PSU delima

[mountainbiker619]

Currently have a Enermax Noisetaker 420W powering a single 6800GT. I am about to purchase a second 6800GT and run a SLi configuration. My delima is, will the PSU above be sufficent or should I upgrade. I have limited ($450) money to spend and I am undecided between the two purchase options below:

1. ASUS 6800GT and 1Gig of Corsair 3200C2PT memory (will upgrade system to 2 Gigs) and a ENERMAX EG565AX-VEFMA2.0-SLI ATX12V 535W PSU (if needed).
2. ASUS 6800GT and a PC Power & Cooling 510 SLI-PFC PSU

 

[mountainbiker619]

Comp stats below.

 

[mountainbiker619]

Now I am considering scratching all the above and purchasing a ASUS 7800GTX, sell my 6800GT and use that money towards the memory upgrade.

 

[fishmahn]

It should run it just fine. Either option - 2x6800 or 1x7800.

If you have a lot of external devices or case lights it may be close to the PSU's limit but if you have a general system - 1-2 HDD, DVD/Burner, no lights, a few fans, etc., it should be fine.

Mike.