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Discussion in 'iPod' started by matthewcap, May 20, 2008.
How fast is flash memory compared to hard drive in RPMs?
Flash memory doesn't have any moving parts. What specific performance aspect are you asking about aside from RPM?
All depends on how fast you can throw it.
I know a pitcher can get it up to 96mph, though I don't know how fast it'll spin at that point.
Anyhow, RPMs are not a measure of a drive speed.
All that does is lower seek times.
What really counts is the mechanical transfer speed in MB/sec ... this is the speed beyond the cache (which is also pointless since the bus sucks/fills the cache in no time) which makes the drive crawl to a lot slower speed.
RPMs are about as effective at judging the speed of a drive as GHz is for comparing all the CPUs made in the world.
What is the mechanical transfer speed then of the Ipod Nano 3g and the Ipod classic?
what are you talking about? a 2.0ghz g5 kicks the crap out of a 1.8ghz core 2 duo everyone knows 2.0 >1.8
The old HD iPods are likely about 40MB/sec.
An old iPod nano may be 10MB/sec.
Newer ones probably closer to 40-60 MB/s.
HD can transfer say 70MB/s, Flash memory around 60MB/s. SSD can go 300MB/s. Flash memory and SSDs are not the same. Yes SSD are based on flash memory, but the designs are different and so are the manufacturing costs.
Well he did ask about the iPods which have to go through the USB, and the old originaliPod Nano's tested were turd slow. So I may have been too generous for USB2 speeds I was remembering it as too close to FW400.
A standard flash chip can do the Kessel run in about 12 parsecs.