Also I might be looking at doing some light (but modern) gaming, in which case the Radeon 7750 seems the best (single-slot) power/performance choice - but it can pull ~45W going full-tilt... Would 160W cover that? Or even a 120?
It's been a long time since I built a PC, so I'm struggling to work out the start-up load & the various rails.
Is there any real advantage with going for an i3-2120 over the 2100?
I have this picoPSU in a ITX case but only one SSD and it pulls may be 60W max. Each HDD should be 10W max each. I would go with a wide voltage version, the red one (vs yellow). Wide voltage let you use some notebook PC adapters. There are a lot of 90W to 120W choices.
Thanks a lot.
Do you think I'd be able to get away with an i5-3570k? Not overclocked, but the upgrade to HD4000 graphics seems pretty significant, and I would really like to play some games...
That's a 77W TDP CPU. It should be ok for 120W PSU. If you are concerned, use a regular ATX PSU and play a game on the setup. Use a Kill-a-watt to judge whether it is below 120W. Remember to take ~80% of the meter reading, to remove the rough PSU waste. Our 1st gen i7 + GTX560 Ti gaming machine runs at ~240W all in.