Re: Pentium vs Celeron

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From: Tim Slattery (Slattery_T_at_bls.gov)
Date: 05/11/04 

Date: Tue, 11 May 2004 12:33:32 -0400

"Yves Leclerc" <yleclercNOSPAM@maysys.com> wrote:

>Celerons are Pentiums where the Floating number processor (FPU) has be
>"deactivated".

Not true!! Intel hasn't used that trick since they made the 486/487
CPUs. The only difference between Celerons and regular Pentiums
(AFAIK) is in the size of the L1 cache. This is a (relatively) small
amount of very high-speed RAM on the CPU chip. The CPU can read from
and write to this memory *very* fast, and there is circuitry on the
chip to analyze RAM usage, predict which parts of RAM are likely to be
used soon and load those into the cache (after saving updated parts,
of course). Having a smaller L1 cache means that the Celerons are a
bit slower then full-fledged Pentiums. But the instruction set, and
everything else about the CPU is identical (including the floating
point unit!), so the answer to OP's question about developing programs
on Celerons is NO PROBLEM. Anything that runs on a Celeron will run on
a Pentium, and vice-versa. 

-- 
Tim Slattery
MS MVP(DTS)
Slattery_T@bls.gov

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