I am due to upgrade my PC so did a few tests to see how much quicker The new 3 Beta version is compared to the older 2.4, basic tests but has helped me decide on going for the upgrade on speed alone before I have even looked at more features:
thanks for posting…
the interesting thing is the glass rendering… the cromeball inside the glass has much more noise with v3…
http://www.supercreative.co.uk/vray3/Glass3\_0001.png
See my reply here: http://forums.chaosgroup.com/showthread.php?73904-V-Ray-3-0-for-3ds-Max-Beta-Open!&p=590026#post590026
Best regards,
Vlado
Thank you for sharing!!! It is very nice!!! 
Best Regards,
Sangho Jung