Greets,
Going from WZ final to YH I haven't noticed any change.
But from WW to WZ final you should.
If you're running good memory with the settings at max... going from WW to WZ and not getting higher memory scores something is wrong. One of the reasons people had problems with WZ final is because the memory timings are much more aggresive. In my case my memory scores at 133MHz were almost the same as memory scores at 140MHz with WW bios. This is on a Abit KT7A with Crucial 133MHz CL2 memory.
www.thetechzone.com
Has a memory tweaking guide up with Micron memory on an Abit KT7A... They show various settings and memory benches... tho they only use Sandra. At the end they also show the difference that the WZ bios made. Its not a great/complete guide, but it shows some of what can be done on the Abit boards and a bit of what the WZ bios does.
-DW