1800 MB/s from a PCIe 2.0 x4 based controller, eh? You'd have to bump the max TLP payload size up to at least 256B to squeeze that kind of efficiency out of an x4 link, unless there's some sort of RAM caching going on here...
Exactly. The RevoDrive 3 x2 was also PCIe 2.0 x4 and couldn't achieve more than 1500 MB/s due to the combination of interface and overhead. The theoretical maximum throughput for PCIe 2.0 x4 with a typical max TLP payload size of 128B is right around 1645 MB/s, hence 1800 MB/s seems fishy to me.
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eystman - Friday, January 10, 2014 - link
Good to know they're planning an NVMe driver update. Thanks!hojnikb - Friday, January 10, 2014 - link
I wonder if they fixed the overheating issues with the controller..repoman27 - Friday, January 10, 2014 - link
1800 MB/s from a PCIe 2.0 x4 based controller, eh? You'd have to bump the max TLP payload size up to at least 256B to squeeze that kind of efficiency out of an x4 link, unless there's some sort of RAM caching going on here...SignalPST - Friday, January 10, 2014 - link
OCZ's RevoDrive 3 X2 maxed out at 1500MB/s sequentialrepoman27 - Saturday, January 11, 2014 - link
Exactly. The RevoDrive 3 x2 was also PCIe 2.0 x4 and couldn't achieve more than 1500 MB/s due to the combination of interface and overhead. The theoretical maximum throughput for PCIe 2.0 x4 with a typical max TLP payload size of 128B is right around 1645 MB/s, hence 1800 MB/s seems fishy to me.DanNeely - Saturday, January 11, 2014 - link
PCIe 3.0 controller perhaps. If that's the case though they've still got plenty of room to improve the platform.repoman27 - Saturday, January 11, 2014 - link
I thought of that, but no, it's only gen 2 according to: http://www.lsi.com/downloads/Public/Flash%20Storag...speculatrix - Monday, January 13, 2014 - link
1800MB/s should be quite achievable if the data is very amenable to compression, you'd need customised drivers in the OS for that.