Surface book 2 15 inch 256G super low wirte speed

Anonymous

My surface book 2 (15 inch, i7, 16G, 256G ssd) shows high read speed (~3000 mb/s), but super low write speed (~330 mb/s). I returned my 1st one due to this super low write speed, but 2nd one also show almost same benchmark speed. Based on other reviews, these numbers are consistently reported in 256G ssd model. I wonder if this write speed is normal or it can be improved by firmware update later. If this write speed is normal...why MS used this ssd?. 300mb/s write speed is much slower than my 2yr old surface pro 4 256G (~1000mb/s) and 3yr old 256G ssd(~800mb/s) in my desktop....

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Anonymous

2018-01-26T23:02:25+00:00

That options is not checked for both device. I just enabled it and did benchmark, but same writing speed.

BTW, what's you device? surface book 2? Is your SSD 256G? (or 512G, 1T)
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Anonymous

2018-01-26T22:57:44+00:00

These are the results I got in mine with the write-cache off:
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Anonymous

2018-01-26T22:38:57+00:00

Have you enabled "Turn off Windows write-cache buffer flushing" in the SSD policies?
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Anonymous

2018-01-26T22:09:13+00:00
My 256G SSD is samsung MZFLW256HEHP-000MV.

My surfpace pro 4 has a Toshiba 256G SDD. Below is today's result (show only sequential writing reult).
1. Surface book 2 256G : Read 2494.1 MB/s, Write 338.7 MB/s
2. Surface Pro 4 256G : Read 1616.3 MB/s, Write 942.2 MB/s
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Anonymous

2018-01-26T21:43:40+00:00

I used CrystalDiskMark 6.0.0
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