Tech content trusted by users in North America and around the world
7,222 Reviews & Articles | 52,181 News Posts

ADATA SP550 SATA III (120GB, 240GB & 480GB) SSD Review

By: Jon Coulter | SSDs in Storage | Posted: Nov 12, 2015 3:07 pm
TweakTown Rating: 71%Manufacturer: ADATA

70/30 Mixed Workload Test (Sledgehammer)

 

Version and / or Patch Used: Iometer 2014

 

Heavy Workload Model

 

This test hammers a drive so hard we've dubbed it "Sledgehammer". Our 70/30 Mixed Workload test is designed to simulate a heavy-duty enthusiast/workstation steady-state environment. We feel that a mix of 70% read/30% write, full random 4K transfers best represents this type of user environment. Our test allows us to see the drive enter into and reach a steady state as the test progresses.

 

Phase one of the test preconditions the drive for 1 hour with 128K sequential writes. Phase two of the test runs a 70% read/30% write, full random 4K transfer workload on the drive for 1 hour. We log and chart (phase two) IOPS data at 5-second intervals for 1 hour (720 data points). 60 data points = 5 minutes.

 

adata-sp550-sata-iii-120gb-240gb-480gb-ssd-review_49

 

 

What we like about this test is that it reflects reality. Everything lines up, as it should. Consumer drives don't outperform Enterprise-Class SSD's that were designed for enterprise workloads. Consumer drives based on old technology are not outperforming modern Performance-Class SSD's, etc.

 

The drives in our test pool, especially the 480GB SP550 are all over the place. It's almost impossible to read this chart because of the performance variability of the SP550, so I have listed the average IOPS for each drive. The SMI reference design shreds this test, delivering performance that is right up there with the best MLC-based consumer-class SSDs.

 

Looking at the SP550, the 240GB model and the 480GB model are closely matched. However, the 240GB SP550 has much less performance variability than the 480GB model making it the superior performer of the two.

    We at TweakTown openly invite the companies who provide us with review samples / who are mentioned or discussed to express their opinion of our content. If any company representative wishes to respond, we will publish the response here.

Related Tags

Got an opinion on this content? Post a comment below!
loading