I'm still using the S41 client on my AMD boxes as it seemed marginally faster than the D40 client. None of my AMDs do SSE3.

Behold, a web site with Much Happy Goodness!

http://einstein.terrorfront.info/en/index.htm

It lists the latest of Akos’ four optimized clients, explanations, older versions, and links to two self-calibrating clients.

However, I am slightly confused by one point. I originally was using an S-series client on my AMD Athlon XP 3200+, and it ran quite well. I read that for Athlon XP processors, it is better to use the D-series. In the Einstein forum it was said that the 3DNow code utilized an extra area of the processor for floating point calculations, and thus gained a better speed increase. I switched to a newer version of the D-series and had better performance. I’ve continued to use the D-series.

Now, on the web site, I just noticed it says, “If you found your CPU supporting both 3DNow® and SSE, use the S41.07 version.” Does anyone have any suggestions as to which is better for AMD Athlon+ processors? Granted, with D41.14 my time for work units is about 45-50 minutes, so I’m not terribly worried. If I switch clients, it takes several days to a week for the “Estimated time” to re-sync. (I run several projects with a 4-hour slice, so it will be a day before Einstein even runs.)

well you lucky AMD people get a choice

the S series is still definatly the best for Intels

Well, not that 3DNow would be an option; but if all is holding as some preliminary expectations suggest, there will be turn around. Comming in the form of Conroe, once Intel releases it. And like the X2s from AMD, it will be multi-core and x86-64... It's just that on benchies thus far, even at some of the lower clocked models as I remember, it was smoking an FX-60, while AnandTech was allowed to play around with the pre-release chip...