Max Ime :
Hi I just bought a brand new an Asus z87-a, kingston SSDNOW v300, Geforce 770, 8Gb DDR1600mhz, I5 4570, Corsair TX 750w.
When im running AS SSD Benchmark i got very low read (175 Mb/s) performance and overall low performance.
Last mobo bios is installed and last SATA AHCI Intel driver are installed.
I am AHCI enabled in Bios, New WIn7 install, full Windows Updated and Intel Storage Tool said that im 6gb/s connected.
The SSD seems to have the last firmware
I am using a 6gb/s cable brand new
Thank you
The TL;DR response is exchange your drive under warranty or through the retailer you bought it from. The new drive fixed the issue for me. Read below for details:
I had a similar experience, using CrystalDiskMark to bench, but also used the program you mentioned as well with the same result. I am on a laptop -- Toshiba S55-A5279, and I also got read speeds anywhere from 170-180 MB/s, which seemed slow. I performed a secure erase via PartedMagic, and installed the Windows 8 x64 default factory OS from the USB key I had created from the recovery media creator that came pre-installed, and the issue persisted. Before this, I was booting from Windows 7 x64 SP1 via legacy CSM and that's when I noticed the slow read speeds. In all cases, the native AHCI drivers vs the Intel RST ones did not make any real difference, and ACHI was set to performance mode when CSM booting.
I was curious and took the SSD out of the Toshiba laptop and benchmarked it on my desktop machine, and the results were very similar, maybe 8MB/s more in seq read speed and similar numbers for 512k read/write, some +/- 3-5MB/s. The only significant difference was the QD32 sequential writes on the desktop 83MB/s vs 135MB/s, but it still pales in comparison with a different V300 drive that I have in a different Acer laptop on Windows 8 x64 that scores 380 MB/s in sequential reads on that machine.
It turns out that the SSD drive itself was the issue, and not the test machines.... I exchanged the drive for a different one and the new drive benchmark read speeds hit 400+ MB/s on my desktop, just as the drive that was in the Acer laptop. Write speeds are, again, unchanged. The new drive has a different firmware ending in F1, and was manufactured in Taiwan, as opposed to China. Other than that, the CrystalDiskMark benchmarks for the new drive and the one that was in the Acer laptop are pretty much identical.
I also should point to this thread -- there is at least one other person whose drive was 'defective', and I added my own response there as well:
http://www.overclock.net/t/1380526/kingston-v300-help