How does the ATI Radeon 4850 still hold up?

There's a pretty nice deal for the card at $80 Canadian. I'm debating between this card and a 5750, which costs a good $50 or so more. Just wondering if the difference in performance would be worth the cost. I play at 1920x1080 resolution, so I'm rather worried that the 4850's 512 mb ram would be holding my performance back quite a bit, compared to the 5750's 1 gb.

Here's the link to the 4850:

http://ncix.com/products/index.php?sku=40867&vpn=AX4850%20512MD3-PH&manufacture=PowerColor&promoid=1062

the hd 4850 isnt actually half bad but considering your resolution id actually wait save up a bit more and nab a nice hd 5770 or 5830 which are MUCH better gpu`s at that reoslution.

Thanks for the replies guys. I know that the 5770 would be absolutely perfect for me, but I'm not sure if I want to slap down $180 w/tax on a video card. I'll certainly think about it though. Again, appreciate the suggestions :)

got a 4850 512mb, and i love it. plays all the console ports at full settings at 1680x1050. dead space, borderlands, COD4 and MW2 are silky smooth with all settings up full (this was even on my core 2 duo e6400, now on i7 930)

Getting a HD5750 for $140 to outdo the just as strong $80 HD4850, this is really one crappy idea!

The resolutions/settings where the 512mb HD4850 have trouble with the HD5750 1GB would also have trouble with as they both have to week GPU's to make a real diffrence on the 512mb diffrence between them!

Anything below HD5770 isn't a smart move.

plays just Caused 2 on my 4850 almost maxed out on my i7 930, runs great!

If you have a motherboard that supports it crossfire 4850's makes a pretty beast setup at a low price.

Just for anyone who cares, I went ahead and got myself an XFX 5770. I originally wasn't going to spend this much on a new video card replacement, but the 4850 was sold out. And I figured since I was spending over budget already, I might as well push a little further and get the 5770 that's much faster than the 5750.

Anyway, thanks again for the replies!