Now the thing is I'm lacking the dual 6 pin thingy on my power supply... so obviously I'll have to buy a new power supply but I'm not sure what's important and it shouldn't be too expensive (should be less than 100€).
I need a power supply with 400-500 watts (must be AT VERY LEAST 400 watts) that provides my hardware with power. My computer has the following stuff in it:
- AMD Phenom II Quad 955 4x3200 Mhz
- ASUS M4N68T-M LE mainboard
- 8gb of ram (2 x 4096mb)
- 1000gb s-ata hard drive
- 22x LG Dual Layer DVD +/- R/RW DVD burner
- zotac geforce 550 gtx ti amp! edition (my current graphics card is the radeon hd 5450)
My current power supply is: 420W LC power 420H silent deluce atx power supply
It has 420 watts but is lacking plugs as I already mentioned above.
Yup that power supply should have all you need and more. I don't know if it has the connectors for two graphics cards, but it sounds like you're only putting a single graphics card in the computer so you're fine