Excellent speed in pci express 2.0 motherboard; good speed in pci express 1.1 motherboard
I want to use the pex-40054 in a motherboard that has only sata ii ports (no sata iii ports) so i can get to sata iii speed without getting a new motherboard. Here is what i find, using a transcend ssd370 512 gb drive, which is rated to have max r/w speed of 560/460 mb/s..In the asus p8z77v-lx board, which has both sata ii and sata iii ports, here are the ssd's speed (without using the pex-40054 card):- in the sata iii port, the max r/w speed is 504/457 mb/s, using crystaldiskmark 3.0.1- in the sata ii port, the max r/w speed is 275/262 mb/si put the pex-40054 into a gigabyte p45-ud3p board, which has only sata ii ports, and supports pci express 2.0. I put the pex-40054 into a pci-e x16 slot and connected the ssd to one of the 4 ports.- now, the ssd's max r/w speed is 479/458 mb/s, quite close to sata iii speeds and much faster than sata ii speeds.Next, i put the pex-40054 into a gigabyte p35-ds4 board, which supports pci express 1.1. Again, i put the pex-40054 into a pci-e x16 slot and connected the ssd to one of the 4 ports.- now, the ssd's max r/w speed is 378/285 mb/s, which is still slightly faster than sata ii.Conclusion:the pex-40054 can achieve speeds faster than sata ii, and close to sata iii, in motherboards that support pci express 2.0.Even in motherboards that support only pci express 1.1, the pex-40054 can give you faster speed than sata ii.Note that i have not used the hyperduo capabilities of this card. I consider this a bonus but i have no plans to use it.Hope all of this is helpful.