Upgrading help - old sli or new single card?

[alexisonfire]

Looking to upgrade my graphics card within the next few months, but don't have a lot to spend. I've scaled it down to two options, which are..

Go sli with the card i've already got or upgrade to a 7800 and sell my current card.

So

2 X ocUK Inno GeForce 6800 GT 256MB DDR3 TV-Out/Dual DVI (PCI-Express)

OR

1 X OcUK GeForce 7800GT 256MB GDDR3 TV-Out/Dual DVI (PCI-Express)

Advantages and disadvantages please

 

[Raikiri]

the 6800GTs will be a bit faster, but then theres no upgrade path from there and then theres all the annoyances SLi brings. Like cooling problems, drivers and general bugs. Plus a single 7800GT would probably be a little cheaper

 

[Arcane]

Go for the 7800. Less noise, heat and power, plus it'll perform roughly the same as 2 6800gt's.

 

[The ToAsT]

Go for the 2 x 6800GTs. I did, and I'm very pleased. 4456 3DMark 06, and no problems to report.

 

[alexisonfire]

Hmmmm, lets pretend the two 6800's and the 1 7800 give the exact same power output...apart from cooling issues with sli, would there be any advantages having two cards over 1?

 

[Arcane]

No. None that I can think of. I came from a 6800gt SLI setup to my present one and I'd recommend the 7 over the 6 series.

 

[alexisonfire]

There must be some things sli can process faster than one graphics card, no? Someone must know the details

 

[juno_first]

3dmk05:
1x7800gtx = 8400
2x7800gtx = 13400
But I not notice games going much faster with 2 cards & you can not have multi monitor with SLI enabled.

 

[Raikiri]

There must be some things sli can process faster than one graphics card, no? Someone must know the details

Well, my 780GT gets just over 4k in 3dmark06, as you saw the sli 6800GT get 4600ish.

Like i said they will be a little faster but not wortht he trouble imo (maybe needing a ne wPSU, more heat so possible new coolers, more noise and so on).