P 805D overclocked on ECS C19-A SLI

[killerguppy]

I just started overclocking the 805D on an ECS C19-A SLI motherboard. I'm using a Thermaltake Symphony Mini for watercooling the CPU. Temps were 28 C at idle.
Overclocked from 2.66 GHz to 3.63 GHz the temps were 30 C at idle and 41 C
after running Prime 95 for 15 mins. I ran it for several hours afterwards playing WoW with no issues.

When making changes in the BIOS the ECS C19 would not boot if I changed the CPU voltage from Auto to a set value. I have yet to try a higher overclock using the auto voltage setting.

CPU voltage is @ 1.31 V and memory (PNY DDR2 667 Gamer Memory timings are supposed to be 3-3-3-6 but I'm running it at 5-5-5-15) voltage is at 2.0 V @ 3.63 GHz

Updated 7/3/06

I did some further testing today, and now I'm able to change the CPU voltage.
I dropped the memory down to 667 MHz with 4-3-3-8 timings.

I increased my mobo's FSB from 180 to 200 in 5 MHz increments every time running 2 instances of Prime95 for 10 minutes each test. I had to fiddle w/ the CPU voltage and was stable @ 3.95 GHz w/ a voltage of 1.475v.

I increased the voltage to 1.5v and I was able to boot into windows @ 4.0 GHz, but it would lock up after a few minutes running 2 instances of Prime95.

I lowered the FSB from 800 to 775 and booted into windows with no issues. I ran Prime95 several times while lowering the CPU voltage and it is now stable @ 1.45v.

 

[JonathanDeane]

Just keep the voltage on Auto if thats all that works but you should be able to change the voltages with out crashing lol Are you useing the newer 1.0D BIOS ? If not then try flashing up to that one and try again


http://www.ecs.com.tw/ECSWeb/Downloads/ProductsDetail_Download.aspx?DetailID=584&DetailName=BIOS&DetailDesc=C19-A%20SLI(V1.0A)&MenuID=35&LanID=9

BIOS page for ECS

 

[killerguppy]

Thanks,

Yeah the BIOS version is 1.0D.
I will try to see how far it overclocks w/ the CPU voltage on Auto when I get home this afternoon.

 

[JonathanDeane]

Thanks,

Yeah the BIOS version is 1.0D.
I will try to see how far it overclocks w/ the CPU voltage on Auto when I get home this afternoon.

Hmmm well if your all up to date on the BIOS you should be ok I got mine to boot at different voltages just fine but I leave it at the stock setting for my 3.6Ghz (I have the same CPU and Mobo)

 

[killerguppy]

It looks like I hit a wall @ 3.6 GHz. I guess that's what I get for purchasing a $70 motherboard. A 1 GHz OC isn't too shabby.

 

[JonathanDeane]

I would say not it could be your ram but I doubt it ? I have had mine higher just long enough to boot into windows check temps and shut down (I dont have an aftermarket cooler installed) was hot at idle @3.8Ghz on the stock cooler heheheh

 

[MrsD]

Not bad. However you could have purchased a real cpu for what you have into your cpu, cooling, water kit etc.
But if you did it just for kicks then hey, congrats. :lol:

 

[killerguppy]

I'm waiting on some of the new processors to come out to see some unbiased benchmarks...The upgrade from the Athlon XP 2800+ to the overclocked 805D was quite noticeable.

Thanks for the tips!

 

[LPS]

What PSU are you using? I had trouble OC this cpu past 3.3GHz until I went to a True Power 500Watt PSU.

Not using the same Motherboard, but now I can get 4GHz with an aftermarket AIR cooler.

Just a thought.

 

[killerguppy]

Sorry I didn't attach my sig w/ my system specs. Here you go.

Thanks!

 

[JonathanDeane]

I have to say I was surprised at how good that cheap ECS mobo is well I guess it helps when you dont expect alot (I payed like 70$ for mine) same ram, mobo, processor. I have a Radion X1300 and Antec Neo HE 550 is about the only difference lol

 

[Senator]

Not bad. However you could have purchased a real cpu for what you have into your cpu, cooling, water kit etc.
But if you did it just for kicks then hey, congrats. :lol:

a real cpu? are u serious? :roll:

 

[killerguppy]

I did some further testing today, and now I'm able to change the CPU voltage.
I dropped the memory down to 667 MHz with 4-3-3-8 timings.

I increased my mobo's FSB from 180 to 200 in 5 MHz increments every time running 2 instances of Prime95 for 10 minutes each test. I had to fiddle w/ the CPU voltage and was stable @ 3.95 GHz w/ a voltage of 1.475v.

I increased the voltage to 1.5v and I was able to boot into windows @ 4.0 GHz, but it would lock up after a few minutes running 2 instances of Prime95.

I lowered the FSB from 800 to 775 and booted into windows with no issues. I ran Prime95 several times while lowering the CPU voltage and it is now stable @ 1.45v.