looking for a C1 CPU

[SkaGoatMaster]

Are they any 2.8 C1s or 2.53 C1s? how good of a overclock can I expect? how do I identify a C1 from a non C1 from it's packaging?

[batboy]

The best way to tell is to look up the S-spec code at the official Intel website. However, the easiest why is to just look at the default vcore voltage.

B0=1.5v and C1=1.525v

[laja]

All 2.66 and 2.8 Ghz P4s are certainly C1 processors. I'm not sure about the 2.53 Ghz pieces...

As to the overclocking, C1s generally run stable at 3.2-3.4 Ghz on air.

[burtonsnow]

there aren't 2.53's that are c1's, only the 2.5's.

[batboy]

I think the C1 stepping is finally trickling down into the 2.53, 2.4, 2.26, 2.0a and 1.8a, but you have to be careful, because most of them will still be B0 stepping. The only C1 1.8a CPUs I've heard about so far are OEM units sold to Dell etc. Eventually, all the Northwoods will be C1 steppings, but Intel will try to sell the old CPU stockpiles first. However, if you get a 2.5, 2.6, 2.66, 2.8, or 3.06 then you are guaranteed to get a C1 stepping, since they didn't make those in B0 stepping.

[caboob]

There are C1 2.53Bs, I just happened to get mine (an OEM) from an ebay trader that confirmed it for me.

[Dissolved]

Does anyone know where i can get a c1 stepping 533fsb Chip under 200 shipped? im thinking of getting the 2.4B from newegg. anyone with advice?
thanks

[thirteen13rulez]

you can get a c1 2.4b at pcnut.com for $225
thats what im getting

[Dissolved]

Originally posted by thirteen13rulez
you can get a c1 2.4b at pcnut.com for $225
thats what im getting

Interesting..

Newegg has the 2.4B for 193shipped. But that doesnt confirm if its a b0 or a c1.. 225 over 193 is alot..

[batboy]

Depends on whether you want a guaranteed C1 or not. Newegg.com will be the luck of the draw.

[lightbulb8817]

Originally posted by Dissolved


Interesting..

Newegg has the 2.4B for 193shipped. But that doesnt confirm if its a b0 or a c1.. 225 over 193 is alot..



I just got a 2.4B from Newegg. The package date on it is 11/5/02. I got a B0 stepping (SL6EU):(

[jgtdragon]

I know a guy from Ebay that sells the P4 2.53 C1. He wants $206 shipped. But I am thinking of passing on it since I think I found an 1.8a C1. :D

[burtonsnow]

are there any more where you found that one?

[Tedinde]

You can buy a guaranteed 2.4 c1 from ATACOM.com for $10 more than a regular. They are cheap there anyway and never a problem i have had from them $210


http://www.atacom.com/program/atacom_new.cgi?cart_id=3159790_68_82_239_55&USER_ID=www&PAGE=IP47_CPUX&ADV=CPU