***Asus Rampage III Extreme Owners Thread***

[Lee_Kay]

This is wrong.
The theoretical maximum of a single PCI-E lane is 640MB/sec, which is above 6.0Gb/sec.
PCIe 2.0 delivers 6 GT/s, but employs an 8b/10b encoding scheme which results in a 20 percent ((10-8)/10) overhead on the raw bit rate, which brings transfer down to about 500MB/s.


My two x25-m G2's get up to 480MB/s reads on my marvell chip with superspeed. You're doing it wrong. Maybe drive alignment or stripe size.


Sounds to me like you didn't do your research before you purchased and got burned. You won't find any pity here.

I bought the board when it first came out back in 2010. And if you look at the post bios screen on the Marvell screen it clearly states Maximum Bandwidth on one PCI-E is 5Gb/s Also PCI-E 2.0 spec is 500Mb/s

"PCI-SIG announced the availability of the PCI Express Base 2.0 specification on 15 January 2007. The PCIe 2.0 standard doubles the per-lane throughput from the PCIe 1.0 standard's 250 MB/s to 500 MB/s. This means a 32-lane PCI connector (x32) can support throughput up to 16 Gb/s aggregate. The PCIe 2.0 standard uses a base clock speed of 5 GHz, while the first version operates at 2.5 GHz."

Im using windows 7 64 bit Ultra. so no alignment is needed.