Antec ISK 310-150+i3 2100/2120+Sapphire single slot low profile 6670 1GB...doable?

[Marine-RX179]

I've always thought about building a tiny mini-itx PC that's capable of gaming up to reasonable level, and has recently discovered that Sapphire gonna launch a single slot low profile 6670 1GB.

My only concern is...would the 150W PSU with 10A on the 12v rail (so 120W if I'm not mistaken) handle it?

An i3 2100/2120 has a TDP of 65W, and a standard 6670 1GB would pull around 58W max according to TechPowerUp. That is probably cutting it a bit close...but considering the Sapphire low-profile 6670 1GB should have a lower power consumption due to the small PCB....what do you guys think? Also, what rail does motherboard runs on?

 

[mcwildcard]

I have a 95w i5 running with a LP 6570 and the peak draw is about 130w.
I've not stress tested the system, but the 6670 draws about 30w more than a 6570, so I'd say 150w should be just enough juice. Might be a little tight under a full stress test though.