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Author Topic: Speed of SCSI controller  (Read 1813 times)

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Offline desantiiTopic starter

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Speed of SCSI controller
« on: December 17, 2009, 02:52:22 AM »
Just curious I have a a SCSI to IDE converter and use a GVP combo board in my A2000, the speed reported in sysinfo is 2,100,000 bytes/sec but if I use no accelerator and GVP HDD controller I get 2,300,000 as the speed. Does it make sense that an unaccelerated HDD controler gets higher speed that the controller of an 030 50mhz? If so is there any benefit of running SCSI of the acclerator vs the ZII HHD controller?
 
Just as reference, the same setup in an A3000 030/25 gives me 2,900,000 as speed
« Last Edit: December 17, 2009, 05:01:25 AM by desantii »
Amiga 1200/030 50mhz, 64mb ram

Amiga 2000, 030 25mhz, 7mb ram, A2320,  SCSI2CD
 
Amiga 3000/030 25mhz, CF SCSI card

Amiga 4000/ 040 33mhz 274mb ram
 

Offline desantiiTopic starter

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Re: Speed of SCSI controller
« Reply #1 on: December 17, 2009, 04:59:53 AM »
Ill try those tools tomorrow. How do I enable the RDB synchronous transfers ?

Also related, I have 8mb on the accelerator and 8mb on the GVP HDD controller, is there a system slowdown by having 32bit and 24bit ram?
Amiga 1200/030 50mhz, 64mb ram

Amiga 2000, 030 25mhz, 7mb ram, A2320,  SCSI2CD
 
Amiga 3000/030 25mhz, CF SCSI card

Amiga 4000/ 040 33mhz 274mb ram