Interestingly, I just installed one of my Kingston V300 240GB drives, got Win7 64-bit SP1 installed and updated, and did a dual-boot with Linux Mint 17.3 Cinnamon 64-bit.
Anyways, CDM gives me around 240MB/sec read and write for 4K QD32. Which, is pretty spot-on compared to my Skylake OCed rig, with a Samsung SM951 PCI-E 3.0 x4 M.2 AHCI SSD's random 4K QD32 numbers too.
So, depending on how you look at it, these Kingston V300 drives are as slow as, or as fast as, my SM951 128GB PCI-E SSD!
(OK, the SM951 can push 2GB/sec sequentials, about 4X the Kingston, but random is really where an SSD matters.)