You can get the 7900gto for less than that. <edit> Just noticed you said the SLI (dual) jobbie, so I would expect it to be faster than the gto, though, I don't know by how much.
I think he means something like the Asus Dual, 2x GPU's & 2x 256MB on one PCB, like the old ATI Rage Fury Maxx.
Asus Dual, I think that was it. It has an external power supply as well. Edit: It's just gone up in price - it's now £209.72
Wow, £185 for one of those dual asus card's would've been an absolute steal!! Shame I didn't see this thread earlier As for the 512mb 7800gt, I'm pretty sure that Gainward were the only partner to release such a model, under their 'Goes Like Hell' monicker.
At the risk of waking up a dormant thread, does anyone know the maximum resolution for an XFX 7800GT 256mb? I have managed to divine that it's 2048*1536 but is that PER MONITOR or across two monitors? I have a pair of monitors running at 1280*1024 each at present, but would rather like to upgrade to a pair of 20" widescreens.