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Samsung 840 Pro 256GB SSD Review - Benchmarks - AIDA64 Random Access Time

Samsung 840 Pro 256GB SSD Review
In the enthusiast SSD market two products stand taller than the rest - the OCZ Vector and Samsung's 840 Pro. Today we're looking at the 256GB capacity size. Two drives enter, one drive leaves the champion.
By: | SSDs in Storage | Posted: Feb 14, 2013 7:56 am
TweakTown Rating: 94%Manufacturer: Samsung

AIDA64 Random Access Time

 

Version and / or Patch Used: 1.60

Developer Homepage: http://www.aida64.com

Product Homepage: http://www.aida64.com

 

 

AIDA64 offers several different benchmarks for testing and optimizing your system or network. The Random Access test is one of very few if not only that will measure hard drives random access times in hundredths of milliseconds as oppose to tens of milliseconds.

 

Drives with only one or two tests displayed in the write test mean that they have failed the test and their Maximum and possibly their Average Scores were very high after the cache fills. This usually happens only with controllers manufactured by Jmicron..

 

samsung_840_pro_256gb_ssd_review_55

 

The Samsung 840 Pro holds a steady .07ms line on our chart, the same as 840 and Vector.

 

samsung_840_pro_256gb_ssd_review_56

 

Even with a DRAM buffer for page data, the 840 Pro struggles to keep latency down through the entire run. This was our biggest complaint with the 128GB 840 Pro.

 

samsung_840_pro_256gb_ssd_review_99

 

Here we see the actual run in the test. For 71% of the test the drive is fine with a very low .07ms write latency. At 72% the latency spikes and hovers in the .15 to .2 range. The difference between the 256GB drive and the 128GB drive is the 71% that you can write to before the drive cleans itself up which adds latency to your activity.

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