What are the system requirements to play OFP: Resistance or the GOTY edition?

If you glance at the back of the case of OFP: Resistance's European edition, it says "Minimum system requirements are equivalent to the original Flashpoint Recommended specifications (note: recommended - not Minimum - specifications). That would be the following:

Windows 95/98/ME/2000/XP (and, of course, Windows XP, too)
DirectX 8
Pentium III 600 CPU or better
128MB RAM
16 Bit DirectX Sound Compliant Sound Card
Compatible 3D graphics card with 32MB RAM
24x CDROM
450MB hard drive space

However, the European GOTY edition's box explicitly lists the following as minimum requirements:

Windows 98/ME/2000/XP
DirectX 8.1
Pentium III 500 CPU or equivalent Athlon
128MB RAM
16 Bit DirectX 8.1 Sound Compliant Sound Card
Compatible 3D graphics card with 16MB RAM
8x CDROM
550MB hard drive space
250MB free hard drive space after installation

Ron Milbrandt, Codemasters USA Lead Technician, summarized the changes in minimum requirements introduced by OFP: Resistance and GOTY as follows:

DirectX 8.1 versus version 8.0 specified for the original OFP version.
CPU minimum was increased from 400 MHz to 500MHz and not to 600MHz, as implied by the European version.
All references to the Voodoo 2 card are dropped.
Hard drive space required is increased from 450MB to 550MB.
Windows 95 is dropped from the supported Windows version list.

OFP: Resistance and the GOTY edition have slightly upped the recommended system requirements as follows:

Windows 98/ME/2000/XP
DirectX 8.1
Pentium III 733 CPU, equivalent Athlon or better
256MB RAM
16 Bit DirectX 8.1 Sound Compliant Sound Card
Compatible 3D graphics card with 32MB RAM
24x CDROM
1GB Hard drive space
500MB free hard drive space after installation

(Source: BIS' OFP: Resistance site and the GOTY edition's box cover)

I personally recommend a 1GHz or stronger CPU and adding an additional 128 or 256 MB of RAM. If you don't, you'll have to set OFP: Resistance's and the GOTY edition's graphics preference and option settings lower to maintain reasonable play performance. You'll also be hard pressed with any graphics adapter that has less than 16MB of video memory.