A pico power supply. I'm unsure, but I think I'd want 150 watts to be safe. Cheapest I found this was $95. Premium picoPSU-150-XT/12.5A 150W AC-DC $83
(this is the exact model i bought)
But I'd then have space to fit a monster vertical 120mm heat sink and ultra quiet fan in the case.
If you go with an intel mobo + Mugen 3
, it will allow to spin down the slipstream to 250-300rpm (in bios), to me inaudible. My HTPC has one running and even though its i3 2120 even at load it doesnt exceed 60C. Another option is Thermalright HR02 Macho
, much more massive, and probably better cooler for low rpm fan, but TY140 will not spin that low, 700rpm is the least i was able to, but you can always get another low rpm like a Scythe Slipstream PWM 120mm Case Fan SY1225SL12LM-P
I have no issues with 150XT powering my i3 2100T (six months 24/7 and no issues), mine even at load consumes 50W, a G530 should consume less, not sure how much would your tuner card will consume or the additional hdds you will add, but i think 150XT should be more than enough. Personally i would recommend to check Q11, similar but slightly bigger than Q07, and use the single 140mm case fan, swap the frontal fan or undervolt it, probably 300rpm would be enough for a big tower cooler on it.
Q11 10.24" x 7.87" x 12.40"
Q07 8.19" x 7.60" x 11.02"
Here is a couple of pics to see the difference in size between the Q11 and Q07, pic1
The tuner card will limit the orientation of a tower cooler (check my minimi build on my sig), the HR02 is asimetrical (it starts almost flush on cpu socket and grows to the back) so if you mount it like i did, it will still allow you to use the PCI slot (i think, i dont have 16x slot to know for sure, the macho has a new mounting bracket), but my guess is you cant use a fan with it, thus recommending again the Q11, out of the fan will cool draw cool air inside the case, because of the postive preasure it will also draw away warm air outside, and it will also cool the CPU due to proximity of the CPU socket to the frontal case fan. Here is a pic of the HR02 + Lian Li Q11,