4850@750Mhz vs 4870

[Truckchase!]

here's a different take on how to tell what impact mem bandwidth is having...

1> benchmark 4850 @ stock speeds
2> oc the GPU and vMem by a static percentage (15&#37 and bench
3> OC just the GPU and Just the vMem by the same static percentage and benchmark each oc seperately.

Compare the results to see how large of an impact the vMem overclocking has on performance vs. the gpu. In all actuality, you need only to do step 1 and 3, but 2 is always fun to compare against to make sure there isn't an odd unknown variable.

Here's an example from when I did this on a 2900xt:
http://www.xtremesystems.org/forums/...5&postcount=31

I'm willing to do this, as I have an unopened HIS 4850 sitting here, but last night I ordered a 4870, so I was just gonna return the '50. Anyone wanna buy a slightly used 4850 for $175 next week so I can do the 4850 benching this weekend?

edit: I'll do the testing on the new 4870 when I get it as well.... I've got an automated test suite that makes it pretty easy.