Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
prewwii said:
Thanks for straightening me out. I read a white paper on firewire a few weeks ago and got the two reversed. All I had to do was pull out a FW400 cable to see my error.

Here is some information on the external SATA which makes no mention of power. However it does provide some comparisons between the two firewires available and the two external SATA schemes available.

http://www.sata-io.org/docs/External SATA WP 11-09.pdf

I think I mentioned SATA at 1.5 & 3.0mb/s the correct frequency is 1.5 & 3.0Gb/s

Thanks for getting me back on track.

Jim

No problem. But the "No bus power" is a big issue; I hate when USB devices complain about too little power (grandparent's USB HDD) as well as even when a lot of stuff is plugged into my keyboard... Lots o' bus power is good.
 
prewwii said:
Here is some information on the external SATA which makes no mention of power.
That's right, there is no standard power connector for external SATA.
 
Mechcozmo said:
No problem. But the "No bus power" is a big issue; I hate when USB devices complain about too little power (grandparent's USB HDD) as well as even when a lot of stuff is plugged into my keyboard... Lots o' bus power is good.

There are couple problems with bus power 1) unknown quanity as you have discovered. 2) No standardization of voltage. USB uses 5 volts and IEEE 1394a uses 12 volts.

I will throw in a third and forth which are related to each other in a way. Cable length and connector quality. With 5 volts there is not much noise immunity guard band so the cable and connector resistence comes into play if the cable is long, low quality or if the connector has resistance especially if daisy chained.

Twleve volts (FW800) allows for more noise immunity guard band if the hardware receiving the power needs 5 volts only. Cable length and connector quality will still be an issue, although probably not as much of an issue.

Then consider how the source supply in the computer is going to react to sudden changes in loading with hot plugging and shorts circuits whether intermediate or long term.

As an old circuit designer I tend to favor no power on the cables because costs start rising.

Jim
 
This has got to be the most ridiculous rumor I have ever heard. Just when iLink (FireWire) is getting popular with PCs, Apple is going to drop it? Get real!

Many video cameras need iLink to transfer videos, and USB ports aren't gonna cut it. As many have said earlier, Macs are often used for Video Editing, and is a crown jewel for the entire system. Without FireWire, Apple loses the only thing that the public perceives it to be good at.

Unless Apple feels suicidal right now, and decides to kill itself, FireWire is here to stay. Intel is not stupid enough to make Apple kill FireWire just when many of its PC clients are picking it up. It just doesn't make sense, at all.
 
channel2tv said:
This has got to be the most ridiculous rumor I have ever heard. Just when iLink (FireWire) is getting popular with PCs, Apple is going to drop it? Get real!

Many video cameras need iLink to transfer videos, and USB ports aren't gonna cut it. As many have said earlier, Macs are often used for Video Editing, and is a crown jewel for the entire system. Without FireWire, Apple loses the only thing that the public perceives it to be good at.

Unless Apple feels suicidal right now, and decides to kill itself, FireWire is here to stay. Intel is not stupid enough to make Apple kill FireWire just when many of its PC clients are picking it up. It just doesn't make sense, at all.

I agree that killing FW400 (iLink) makes no sense.

The second issue is Apple needs to have a faster port to access to external drives. Neither FW400 or FW800 perform well enough when compared to external SATA which some PC's are being equipped with now.

Jim
 
cant you use any firewire device in a firewire 800 port.. i thought they were backwards compatable
 
slinky0390 said:
cant you use any firewire device in a firewire 800 port.. i thought they were backwards compatable

They are backward compatible electrical signals. The connectors are different with FW800 having more pins to accomodate adding power (12v) and ground. The additional pins and circuitry make FW800 more expensive to implement.

When a FW400 device is added to the chain the entire chain performs at FW400 levels.

Even with FW800 implemented that still leaves Apple short of performance for external hard drives compared to the current crop of Windows machines. Remember Apple, when the MacTel machines come out, will be the top shelve PC because it will be capable of running OS X, Windows and Linux native.

When a user wants they can buy one of these MacTel boxes and install all three operating systems. Then by using OS X exclusively for internet connectivity they can have all the Windows and Linux legacy stuff in a safe enviroment for less difference in cost than any Anti-what ever ware. Then they can stop doing the weekly maintenance associated with keeping the malware at bay on a Windows or Linux system. For buying an Apple box they get better hardware, more versatility and lower cost of ownership. For Apple to position themselves as that desktop provider they need to keep up to external I/O needs and industry standards. To me that means they need to get their external hard drive bottle neck fixed and there are no firewire solutions that can do that job.

Jim
 
prewwii said:
They are backward compatible electrical signals. The connectors are different with FW800 having more pins to accomodate adding power (12v) and ground. The additional pins and circuitry make FW800 more expensive to implement.

When a FW400 device is added to the chain the entire chain performs at FW400 levels.

Even with FW800 implemented that still leaves Apple short of performance for external hard drives compared to the current crop of Windows machines. Remember Apple, when the MacTel machines come out, will be the top shelve PC because it will be capable of running OS X, Windows and Linux native.

When a user wants they can buy one of these MacTel boxes and install all three operating systems. Then by using OS X exclusively for internet connectivity they can have all the Windows and Linux legacy stuff in a safe enviroment for less difference in cost than any Anti-what ever ware. Then they can stop doing the weekly maintenance associated with keeping the malware at bay on a Windows or Linux system. For buying an Apple box they get better hardware, more versatility and lower cost of ownership. For Apple to position themselves as that desktop provider they need to keep up to external I/O needs and industry standards. To me that means they need to get their external hard drive bottle neck fixed and there are no firewire solutions that can do that job.

Jim
Agreed. External SATA connector here we come!!

P.S. Apple should replace the FW800 connector with an external SATA connector (already available on a lot of the recent PC motherboards I have been seeing.) They should keep the FireWire 400 connectors around, because I have seen many a camcorder use it. However, I have never seen a FireWire 800 device, and I don't think I ever will. SATA is 3.0 Gb/s!! Bouyah!!
 
no way

this is a bogus rumor. Apple itself has FireWire peripherls, such as the iSight. it's 150USD. if they scrap the Firewire for the iSight, there will be many unhappy customers. (unless iSight will be built in to every single laptop and desktop of the future??)
 
Demon said:
this is a bogus rumor. Apple itself has FireWire peripherls, such as the iSight. it's 150USD. if they scrap the Firewire for the iSight, there will be many unhappy customers. (unless iSight will be built in to every single laptop and desktop of the future??)


wouldn't be the first time Apple makes us buy new hardware when the current hardware works just fine. But in any case, I doubt Firewire will be dropped. I don't see any reason why.

What would everyone do with External Firewire Hard Drives, etc.
 
I hope you're right.
I don't want to have to buy more widget adaptors for my camera... I'm having trouble keeping track of the original one as it is!:confused: :eek:
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.