GTX460 768MB = $199/£160
GTX460 1GB = $229/£190
The above £ prices are from the store here, the $ are from Newegg. You can find both for £150 and £180 though at another retailer.
The £199 GTX460 1GB Palit card sold here is 800mhz, that's at or even above the performance of the 5850 and it's £43 cheaper than the cheapest 5850 in stock.
Have to say, thats far better than I expected, but keep two things in mind, the 5850 were £200 at launch, the rrp is £200, and I got a stock one for £200, and a asus cu one months later for £215, theres never been a time I couldn't find one for £215 in the uk since launch.
As for the speed, the 460gtx overclocked simply doesn't beat the 5850 in all game, the 5850 is 20-30% ahead in some games, and the main problem for Nvidia, the 5850 is massively underclocked at stock and overclocks fantastically(if you get a voltage adjustable one, which all for 3-4 months were). The 5850, easily overclocks by 30%, and quite a lot overclock by 40%, they are immense overclockers, at £200, a 5850 craps all over a stock 460gtx, and both overclocked, the gap is bigger. Its a better card than the 465-480gtx, but its still a ways behind the 5850 on value.
The upshot is retailers should be forced to finally sell at a "fair" price, IE, the price they should do, which means £200 5850's for all, at that price you'd still be mad to go for Nvidia, at £160 it is approaching being a trully excellent cheap performance card, but its still not stunning performance for a similar price to last gen. They'd normally be looking to get 260-275gtx performance, at the same price point of the 5770, so 10% less performance but £40 cheaper would have been the normal goal.
I'd love to know what die size/yields are vs the 275-285gtx though, its 35% smaller than a GF100, so yields and cores per wafer will be well up, I'm not sure theres an awful lot of profit on it, people seem to constantly miss that the 5870 is highly profitable, the 5850 is a fairly low profit part.
It should be even if not a massive profit, at least some, which makes it a massive success compared to GF100 cores, which cost a bomb to make, with crap yields and no profit despite the cost.
I really am very impressed, they actually learnt something on this gen for a change, made tweaks and got a massively higher performance/transistor part out. Even if its not beating a 5850 on price performance, at least its in the ball park and competitive, GF100 wasn't even close.
Also Nvidia(or partners, not sure) should be commended for using heatsinks with proper fans, since blowers became popular I've been telling everyone they are just crap, my 5850 from stock to a heatsink with a proper fan on(thats quieter) dropped 40C under load.