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Official C1 P4 stepping tracker.....

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the point seems kinda mute since we're all waiting for GB boards to hit the street. memory BW and low latency, bring it on!
 
Originally posted by: THUGSROOK
Originally posted by: Duvie
I am still perplexed by the issue why voltage increases buy you nothing!!
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motherboard limitations?
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That is what I was hinting at!!! One guy I noticed is able to do much more fsb with his 1.6a then he can with his c1 so the mobo didn't limit him there...that is why I started to think about the power and the 3 phase mobos....

 
a lot of these guys are using i845pe chipsets.

im my case im sure im board limited...
2 chips cr@pped out @ 167fsb and still had more voltage 😉
 
It's funny, my Asus P4B266 would do 173 FSB all day long without so much as a peep. Thugs, have tried the P4PE?


Self
 
yea i know all about that...

ive had a p4b266-C (i845D) running @ 179fsb and a p4b533 (i845E) @ 183fsb.

im not at all interested in a p4pe since reliable ppl have already noticed a 167fsb limitation on that board too.
 
Originally posted by: tstrike
167 limitation?
what PE mobo can go higher?
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My thoughts/question exactly. I have a 2.4 here that wants to do ~172 FSB and my Albatron PEV Pro is giving me grief starting at 162 FSB. I may have to go back to my P4B266 😀



Self
 
One confirmed C1 stepping (12/12 - ordered 12/6) in the 2.4B reader feedback at newegg (packing date 11/8).
Three confirmed B0 steppings (12/10, 12/12, 12/13) in the 2.53 reader feedback at newegg (dissapointed that they didn't get C1s).

In other words, newegg is still a crapshoot for P4 2.53 and below C1s.
 
I just found this thread and thought i would share my results. I've had a C1 1.8a installed in an Epox 4G4A+ for about 1 1/2 days now and this cpu hits a brick wall at 150 fsb. I've had 2 different P4 1.6a's in this board and both do over 160 fsb easy(1.57v), this C1 only does 142 fsb at default voltage. Raising voltage does not help this cpu much, .15v increase only yields 8 fsb (150) and a ton of heat. I've reinstalled the heatsink twice using ASII thinking that was the problem, but i get the same result. What is really strange is i can run Prime95 at 142 default voltage with zero problems but bump up the fsb 1 or 2 and Prime95 gives rounding errors almost instantly. I think with these lower clocked C1's, you either get a smoker or a dud nothing in the middle.
My little brother has a 2.0 C1 and he can do 3ghz default voltage but can't get any higher. Maybe a motherboard bios update for these older 845 chipsets to handle the newer chips would help, just a thought.
 
about those older 845 boards.

I've been grappling with an issue i've encountered with my old Asus P4B266C board (rev1.00) with the latest bios installed (1005). I've installed various C1 CPUS (1.8A, 2.4B, and a new 2.66B) on this mobo and could not get these chips to run properly at all. this combo can't run a loop of 3dmark or run a DVD without hanging after a minute. at first i thought my 1.8A and 2.4B had started to succumb to SNDS so i tested them back on my P4PE and they've all run fine. i re-installed a 1.8A B0 CPU that easily did 2.4 on the ole P4B266C and now it runs fine.

it looks like this early motherboard version does not like the new C stepping CPUs.
 
Garster ~ thats the nature of higher multipliers and why wed rather have a 16x or 17x 😉

18x and higher tend to cr@p out very quickly and you wont get much fsb for your added voltage.
 
Well i've put my 1.6a back in, my system feels faster with it. I purchased a board from Evan here at Anands, should be here early next week. It's an Albatron board and i'll give it a try with that board. Thug's your right about the high multiplier, but also a 40% overclock is really all not that bad is it ?. I have about $ 105.00 in the cpu so i'll get my moneys worth out of it.
On a side note, late last week there was an Ebayer selling a lot of 10 2.8 P4's new retail box for $250.00 shipped each, i glanced at it and thought about it but they were gone in an hour.
 
Well, Duvie told me to post it here..so here goes

I have a 1.8A C1 stepping overclocked to 3.45GHz @ 1.7vCore in Bios, and between 1.61-1.69 vCore in reality.
I got my 1.8A a month ago, before I realized it was a C1. I purchased it at MemoryMedia
I purchased the retail box...not expecting a C1. I don't think MemoryMedia even knows if they have C1 1.8A or not. Must have stumbled on some kind of luck.

Anyways, I am using a Swiftech MCX 4000 with a Thermal Take Smart Fan 2
My mobo is a ABIT SR7-8X and currently I am using the 1:1 memory ratio.
 
Originally posted by: LCD
Well, Duvie told me to post it here..so here goes

I have a 1.8A C1 stepping overclocked to 3.45GHz @ 1.7vCore in Bios, and between 1.61-1.69 vCore in reality.
I got my 1.8A a month ago, before I realized it was a C1. I purchased it at MemoryMedia
I purchased the retail box...not expecting a C1. I don't think MemoryMedia even knows if they have C1 1.8A or not. Must have stumbled on some kind of luck.

Anyways, I am using a Swiftech MCX 4000 with a Thermal Take Smart Fan 2
My mobo is a ABIT SR7-8X and currently I am using the 1:1 memory ratio.
Click to expand...



That is a sis648 mobo, right??? Wow!!! A sis chipset staying stable past 150-160fsb is rare and you got 192....How did you pull that one off???
 
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