this is my PC specification
MotherBoard: MSI 975X Platinum Power Up Edition
graphic card:GIGABYTE geforce9600gt
DDR2:4GB DDR2 Kingston
HD: western digital 500 GB Sata
Processor: Core 2 Duo E6600
my PSU is now 400 watt does it enough for this specification thnx
The 400W PSU should be enough but it would run at a higher load %.
If the PSU runs hot (check exhaust) you might want to think about a more watt model.
A 600W PSU is enough for a GF9800GX2 and a 3GHz quadcore.
I ran my Q6600 system on a noname 550W (LC-Power green power) PSU for six months without issues.
Corsair VX 550W is the sweetspot of value and quality right now.
If you want to save a bit get the VX 450W.
PcP&C is the best QUALITY PSU you can buy. You NEED 400W. Anything less would be ill advised. 500w's is more ideal. Crosair is also top quality.
There are 2 Things I never recommend skimping on. PSU's, and Motherboards, because they effect EVERYTHING in your set up.