Normal RAID0 speeds?

[itachipirate]

Hey I've just finished benchmarking my hard drives and I want to know if this is a normal speed for RAID 0. I have one 500gb 7200rpm Seagate as my boot drive, non RAID. I have 2 250gb 7200rpm Seagates in RAID 0 for games and anything I want to be faster. I was thinking of which hard drive to put GTA V on, because Defraggler rated my C drive at a higher speed than my D (RAID) drive. I'm using the AMD onboard RAID controller on the Sabertooth 990fx R2. Driver version 3.2.1540.92. All drives are on the newest Seagate firmware. CC49 I think? The controller had to be set to all RAID mode for it to work. I just didn't assign a RAID task to the 500gb drive. The only reason I ask is because I've had a lot of hard drive issues on this computer and I just want to know if my RAID 0 is getting the full speed it should be. Here are the benchmarks:

 

Non RAID Windows drive:

 

 

RAID Drive:

[TheDev]

when in raid 0 you should only have one drive letter 

[itachipirate]

when in raid 0 you should only have one drive letter 

Re-read. The main drive isn't part of the RAID 0 array, and I included the benchmark for that as well. The D drive is 2 hard drives

[TheDev]

Re-read. The main drive isn't part of the RAID 0 array, and I included the benchmark for that as well. The D drive is 2 hard drives

if thats the case, looks good to me

[itachipirate]

if thats the case, looks good to me

OK Thanks. Should I be expecting more out of the RAID array? My thoughts were that posting the C drive benchmark would help because it's roughly the performance I'd expect from one of the single drives in RAID right now