The 650 W FSP Dagger Pro cannot compare to the SFX competition because its performance is not on par with the EVGA 650 GM, which is also based on an FSP platform and costs the same as the Dagger. As such, you should only buy the Dagger if you need two EPS connectors since the EVGA 650 GM only has one.

The SDA2-650 is fully modular and achieves a high power density score because of its compact dimensions. Currently, the highest-capacity SFX unit is Corsair's SF750, but still, 650 W out of such a small platform is an impressive feat. However, what matters the most is keeping performance high in all areas, and not compromising anywhere.

The SDA2-650 comes with a 92 mm double ball-bearing fan. In terms of dimensions, this is the largest fan an SFX unit can take. The previous Dagger with a capacity of 600 W couldn't keep up with the competition mostly because of a ripple problem on its 3.3V rail, so I am eager to see whether this new model can face off against the competition, which includes the EVGA SuperNOVA 650 GM also made by FSP but based on a different platform.