SATA III VS. PCI-e (SSD performance)

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sushimaster

New Member
New member, excuse me if there is an up to date thread on this subject. Glad to be here, hope I can be of some help to someone out there. Seeing as how I just registered, it is obvious that I had a question for you. Thanks in advance!

Basically, would a pci express SSD have higher performance than a raid 0 array of SATA III drives?

Specifically, if the highest performance PCI-e drives are ~1.5 Gb/s and I have a raid 0 array of three or more SATA III drives (@ ~.5Gb/s) will I see similar performance? Will I require a separate RAID controller to get peak performance? Are there any charts that address this specific inquiry?

Thanks again! :D
 
sushimaster said:
New member, excuse me if there is an up to date thread on this subject. Glad to be here, hope I can be of some help to someone out there. Seeing as how I just registered, it is obvious that I had a question for you. Thanks in advance!

Basically, would a pci express SSD have higher performance than a raid 0 array of SATA III drives?

Specifically, if the highest performance PCI-e drives are ~1.5 Gb/s and I have a raid 0 array of three or more SATA III drives (@ ~.5Gb/s) will I see similar performance? Will I require a separate RAID controller to get peak performance? Are there any charts that address this specific inquiry?

Thanks again! :D
Click to expand...

The thing with a RAID0 is that while it makes your drive performance faster it's not across the board. Certain tasks are much faster on a RAID0 and others aren't much faster than you would get with a single drive.

I'd say linkin is right, the best way to get fast drive performance right now is an SSD.
 
Hmm...

Well, thank you both...

linkin, I was actually posting the question because of the revodrives. From what I read on newegg... the lowest end/highest performance revo drive is 480GB @ $1,659.99...
Max Sequential Read
Up to 1500 MB/s
Max Sequential Write
Up to 1250 MB/s
4KB Random Write
Up to 230,000 IOPS

Now... This SATA III drive from corsair
is 60GB @ $149.99
Max Sequential Read
Up to 555MB/s
Max Sequential Write
Up to 495MB/s
4KB Random Write
Up to 80,000 IOPS

While it wont provide the same capacity, from the look of these numbers it seems like three of these drives in raid 0 equate to the same performance (if not better, excluding capacity) as the ultra expensive RevoDrive... Am I overlooking something? I've been looking around today for numbers regarding the SATA III throughput. Does it provide 6 Gb/sec PER SATA channel, or in total?

Thanks for the help guys, much closer to figuring this out...
 
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Does it provide 6 Gb/sec PER SATA channel, or in total?
Click to expand...
Should be per channel.
While it wont provide the same capacity, from the look of these numbers it seems like three of these drives in raid 0 equate to the same performance (if not better, excluding capacity) as the ultra expensive RevoDrive.
Click to expand...
RAID0 doesn't scale linearly, I don't think you are really supposed to RAID SSDs either.
 
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