1. Special cable management system.
2. Complies with Intel ATX/BTX standard.
3. Four PCI express connectors.
4. Six SATA connectors.
5. One bottom blue led fan (140 x 140 mm).
6. Supports EPS & Intel 945/955/975x chipset.
7. ATX 12V Ver.2.91
8. AC Input 115 & 230V.
9. Output gold-coated connectors
10. Output over / under voltage protection.
11. Output short protection.
12. Over load protection.
14. Quad 12V rails.
15. Nvidia SLI certified.
16. Aircraft style modular connectors.
17. Built in auto fan-speed sensor.
Maximum power: 800 Watts.
Frequency range: 47 ~ 63Hz.
Input waveform: Sine wave, modified sine wave or square wave.
Input maximum current: 10.7A @ 115V, 6.2A @ 230V
Withstand voltage: Input to output 1800Vac 3 sec. Input to ground 1800Vac 3 sec.
Efficiency: 70% minimum at full-load, 75% minimum at typical load.
Overpower protection: 105%~150%
Over voltage protection: +5V output is between 5.7V to 6.5V.
+12V output is between 13.2V to 14.4V.
+3.3V output is between 3.7V to 4.1V.
Under voltage protection: +5V output is between 3.3V to 3.7V.
+12V output is between 8.5V to 9.5V.
+3.3V output is between 2.0V to 2.4V.
Unit dimension: 6 3/8"(161 mm) L x 5 7/8"(150 mm) W x 3 3/8"(85 mm) H Unit weight: 6 lbs.
MTBF: 100,000 hours under the following conditions full-rated load, 120Vac input, and 25C ambient.
Switches: ATX Logic power rocker switch.
The Mach 1 has four rails, with 18A, 18A, 20A and 22A respectively. There are 900 and 950 watt PSUs with similar specs, and 750 watt PSUs with better specs, so I would say that the amp ratings are average, or maybe a little above.
Note that the Mach 1 is SLI certified. If you go to the nVidia site, you will see that there are five tiers of SLI certification for power supplies. The Kingwin 800w is in the third tier, which is certification for SLI rigs up to twin 8800GTS. The top tier is for twin 8800 Ultras, and consists only of 1kW PSUs and above. The second tier is for twin 8800GTXs, in that list is a small handful of 800 watt or less PSUs. Each one of them costs significantly more than the Mach 1. Actually, most of the 800w or less PSUs in the third tier cost more than the Mach 1. So, I guess that nVidia finds some “bang for the buck” value in the Kingwin Mach 1. I'm a “bang for the buck” kind of guy, so that's cool with me.