JohnnyRoy
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Apr 1, 2006, 11:58 AM
Post #2 of 3
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My guess is not very noticeable at all. I have a 10K Raptor as my C: drive but I use a RAID 0 of 7200RPM SATA2 drives for HDV editing. I really don’t feel any difference in my system and using a disk speed program here are my measurements:
WD RAPTOR 10K:
Linear Read = 68.32 MB/sec
Random Read = 5.02 MB/sec
Access Time = 5.35ms
Score = 12968
Price per MB: $2.19
WD SATA2:
Linear Read = 60.07 MB/sec
Random Read = 3.42 MB/sec
Access Time = 7.91ms
Score = 7639
Price per MB: $0.40
WD SATA2 in RAID 0:
Linear Read = 121.68 MB/sec
Random Read = 3.41 MB/sec
Access Time = 7.38ms
Score = 16429
Price per MB: $0.40
I believe the Linear Read measurement is probably the most important for reading video files. Based on those measurements the Raptor cost 5.4x more per megabyte but only a 12% gain in speed of linear reads over a regular drive. It is 30% faster at random read and access time so I guess that’s what you are paying the big bucks for. To me, it’s just not worth it by any measurement. If it were (2x) twice as fast maybe you could justify 5x the price. But at 12% linear and 30% random improvement, it just doesn’t seem like it’s money well spent. I would NOT buy a Raptor again unless they came way, way down in price.
I guess if you need the fastest drives regardless of cost, (and I do mean regardless of cost) you could RAID some Raptors and have a slightly faster file system but I would rather put that money somewhere else. My 500MB RAID of 7200RPM SATA2 drives cost $200. The same size RAID of Raptors would cost $1,097!!!
Bottom line: I doubt highly that you will see any significant performance improvement to justify the enormous cost. But some people swear by them so this is just one man’s opinion.
If you want to see the PC that I built for HDV editing, my total system spec or on the PC Equipment page on my web site.
~jr
Co-author: VASST Instant ACID and Instant Vegas Movie Studio books
Developer: VASST Ultimate S, Celluloid, GearShift, and other VASST Software plug-ins
Web site: http://www.johnrofrano.com
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