best way to improve performance.

[Byzantine Prince]

I got 1.2 Pentium and 512 Ram, and also Radion 7500. What do i upgrade first?

[Red Harvest]

I got 1.2 Pentium and 512 Ram, and also Radion 7500. What do i upgrade first?

That's a fairly dated system. That is a P3 1.2 GHz I assume? That would be the top of the P3 line, meaning there is no upgrade path for the processor. If it is a P3 it probably runs 133 MHz SDRAM. So while you could add more RAM, you should realize that it is 3 generations old now (266 DDR, 333 DDR, and now 400 DDR.) Again, with a P3 there is no upgrade path for memory bus speed.

You could try something like a 9600 to max out that old system, but you are going to find the FSB and CPU speeds are the limitation in many situations. I've got an old 133 MHz SDRAM/ Athlon XP2100+ /with 8500 that did good service, but it is at the end of its upgrade path and I've not even tried RTW on it.