It really depends on the budget you're willing to spend on the PSU. Without a GPU, those two components will not even reach 150W power draw (or not even 200W~250W if you add up your other components such as SSDs, HDDs, and fans, but depends on the quantity).
Technically, you can get by with any good quality ~300W PSU. Such as this:
Antec EarthWatts Green 380W 80+ Bronze Certified ATX Power Supply ($41.99 @ SuperBiiz)
The EA-380D Green is made by Delta Electronics, has a rated 50C oper. temp., provides combined total of 336W at the +12V rail, only has 1x 6-pin PCIE power connector, non-modular cables, and 3-year warranty.
However, if you do plan to get a GPU in the future, that ~300W PSU probably won't cut it, esp. if you'll...