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Celeron D vs "old" celeron. Comparable speeds?

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I have an old Asus P4P800S SE board with a 2.4 GHz Celeron in it. Pondering replacing this with a similar speed Celeron D, after flashing the BIOS, and doubl.ing the RAM from 512MB to 1 GB.

Can't seem to find much on the web comparing relative speeds of these two processors and wondered if anyone can give me a rough idea of the sort of speed gains I might see, to work out if it's acutally going to be worthwhile? Don't plan to overclock and the machine will mostly be used for photo editing.
 
According to Intel, the Celeron Ds are Socket 478. Asus also states compatibility is OK after a BIOS update.
 
well, the ones on the OCuk site are all LGA775. I have one of them as a spare just in case my E6300 fails for any reason, and its definitely a 775.
 
You're right, but having checked again on the Intel site; they are available as both LGA775 and Socket 478. If I go ahead with the upgrade I'll have to make sure I get the right one! Thanks for the heads-up.
 
Socket 478 chips will be hard to get hold of now, you may have to try an auction.
 
celerons were based on northwoods architecture, does that make them like the northwood pentium, slightly faster clock for clock than its prescott brother?
 
I have two celerons here:

2.4 celly d (presscott)
2.4 celly northwood

The celly d is defo faster than the northwood version, but imho like others have said is to get the fastest p4 you can aquire and not to pay over the odd's for it.
A certain auction site has plenty.. BUT the prices are a tad silly tbh
 
Gashman said:
celerons were based on northwoods architecture, does that make them like the northwood pentium, slightly faster clock for clock than its prescott brother?
Click to expand...

don't quote me, not sure i remember right but Northwood desktop Celerons had 128K L2 cache and the mobile versions had 256k L2, the Celeron D based on prescott has the same latencies and 31 Pipeline Stages as the full fledged prescott, never bothered to compare them though as i never bothered with PIV Celerons.
 
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