Slow Intel 750

[dawgmatix]

Just bought an Intel 750 400gb ssd and have it plugged into a pcie3.0 x4 port on my Dell T5600 workstation. The speeds I am getting are much slower than the speeds reported on http://www.thessdreview.com/our-reviews/intel-750-pcie-ssd-review-400gb/3/ .

Machine spec is as follows

1. 2x Intel Xeon E5-2650
2. 16 GB RAM
3. Windows 10 64 bit.

I have tried the following things

a. Installed latest intel nvme driver.
b. Ran trimcheck and verified that trim is enabled.
c. Installed Intel SSD toolbox and flashed latest firmware.
d. Verified in toolbox that drive is being detected as pcie 3.0 x4.
e. Switched to high performance power plan.
f. disabled windows defender.

Any other pointers for me to try?

Screenshot of benchmarks attached.

 

[timbotim]

My machine is a home-brew system, but using a pcie3.0 x4 like you. OS is w7x64, CPU is i7-4970K, 32GB DDR3
My performance (R/W) is:
seq = 1473/1057
512K = 1092/1035
4k = 43/114
4k QD32 = 1038/986
Note that TSSDR use a virgin disk (mine has 50-odd GB of data on it), and likely follow their own optimised setup (this is explained somewhere on their site, it wouldn't hurt to read through this). I tend to ignore QD32 figures as I struggle with their relevancy, when I did a QD trace some months back my usage (device & system simulations over many hours) only occasionally went to 2 (<1% of the time), the rest of the time it was at 1.

 

[dawgmatix]

I went through the tips on the ssdreviewwebsite and implemented all of them but didnt see much of a difference. On a whim I changed the pcie slot that the drive was connected on. Used another spare slot (a pcie 3.0 x16) and I see ~30% better numbers on sequential IO and also improved latency numbers. I dont have a good explanation for this disparity yet.

 

[Coup27]

In my experience OEM machines never perform as fast as whiteboxes built from enthusiast parts.

 

[bradly1101]

I went through the tips on the ssdreviewwebsite and implemented all of them but didnt see much of a difference. On a whim I changed the pcie slot that the drive was connected on. Used another spare slot (a pcie 3.0 x16) and I see ~30% better numbers on sequential IO and also improved latency numbers. I dont have a good explanation for this disparity yet.

I believe these drives do better on CPU connected PCIe lanes than the ones off the PCH.

Mine on X79 in a CPU connected PCIe slot (with the latest firmware/drivers):

 

[dawgmatix]

In my experience OEM machines never perform as fast as whiteboxes built from enthusiast parts.

Agree with you on this completely. Only reason I got the Dell box was because of a deal DELL was running back then, the whole machine cost me less than the retail price of the two E5-2650's that came with it. However once I got it, I realised that the power supply as shipped only supports a single 6 pin video card.

Am waiting for the AVX512 xeons to show up before building my next box.