Results of P4 2.0 C1 Overclock

[LarryJoe]

Got this chip from Lukfilm's Dell pulls. Maxed out at 2.9ghz. I just can't run 3.0 stable no matter how much juice I give it. Stable is Prime95 torture test. Sure, I can boot into Windows at 3.2 with 1.8 volts, but not stable. Right now I am at 2900 with 1.55 volts. To even last an hour of P95, I need to run at almost 1.8 volts. Looks like 2.9 is the max for this particular chip within reasonable voltages.

I know these are a rarity, but anyone got one? Any experiences to share?

 

[EKAtBzboyz]

i havnt seen any other 2.0a C1 results but heres a 1.8a result

http://forum.oc-forums.com/vb/showthread.php?s=&threadid=137751

all i can say is :Q

 

[Imported]

OMG.. I want that 1.8. :Q

 

[Hamburgerpimp]

I don't know about these results. What Mobo will run the FSB that high. I've maxed out every P4 mobo I've had around 160-170 FSB. Anything higher is unheard of since the board only has a 1:1 ratio.

 

[EKAtBzboyz]

Originally posted by: Hamburgerpimp
I don't know about these results. What Mobo will run the FSB that high. I've maxed out every P4 mobo I've had around 160-170 FSB. Anything higher is unheard of since the board only has a 1:1 ratio.

hes using abit it7max and ive heard many success stories wtih that mobo

its got lots of ocing potential id say

 

[LarryJoe]

My fsb options exceed 200mhz.

 

[88CRXHybrid]

yeah but that doesnt mean that your mobo is stable at that fsb. Ihave an it7max and have personally taken my 1.6a to 190fsb stable(3040ghz). Before the IT7 I had 2 epox 4g4a+'s and neither of them would dream of going over 165fsb even with watercooling. Once I switched to the IT7 I was able to hit 165 with 1.7V instead of 1.85V. I recommend the IT7 to everyone. It is one of the very few mobo's(only one I can think of but there might be others) that has been repeatedly brought to 200fsb (provided the right CPU) and still have the ability to be stable.

 

[EKAtBzboyz]

Originally posted by: 88CRXHybrid
yeah but that doesnt mean that your mobo is stable at that fsb. Ihave an it7max and have personally taken my 1.6a to 190fsb stable(3040ghz). Before the IT7 I had 2 epox 4g4a+'s and neither of them would dream of going over 165fsb even with watercooling. Once I switched to the IT7 I was able to hit 165 with 1.7V instead of 1.85V. I recommend the IT7 to everyone. It is one of the very few mobo's(only one I can think of but there might be others) that has been repeatedly brought to 200fsb (provided the right CPU) and still have the ability to be stable.

exactly
imo it is by far the best consistent ocing board

 

[Duvie]

LarryJoe,

If you are truly doing 2900mhz stable at 1.55v and I mean not what is set in bios but waht is actual then I find it hard the chip wont do 3ghz with say 1.7v...in all my testing I could usually always get another 100mhz minimum when going from about 1.55v to 1.7v...If all of a sudden you hit a wall then I think it could be something else holding you back...So list everything you got!!!

1.7v is very reasonable....I have been on it for 5 months plus now without a hiccup...I did 1.6@2.53ghz with 1.51v and 1.6@2.74ghz with 1.71v...With lower multiplier that means more fsb boost to get that...You have a 20 and only need 5mhz of fsb...

 

[LarryJoe]

OK, first off, I am running an Abit TH7IIR, not the IT7 max. This is where I am at, I can run at 2910 with 1.62 actual volts stable. I can also run at 3.0, but need 1.77 actual volts to stay there stable. For 3.1, I need to juice it a little more. When over 1.75, temps easily soar to 63C under P95 Torture. As much as I really want to see 3.0ghz when I post, 1.77 volts and high temps are not worth it. There is enough evidence that +1.7 volts can kill a P4 quickly. Sure if this meant 2 years fine, but people are reporting dead P4's within 6 months. This is also an OEM chip, so if I kill it, there is no going back to intel.

It may be my mobo, but I wish I could see where. I have done the wire trick, I have a pci/agp lock, and I can increase the fsb at 1mgz intervals. Cooling with AVC Sunflower and AS3. RDRAM is well below 500 at 450 at 3.0ghz.

Any ideas?

 

[Duvie]

My opinion is that it is the mobo holding you back, with a possibility of heat but on the mobo side...Rdram mobos are well known not to oc as well "Stably".....

The fact is that in all my research and looking at thugs and supermanck's at that range you should still get 2fsb per each .025v....you need a whopping .15v more actual to get 5 fsb...I don't buy it!!!!! It is something else.....

What are you voltages looking like???

I can run 164fsb on my mobo at 1.63v and can still get 167fsb at 1.66v...169fsb at 1.68v...171fsb at 1.71v....172fsb at 1.73v....173fsb at 1.75v....

You can see how it starts to tail off a bit, but I still got 9 more fsb or 144mhz in less then yout talk about....


Maybe a GB DCDDR mobo here soon wil unlock its real potential and spank that rdram to boot!!!

 

[Toymaker]

As duvie and 88crxhybrid have already said it's most likely your motherboard. The 850 chipset does generally have a lower OC limit than the 845 although memory performance is quite good of course. That chip would probably go well over 3 GHZ on a BD7-II, P4B-533 or similar 845E,G,PE,etc. board.

 

[LarryJoe]

Yup, it most likely is the mobo, but I am not going to swap mobo's for 200mhz. As much as I would like to see 3.2 with reasonable voltage when I boot, the 850/RDRAM platform I am running is still the fastest available. So bragging rights aside, I bet my 2910 RDRAM beats a 3.2 DDR rig or comes damn close. In terms of stabiltiy, this rig has been rock solid after I select where to run it based on stability tests like Prime95. I'll check out things in 6 months and see if I should change mobo's or try the latest and greatest stepping.