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Seagate 600 SSD ST480HM000 480GB SSD Review (Page 5)

By Chris Ramseyer from May 7, 2013 @ 8:00 CDT
TweakTown Rating: 91%Manufacturer: Seagate

HD Tune Pro

Version and / or Patch Used: 4.00

Developer Homepage:

Product Homepage:

HD Tune is a Hard Disk utility which has the following functions:

Benchmark: measures the performance

Info: shows detailed information

Health: checks the health status by using SMART

Error Scan: scans the surface for errors

Temperature display

HD Tune Pro gives us accurate read, write and access time results and for the last couple of years has gained popularity amongst reviewers. It is now considered a must have application for storage device testing.


Our sequential performance tests start with the drive in fresh out of box state. This allows us to work the drive down to steady state at the same rate as the other SSD's we've previously reviewed. The 439.8MB/s average sequential read speed is very good in the 480GB capacity size. Some SSD controllers respond well large volumes of flash and others not so much.


Write performance consistency is important for all SSD's at any level. Inconsistent write performance is what led to early SSD's stuttering and the problem continues today. In this review, we know more about the Seagate 600 than we did when writing the 240GB model. Seagate used two 256MB Micron DDR2 chips to hold page data. In the 240GB review we knew something wasn't quite where it should be and the relatively small DRAM is why. We've seen SSD's with up to 1GB of DRAM and we've also seen DDR3 as well. DDR3 decreases power and increases performance in most cases.

HD Tach - Sequential Write Performance after Random Writes


Here we see why the DRAM is so important. With only 512MB, the sequential write performance after a small amount of random writes delivers inconsistent and low write performance. The Corsair Neutron GTX 480GB also uses 256MB of DRAM to cache page table data. I would really like to see a LAMD controller with 1GB to see where the performance sits.

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