thanks for all your help
i might still get a 500w as i can fell that sometimes the PSU gets a bit warm
sorry for not replying sooner
i stoped geting email notifications :/
ok i have a 400w PSU
i currently run
Intel Pentium D920 OC'ed @ 3.0Ghz
2Gb DDR2 667Mhz RAM
500Gb SATA HDD
ATi HD 2600 Pro OC'ed
2 X High Perf. LED Fans 12Cm
DVD-RW and DVD-ROM
the temps are ok at the moment
another 500Gb SATA HDD and
1 X 12cm LED fan
1 X 8Cm LED fan
or would i need a...