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Depends on your gpu and cpu. My numbers are high as I went with cpu+gpu being overclocked a bit and I always add 20% as the psu will lose a bit over time and so not running it at the limit means when it drops a bit it will still work for ages. Corsair CX TX whatever are good, so long as it's not the "builder series" it's good, if you add/upgrade your graphics card that psu won't be big enough.
Oh that's not mine, but a much neater build. Mines a mess. I have a corsair 430 or something. Cx? Non modular. I don't have a dvd drive either.