Can anyone suggest the most efficient graphics driver for the below configuration:

Class:   display VGA
Vendor ID:  1078h  Cyrix Corporation
Device Id: 105h, 5530 Video [Kahlua]
PCI Index : 0
PCI Int Pin : NC
Interrupt Line : 0
CPU Interrupt : 0h
PCI mem Address : 40800000h enabled

I am using the vesabios driver for the above configuration but with this driver the io-graphics is taking around 60-70% 
 CPU if I simply move the window across the sscreen. I am not sure the problem is with the io-graphics or with the 
driver.If anyone knows anything about  this issue then please share with me.


Thanks