The A8N-SLI is rather picky about what powersupply is used with it, and that’s partly due to the fact it is designed as an ATX 12V v2.0 motherboard, featuring a 24-pin power connector and dual 12-volt rails coming from the powersupply. Although this recommendation goes for all systems, the A8N-SLI demands you have a good powersupply, the minimum requirement is 400-watts. It doesn’t have to be an ATX 12V v2.0 powersupply per se, nor feature a 24-pin plug, but it needs to be able to supply at least 18-amps of current or 200-watts on the 12-volt rail. Of course there’s a difference between running a single PCIe video card with this motherboard and running two in SLI. Up until two GeForce 6600GTs you can get by with the following power supplies:
Power supplies tested with a single GeForce 6x00/GT/Ultra or up to 6600GT SLI
- Zalman ZM400B-APS, 400-watts
- Antec TruePower 430, 430-watts
- Tagan TG480-U01, 480-watts
- Enermax Coolergiant EG435AX, 430-watts
- Antec NeoPower 480, 480-watts
- PC Power & Cooling Turbo-Cool 510 SLI, 510-watts
Power supplies tested with GeForce 6800GT and 6800 Ultra in SLI
- Tagan TG480-U01
- Antec NeoPower 480
- Fortron Source FSP550-60PLN*
- Antec TruePower 550 EPS12V*
- PC Power & Cooling Turbo-Cool 510 SLI**
**The PC Power & Cooling Turbo-Cool 510 SLI is currently the best PSU for running an SLI configuration or a high-end PC and comes with dual 6-pin PCIe connectors.
The power supplies designated with a * are needed if you want to run the A8N-SLI with an Athlon 64 FX 53 or 55 processor, two GeForce 6800 Ultras and two or more high capacity Serial-Ata drives. However they need to be modified in order to convert the 8-pin 12-volt connector, coming off of the 2nd 12-volt rail to two 6-pin PCIe power connectors, this is a simple procedure that means extracting the pins from the original connector and splitting them out to two 6-pin PCIe connectors. These will be connected to the GeForce 6800 Ultras directly, hence powering them off of their own 12-volt rail within the power supply. From our testing this is the only way to guarantee absolute stability. Take notice that when running SLI the EZ-Plug must also be connected to guarantee stable operation.