What is the point of these M.2 drives.
I get they can have greater throughput. Is that for a faster boot time?
Although NVMe allows for much faster boots times, the main advantage as already pointed out is the direct line into the PCI-E 3.0 bus, using up to four lanes for a theoretical maximum throughput of 3.94 GB/s, the real advantage comes with the better NAND flash and controllers used on these drives allowing a huge increase in IOPS over and above the SATA interface drives.
It doesn't really seem worth it for games?
No, it's not, not while there is a large cost differential between NVMe solutions and other cheaper interfaces/busses.
M.2 was/is used for many reasons, space saving is one of them, the fact it can be placed easily into laptop/tablet computers, or very small form factor builds with M.2 drives starting at 42mm and now going all the way to 110mm is great. A lot of people seem to think that a form factor isn't important if it doesn't benefit them personally or isn't perfect for what they do, but the use these see in commercial installations and rack based servers is causing a serious shift in what can be achieved in the same number of U's. Super high density NVMe based disk arrays are something that is becoming more and more common, and being able to use the M.2 form factor rather than a 2.5" sized drive means that you can fit many more drives in to the same system space which means lower TCO. Samsung are already trying to make M.3 a standard for higher density per slot, since they use a wider card and and therefore support a lot more NAND flash chips.
NVMe is obviously something that is a great benefit to people needing high IOPS, or very high sustained throughput, but for your average user of OCUK who plays games then it is by no means a must. Anyone who pays over the odds for one of these drives, rather than say putting more towards a better GPU is crazy, but some people will always want what is best.
