That will depend on the motherboard, not the CPU. But most P4 boards support 4GB. That era motherboard rarely supported 8GB, but I can't say for sure on that point. For best results always buy the memory in matched pairs.
That will depend on the motherboard, not the CPU. But most P4 boards support 4GB. That era motherboard rarely supported 8GB, but I can't say for sure on that point. For best results always buy the memory in matched pairs.
2GB RAM should be enough for Pentium 4.
Download CPU-Z to determine the motherboard name and model and memory type(Mostly DDR or DDR2)
Or you can check in the BIOS as well.