Quote Originally Posted by halo112358 View Post
1.4ns is not tighter than 1.0ns, it's looser - that's why you're able to get more mhz out of your ram. There could be more to it than that, if so I'd be happy to hear about it.
What gave him a boost in overclock was the reduced voltage. 1.4ns timings ARE tighter than 1.0ns timings (1.4ns = DDR1400, 1.0ns = DDR2000). Apparently the tighter timings didn't decrease his overclock by much, but they do increase performance/mhz.

Even when GDDR3 chips run cool (and probably GDDR4 chips too) they have an optimum voltage to run at. Sometimes, like in this case, it is below stock.

This is just a very quick test with the card (I don't have much time now):



This means +-DDR2200 should be benchable. Maybe I'll do some hard mods to the card and play with vmem