I can't answer about the loudness as I haven't got one but the power supply should be fine as long as you haven't got a lot of other things using the power as well. It is an old design though and so you might want to look at a more up to date version. Anyway here are the specs for it:
Wattage 875 Watts
- Fan 140mm Fan
1900RPM ± 10%
- Efficiency up to 89%
- Compliance with Intel ATX 12V 2.3 & SSI EPS 12V 2.91 standards.
80 PLUS Bronze certified - provide up to 88% effective power conversion to cut- down electric cost.
24/7 @ 50 °C: Guaranteed to deliver 875W continuous output power.
Double-forward switching circuitry: compared with traditional circuitry, double- forward switching circuitry offers low power loss and high reliability.
Unparalleled DC to DC converters for 3.3V and 5V outputs to reach high efficiency.
S.P.T. indicator: PSU status monitor with 3-mode LED (standby / PG signal / temperature).
12Vin1: single +12V rail design providing up to 72A.
High quality Japanese capacitors: ensure superb performance and reliability.
Solid state capacitors: great stability at higher operating temperatures, frequencies and currents.
Fan Delay Cool Technology: allow fan to continue to operate after system shuts-down to ensure all components are properly cooled.
Multi-GPU ready: support up to two PCI-E 6+2pin & two PCI-E 6pin for PCI-Express graphic cards.
Auto switching circuitry for universal AC input from 90-264V.
Active Power Factor Correction (PFC) with PF value of 0.95 at full load.
High reliability: MTBF>120,000 hours.
DIMENSION: 5.9"(W) x 3.4"(H) x 6.3" (L); 150mm(W) x 86mm(H) x 160mm(L).
Built in industrial-grade protections: Over Current, Over Power, Over Voltage, Under Voltage, and Short-Circuit protections.
I have heard that the cards are fairly quiet compared to a lot of cards but that is all I can say about it I'm afraid.
