Pros: Don't complain you got the better model. Plus the SATA plug-ins are in the wrong place on the GLFS, they can't be swapped out of a HD case and have trouble with operating in RAID. The HLFS is their RAID model.

HLFS
Average Seek Time 4.2ms
Average Write Time 4.7ms
Average Latency 3ms (nominal)

GLFS
Average Seek Time 4.2ms
Average Write Time 4.7ms
Average Latency 5.5ms

Cons: SSD are taking over mechanical HDs.

Pros: WOW!!!
These bit(hes are advertised at 4-4-3-15 @ 2.1v 800mhz
Well I couldn't get a 3 out of them, best I got was 4-4-4-12 but at only 1.95v 800mhz. So that was good. Same as the 2GB Corsair XMS2 800mhz I replaced with this 4GB set. Same 4-4-4-12 timings BTW.
So because I couldn't get a 3 (all reviewers could?) out of them I went with mhz, I kept the 4-4-4 but upped it to 15 @ 2.1v and got 1066mhz out of them and they can go more but my mother board maxes out at 1066. Now I'm going to do some gaming, COD4, Combat Arms, etc. and put them to the test. Well I tested them for 3 hours with no problems at those settings.

Cons: One of the reasons I went with these sticks was the 3 timing they got with them. Any other sticks with 3 timings are above $200.

Oh well. :~(

Other Thoughts: MB ASUS M2N-SLI Deluxe AM2 NVIDIA nForce 570 SLI
CPU AMD Athlon 64 2X 6400 3.2GHZ+
GPU 2X GeFORCE 8800 Ultra 768mb
PSU Ultra Pro 750w