If a high performance SATA II RAID setup is showing 500-800 MB/s in read and write capabilities in benchmarks, that's not reaching the SATA limit, right?

SATA II is 3 Gb/s or 375 MB/s. Does this mean that it can only read/write up to 375 MB/s OR that it can only TRANSFER from one HD to another at 375 MB/s maximum? I believe it's the latter, meaning it's not worthless if your RAID 0 array can read AVG. 900 MB/s.


Also, a bonus question if anyone wants to try. You don't have to read cuz it's kinda long:

I'm wanting to be able to FRAPS video game footage at a higher resolution without dropped frames (i.e., laggy video).
Here's a benchmark program on my RAID 0 array, which is average. Better/faster than non-RAID 0, though. Notice on the 1024 or 8192 line. My write speeds are 60-70 MB/s (my read speeds are 100 MB/s average).

If you record at 800x600 how much data needs to be written per second? Here's the math:

800x600 = 480,000 total pixels
You want FULL color? Ok. That's 32-bit which means 32 bpp (bits per pixel). Or 4 bytes per pixel. So how much is an uncompressed 800x600 image? 480,000 x 4 bytes = 1,920,000 bytes = 1.83 MB

So when most people fraps they're demanding more than their HD's can handle. 1.83 MB x 30fps = 55 MB/s

So I can record with Camtasia or FRAPS at 800x600 in 32bpp. But not 1024x768 or higher or I'll get slightly laggy video sometimes.


(FYI: 1024x768, 32bpp, 30fps = 3,145,728 bytes = 3.1 MB // 3.1 MB x 30fps = 93 MB/s)Pump, pump the jam. Pump it up! BUMP THIS THREAD UP!