ATA 133 and ATA 66

[SWT4ai]

I don't know where I can post this, but I hope someone can help me on this. I have to hard drives. One is an ATA 133 and the other ATA 66. The ATA 133 is set as the master and the ATA 66 is set as the slave drive. Will this make both hard drives run at ATA 66? Or are they independent of each other?

 

[Heisenberg]

Both will run at ATA66 if they are on the same channel. If they're on different channels, then they can run at different speeds.

Edit: Hmm...I guess on the newer chipsets drives won't slow down even if they're on the same channel, even though the info I saw stating that they would was pretty recent. In any case, the sustainted transfer rate of your ATA100 drive isn't going to be that much different from the ATA66 one, so it won't make a whole lot fo difference anyway.

 

[farmercal]

It's been said before on this forum that each drive will run at it's rated speed. I had an ATA 100 and an older Quantum hooked up together before I obtained a newer backup drive and if it was slowing down my Seagate, then the old hard drive was screaming (which isn't possible - believe me, because it came out of a Compaq computer).

 

[farmercal]

Check out this link and read LordEvermore's response.

Link

This is why I said they will run at their own speeds.

 

[Sid59]

in short .. use the cable that came with the newer hdd.

 

[SWT4ai]

thx for the help guys.

 

[thorin]

Originally posted by: SWT4ai
I don't know where I can post this, but I hope someone can help me on this. I have to hard drives. One is an ATA 133 and the other ATA 66. The ATA 133 is set as the master and the ATA 66 is set as the slave drive. Will this make both hard drives run at ATA 66? Or are they independent of each other?

Most modern motherboards and drives support independant device timing, so as long as you're using a ATA66/100/133 cable (ie 80 wires) even if you attach a ATA33 drive both drives will still operate at their best speed(s). Unless you attach a drive that is running in PIO mode (ie: an older optical drive that runs in PIO mode will force whatever drive it shares a cable with to run in PIO mode ....)

Thorin

 

[LED]

Independent and even if they weren't, which the are, you wouldn't see much difference between the 2 because PATA max transfer rate between the ATA66 vs ATA100 vs ATA133

 

[thorin]

Originally posted by: LED
Independent and even if they weren't, which the are, you wouldn't see much difference between the 2 because PATA max transfer rate between the ATA66 vs ATA100 vs ATA133

Dude I think you somehow hit Post before you were done typing because that doesn't make much sense

I'm sure what he's getting at is the fact that the best ATA drives on the market Max at ~57MB/Sec which is below ATA66 spec.

Thorin

 

[LED]

LOL...yea I did, got a call and click Reply instead of answering the phone...forgot where I was at so just forget abput it