and for an extra £30 you can double your ddr2 up to 1gb. but seriously dude. dadges card is better for the money. it would be cheaper too if ocuk didn't rip the knickers out of p&p. to have a 256mb card running more than a 22" screen at full resolutions (1680x1050 or more) is right on the max performance. i have a 7600GS 512 running arma @ 1680x1050 and it rocks at full settings. dadge on the other hand has a 7600GT 256 and running the exact same settings, his pc struggles at times. i would go for the 1gb because i believe that it is much better to have too much than it is to not have enough.
fair enough your cards ram speed is more than double but as i said befor if the card is only 128bit than ddr3 for that card is overkill. the playstation 1 is 128bit. dadge's is also 128 bit but the memory speed is much better for that bitrate.