It should perform similarly to the P4 3.4. It's based on Conroe and much more efficient. It's certainly fast enough for Far Cry and Doom3, but it might still be too fast for the older games.

You could look for a Pentium4-based "Celeron D" instead if you want to go slower. These CPUs should be very low price.

The CPU lists on Wikipedia are useful:
https://en.wikipedia.org/wiki/List_of_Intel_C … eron_processors

What motherboard are you running, and what CPUs (especially Conroes or newer) does it support?

VivienM wrote on 2024-05-15, 19:33:

What motherboard are you running, and what CPUs (especially Conroes or newer) does it support?

Gigabyte GA-8I865GME-775, Celerons are on the list of supported CPUs

Use the 3.4GHz P4 for XP Games and run the 90s DOS stuff in DOSBOX-X on that machine...

Any LGA775 is going to be insanely fast for most 90s games. I run DOSBOX-X on a 2.66GHz P4 and it runs fine.

kingcake wrote on 2024-05-15, 21:35:

Use the 3.4GHz P4 for XP Games and run the 90s DOS stuff in DOSBOX-X on that machine...

Any LGA775 is going to be insanely fast for most 90s games. I run DOSBOX-X on a 2.66GHz P4 and it runs fine.

I was actually speaking about cpu speed sensitive Windows games. Anyway, 1.6 Ghz Celeron 420 is ok for DOSBOX?

Keeper95 wrote on 2024-05-15, 22:38:

kingcake wrote on 2024-05-15, 21:35:

Use the 3.4GHz P4 for XP Games and run the 90s DOS stuff in DOSBOX-X on that machine...

Any LGA775 is going to be insanely fast for most 90s games. I run DOSBOX-X on a 2.66GHz P4 and it runs fine.

I was actually speaking about cpu speed sensitive Windows games. Anyway, 1.6 Ghz Celeron 420 is ok for DOSBOX?

Without a doubt.

Keeper95 wrote on 2024-05-15, 19:52:

VivienM wrote on 2024-05-15, 19:33:

What motherboard are you running, and what CPUs (especially Conroes or newer) does it support?

Gigabyte GA-8I865GME-775, Celerons are on the list of supported CPUs

A rev 2 or newer, I hope? (it seems there are at least 4 revisions of this board, 1.x is HotBurst-only)

What I was going to suggest is that you look at the 800MHz FSB Pentium Dual Cores if supported. You keep the 800MHz FSB which is ideal for 865 boards but you can get quite a bit more single-core MHz than on the single-core Celerons...

P4 versus Celeron 420 comparisons: Re: Pentium 4 - Silly overkill machine

Check out the Celeron D 320. It's an lga 775 2.4ghz/256kb/533fsb netburst chip, if your motherboard supports it and you want as slow of a CPU as possible.

ODwilly wrote on 2024-05-16, 03:54:

Check out the Celeron D 320. It's an lga 775 2.4ghz/256kb/533fsb netburst chip, if your motherboard supports it and you want as slow of a CPU as possible.

This Celeron D 320 is slower than 420? Games reacting to CPU clock speed, isn't it? So that's why I'm interested in lower clocked 1.6 Ghz Celeron. And seems like this Celeron D 320 is 73W. Anyway, thank you for recommendation.

320 is ancient hot and bad NetBurst abomination. 420 is Conroe, 4 years younger Core family Re: Pentium 4 - Silly overkill machine

I would go for the Celeron 420, no reason to get Netburst if you board supports a Core cpu.

Need for Speed Porsche is one game that will use low resolution textures if the cpu is faster than about 2ghz.

But if the board supports a 800mhz FSB dual core Pentium (E21xx series) or Core2 (E4xxx series) I would get that because performance per clock would be higher due to larger cache.