Question About Samsung 850 Evo 120GB VS 250GB

[estavick]

I am planning on getting either the 850 Evo 120GB or 250GB. So I checked the specs and I noticed the difference between two are: the 850 EVO 120GB has 4KB Random Read (QD32) - Max of 94,000 IOPS and a DRAM cache memory of 256MB as opposed to the 850 EVO 250GB version 4KB Random Read (QD32) - Max of 97,000 IOPS and a DRAM cache memory of 512MB (2x more than 120GB version). The questions is: how much faster is the Samsung 850 250GB version? Also, could anyone please elaborate what IOPS, 4KB random read, and DRAM cache memory are? Thanks in advance.

 

[mathard99]

my advice is to get the right size that best suits your needs. i don't think there will be much of a performance difference between higher and lower capacity ssd's. but if you are worried about performance, don't focus on the specs. focus on benchmark tests ran by actual pc users.

 

[rockie_]

http://anandtech.com/bench/product/1396?vs=1395

 

[USAFRet]

Faster? Yes. In the way that 132mph is faster than 130mph, on the perfect road, on a clear sunny day with no cops around. And when you are used to 53mph in your old Geo Metro.

Not something you'd actually notice in use.