Why are my write speeds so slow?

I'm using a 160GB X25-M G2 SSD in my Envy 14, and I recently did a CrystalDiskMark test for the first time, even though I've had the SSD for over a year and a half now.

Due to image hosting problems (most US-based image servers are blocked in China), I'll type out my scores:

Read Write
Seq 219.8 76.13
512K 176.0 46.91
4K 16.72 3.641
4K QD32 159.5 4.089

That's on the default test settings - 5 runs, 1000 MB. My drive is 67% full right now and has rarely been over 70%, never up to 80% that I know of. Leaving aside that none of my scores meet those in the CrystalDiskMark homepage's screenshots of an 80 GB X25-M G2, I'm a bit worried about the 4K and 4K QD32 write speeds. On their site, they say that Norton causes problems for the 4K QD32 test, but I use MSE.

What could be causing the poor results, will they affect my actual usage, and is there anything I can do about them?

 

I thought G2 write speed is about 80MB/s so not a big difference there.

Nothing to worry about, 4K Random @ 3MB/s is more than enough for typical laptop. It is very difficult to generate actual usage pattern that make this a bottleneck.

for comparison, check a typical HDD(even those 15K one).

 

Check out DR650SE's links for registry tweaks to improve 4k scores.

to

Intel 320 series 320 GB RAID 0 array. You SHOULD be getting like 80 MB/sec 4k write, at least my single 120 GB and 160 GB G3 drives were getting that, I believe Commander Wolf's 80 GB G2 was getting those speeds too.

 

I've noticed that 4K QD32 seems to write at over 100 mb/s on a lot of systems, while I'm getting 4 mb/s. I don't care too much about benchmarks, but getting 1/20th the performance is worrying to me, even if it's only one part of the benchmark.