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Panasonic 40X CR-593 CD-ROM
Panasonic 40X CR-593 CD-ROM - PCSTATS
Abstract: $50 40x CDROMs - what can world be coming to? Well Pansonic has put out a fairly decent drive, which we benchmarked to death. Looking for a cheap drive but don't wan't crap? READ on!
 73% Rating:   
Filed under: Optical Drives Published:  Author: 
External Mfg. Website: Panasonic Apr 27 2000   Max Page  
Home > Reviews > Optical Drives > Panasonic CR-593

40X Panasonic CR-593

For $49 why bother getting anything other then a 40X CD-ROM? Sure you could get a 72X CD-ROM these days, but it won't be as inexpensive. Panasonic has always been a staple CD-ROM manufacturer, and we recently picked up this little 40X CD ROM for a bare bones system we're building where price is the deciding factor - but does a low budget mean low performance?

The Panasonic CR-593-B is made by Matshita and sports the typical front end of your average CD-ROM. Features of this drive include:

  • Numbered volume control wheel
  • Head Phone Jack
  • Disc Bootable: yes
  • Drive activity light
  • Analog and Digital Audio output
  • E-IDE / ATAPI interface
  • Geared tray
  • Cost ~$50 CDN

That stuff is all well and good, but how about a few benchmarks to wet the appetite. We tested the CR-593 on Sandra, Maxa CD Pro and CD Speed.

MAXA CD-PRO Benchmarks 40X Panasonic 40X Sony 24X CyberDrive





Cache Size 1.27MB 1.27mb 1.27mb
Transfer Rate 2.3Mb/s 1.97mb/s 1.71mb/s
Read Ahead Size 1.05Mb 1.05mb 1.05mb
CPU Load 61% 69% 75%
Avg. Access Time 0.097sec 0.085sec 0.136sec
Speed Factor 13-speed 13-speed 11-speed
ROMark 6.8 7.5 5.0

CD Pro showed of some decent performance from Panasonic's 40X drive, even beating Sony in the CPU Load & Transfer area by a few percentiles. Sony came back in the second round to kick Panasonic's butt over access time, and left with the higher ROMark.

Sandra's benchmarks proved the drive to be quite good. Just for fun we tested it with DMA enabled and without DMA enabled to see what the difference in performance might be.

Benchmark with DMA enabled yeilds an index value of 1867.

The results of benchmarking with DMA disabled illustrates a 70 point drop in performance with this particular drive. Unfortunately even with DMA enabled the drive scores below that of a 32X reference CDROM in Sandra.

Sandra Specs
DMA Disabled Enabled
Drive Tech 18X 18x
Spindle speed 9445 RPM 9752 RPM
Buffered Read 340 Mb/s 381 Mb/s
Sequential Read 2673 Kb/s 2760 Kb/s
Random Read 482 Kb/s 528 Kb/s
Avg access time 89 ms 78ms
Drive type Matshita CD-ROM CR-593

CD-Speed gives a nice picture of how the drive performs throughout a CD-ROM. Showing an average speed of 22.23X and a random access time of 80ms, it shows a lower CPU usage then the CD pro benchmark. At 8x (maximum shown) the CPU usage is at 33%. 

From the graph we can see the drive speed comes up to 24X but never crosses it. Actual performance is more akin to 24X, rather then 40X.

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Contents of Article: Panasonic CR-593
 Pg 1.  — Panasonic 40X CR-593 CD-ROM
 Pg 2.  Nuances & closing thoughts

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