NEC CD-ROM put to ultimate test

Posted by: maclover1986

NEC CD-ROM put to ultimate test - 10/27/04 07:26 PM

[censored] (factory) CD-ROM: about 60 minutes per CD.
NEC: about 2 minutes per CD!!!!! B)

Awesome! I couldn't believe my eyes when that CD finished imaging so soon.

I think, instead of donating my 6360, that I will put it in the case of my old HP Brio PC, where I have room to expand to my heart's content.



Like the McDonald's commercials, "I'm Lovin' it!"

maclover1986
Posted by: whitlock

Re:NEC CD-ROM put to ultimate test - 10/27/04 08:22 PM

2 minutes? On A 6360 CD SCSI. Either you have the most slim OS put together, a TON of RAM, or just lucky. Sorry, the B.S. alarm went off, and just poking to see how you got those results. It would usually take around5-7 minutes on those drives for me.

:huh:


Why I edited: Decided there was a better smiley to use, and didn't finish typing what I wanted to. At work

Post edited by: whitlock, at: 2004/10/28 03:30
Posted by: TutAnGeek

Re:NEC CD-ROM put to ultimate test - 10/27/04 11:29 PM

SCSI I througput is 40Mbits/sec
Therefore, if the bus were the limiting factor, the minimum time would be 2.1 minutes.

the "X" means how many times faster than a 1x drive. A 1x drive would play 70 minutes (650 megabytes) of music on 70 minutes (at 1x), aka .15MB/sec. I can't find how fast you said that your drive was, but if the drive were the limiting factor, the minimum speed would be 35x, but that would be faster than the throughput of the SCSI bus. Of course, the drive almost never hits its actual target rate, so we'll say you need a 40x drive.

Now we can see what the cap is roughly for copying the data by looking at the "60 minutes" for the stock 8x drive. that would mean that if it *is* spinnign at 8x, and piping out 1.2MB/sec, the actual transfer rate from the CD to the drive is .18MB/sec (Just over 1x). This is, of course, wayyy below that of the 8x cd drive, and way below that of the limit of the SCSI bus. Therefore, one would imagine that speeding up the drive would have no effect on the speed of an oppertation.

Or perhaps all of the numbers were just GROSELY exagerated
Posted by: oojacoboo

Re:NEC CD-ROM put to ultimate test - 10/28/04 12:46 AM

ok tutan, that was a little too deep of thought I think. But I kind of see where you are going. wink
Posted by: TutAnGeek

Re:NEC CD-ROM put to ultimate test - 10/28/04 11:09 AM

We've allready established that I have no life, I thoguht :P
Posted by: maclover1986

Re:NEC CD-ROM put to ultimate test - 10/29/04 09:43 PM

ok tutan I admit i was exaggerating. But it did seem like the old drive was taking an hour to copy a whole cd. Your estimated speed was correct: it was 40x.
maclover1986

Post edited by: maclover1986, at: 2004/10/30 04:45
Posted by: TutAnGeek

Re:NEC CD-ROM put to ultimate test - 10/30/04 01:49 AM

:P