PSU enough power? worth upgrading?

scooby_r

Distinguished
Apr 1, 2009
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18,510
Hi guys, this is my current build since last year. Thought of getting some new parts but i need to know whether the PSU is capable of supporting these upgraded hardwares

Processor
Intel Core 2 Quad 9400 @ 2.4Ghz

Mainboard
Asus P5Q-SE/R

Graphics Card
Asus Nvidia GeForce 9800gtx+ 512MB

Memory
2 x (2GB OCZ Reaper DDR2 PC 6400/800mhz)

Display
Samsung Syncmaster 943Nx 19"

Storage
WD Caviar Green 16mb 500GB SATA(OS) plan to get another WD Caviar Black (32mb) 1TB SATA for additional storage

Optical Storage
none - plan to upgrade to LG 22X DVDRW LightScribe

Casing
Lian Li PC-7FW

PSU
Silverstone Zeus 750W Continuous

Audio
plan to get a Create X-Fi Titanium SoundCard

OS
Vista Home Premium 64 bit SP1

Please advice me as whether i should get those upgrades and whether the PSU is enough to support these upgrades. Looking forward to hear from you all