With its 750 W ceiling, the Sutai Double Power P4-750W is basically a big brother to the P4-500W. While it has one more SATA connector (two total), it has one less Molex connector. Aside from that, the two power supplies are almost like peas in a pod.
The Sutai Double Power P4-750W did not even last as long as the 500 W model. Alarmed by the weaknesses of the 500 W unit, we began our tests at very low loads. Again, the results suggest a PSU originally designed for a maximum load of 300 W. Looking at the test results at low loads, this becomes rather evident.
It reaches an efficiency of 82% at loads as low as 85 W, a value that more expensive and powerful models would be happy with at this low level. But expecting the $25 Sutai Double Power P4-750W to continue delivering efficiency values like that might be a tad optimistic, even at 300 and 400 W, which is output that should be easy for a 750 W PSU. We were not extremely surprised when the PSU suddenly died of a heat stroke at a load of just 350 W, making further testing impossible.
Compared to the 500 W model, the Sutai Double Power P4-750W is an even bigger shame. While its little brother shut down at low loads, at least it'd fire back up after resting a bit. The 750 W unit overheated after just a short period of testing, and was completely dead after that.



Great article!
XION isn't as bad as these obviously, Ive run 4890s crossfired with a mild overclock on my 955. But the XION brand still makes me nervous.
I use an Enermax Modu87+ 700W unit, it's a highly rated Gold certified PSU. Upon release it was the most efficient PSU Anandtech had reviewed to date, and in conclusion it was one of the best PSU's they ever tested. While there are more efficient PSU's on the market now (80+ Platinum, and a few newer 80+ Gold's) I still consider the Modu87+ lineup top contenders in the high-end PSU market.
Highly recommended.
I thought with a name like Antec, I would be safe. So not true.
Now I only buy SeaSonic. I have not had a problem since. I understand they are expensive however, so is my data. I have had too many bad experiences from cheap power supplies. Anything under $100 I think is a waste of money.
anyway, interesting article and will definitely have to sticky this to the forums for people new to computer building