AcomData 120 gigs 7200 RPM ext USB2

vbimport

#1

Just picked up this baby from CompUSA for $149. So far its been good, SiSoft Sandra gave decent benchmark results (dont have figures now)

From what Ive heard, this performs better than a WD but lesser than a Seagate. I knew Seagate would be a better choice, but at this price, the AcomData looked better.

Do any of you own this, or the WD or Seagate? I would be interested in knowing your experiences.

Thanks!


#2

I don’t have any experiences with these drives being mounted in an USB2.0 enclosure, so I can’t give you any detailled information.

What I can tell you though, is that no modern IDE drive is used at it’s full potential when mounted in an external enclosure (the USB 2.0 system is a bottlebeck, despite the potential bandwith of about 60mb/sec). Based on that knowlegde I’d assume that the disk inside the enclosure doesn’t affenct the speed that a much. Somehow I think that the USB->IDE convertor is more responsible for the performance than the disc itsself…


#3

FYI: Overall Firewire is best for external hard drives.


#4

@Ssseth Why do you think so? Technically USB 2 has more bandwidth (480 Mbps) than Firewire (400 Mbps).

@Dee-ehn - What you said sounds interesting. Any details on why the IDE2USB convert aint that efficient?


#5

Originally posted by ExpertTech
[B]@Ssseth Why do you think so? Technically USB 2 has more bandwidth (480 Mbps) than Firewire (400 Mbps).

@Dee-ehn - What you said sounds interesting. Any details on why the IDE2USB convert aint that efficient? [/B]

USB 2.0 has indeed more bandwith than FireWire A has. Despite the higher bandwith, USB 2.0 is still outperformed by FireWire. I guess this has to do with efficiency, but I;m not sure about that.

Same goes for the converter story: I don’t exactly know where the performance loss comes up, but I think it’s got something to do with the coversion from the one to the other protocol (IDE (parallel) to USB (serial)) and the overheads of both protocols.


#6

Originally posted by ExpertTech
@Ssseth Why do you think so? Technically USB 2 has more bandwidth (480 Mbps) than Firewire (400 Mbps).

Originally posted by rdgrimes
Only on paper… … My external HD maxes at about 22MB/sec on USB2, about 31MB/sec on firewire. (read speeds)

Posted here.


#7

I also read a bencmark on one website which mentions that Firewire hard drives are a tad faster than USB 2 drives. This came as a surprise to me. Anyways, I feel that I should keep my USB 2 disk as is (though I’, still within the 14-day return policy :wink: ).

However Its also interesting to know that DVD burners behave the opposite. USB 2 DVD burners are a tad faster than Firewire burners (finally some theory proves true!).