproperly attached ihs from the cpu. It could be what's causing that high temps your getting with your zalman. Just be gentle with the chip though while remounting the cooler. Don't get all too agressive to it. If you get a good mount, you should get a good mid 40C's while running your chip at 2.8Ghz.

[Spajky]

Whoa, I seem to find a solution. Just lowered insanely the resistance of the trimmer and now I can prime at 2.7GHz, 1.55V. Temperature with 7700AlCu is pretty high, close to 60 in full load I ran also superpi at 2.8 but it gets hot like hell and it is unstable....As I increase the fsb, it cracks out at 225 (!?!). ... Definitely the 7700AlCu is not enough.

Did you set adapters jumper to 133Fsb? Temps close to 60°C [onDie Cpu diode reading!] is quite normal full load, since your Cpu so overvolted & OC-ed has real around 50W dissipation ... That cooler should be enough; a problem is elsewhere IMHO ...

[caligula]

Umm... two different oppinions So, are the temperatures good or bad ?

[AKURA]

Umm... two different oppinions So, are the temperatures good or bad ?

Your mb could be reading temps too high....But try reseating your hs for better contact to the cpu. I used to get mid 50C's before I had a shim. Removed it and now I get 34C idle and 44C load. and that is at 2.8Ghz 1.56V but before it was maxing out at 55C load - 60C and idles at 38C. Even at 2.9Ghz with 1.68V my max load would not reach 50C max and this is with a hyper6 and 2 80mm tornado running on low. If you had any experiences with a prescott you will know damn sure what to expect from 60W chip and with same cooler. 2.8A@4.2Ghz 1.56V max load was 55C and that is over 130W+++ of power.

[Siki3d]

OK after getting my system up and running, I played with the 730 a bit
priming now as we speak @2760mhz

I am very pleased with it so far, and that with stock cooler mind you...