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Samsung 840 Pro - low write performance issue

Discussion in 'Hardware Components and Aftermarket Upgrades' started by Cakefish, Aug 25, 2014.

Cakefish ¯\_(?)_/¯

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Read speeds are fine... but write speeds... not so much

Any idea why I'm not seeing full write speeds? It's not on battery or power savings mode either. I had better write speeds a month ago, so clearly something has changed since then but I'm not sure what that could be...

Drive info:

Cakefish, Aug 25, 2014

#1
n=1 YEAH SCIENCE!

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Do you have System Restore on? It really messes with the speeds...

n=1, Aug 25, 2014

#2
nipsen Notebook Ditty

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It's the write queue depth. Sustained writes croak whenever the memory controller isn't able to complete the internal maintenance in time. Sort of says in the descriptions, and most reviews will (..should) probably point that out.

Usually people aren't going to run into any issues with this outside benchmarks, though.. It's a million times..ok.. many times.. faster than a hdd anyway.. But yes, if you have something running in the background that writes a lot of data, that's going to kill the performance earlier than normal, of course.

nipsen, Aug 26, 2014

#3