Controller: Toshiba TC58NC5HA9GST. NAND Memory: Toshiba Asynchronous 19mn MLC


Controller: LAMD LM87800. Flash Memory: Toshiba 19nm MLC.

Real World Speed
Performance profile from 892 user samples
361 User Benchmarks
Best Bench: 106% 189GB free
Worst Bench: 50% 53GB free
Worst: 50% Best: 106%
SPEED RANK: 140th / 805
531 User Benchmarks
Best Bench: 99% 202GB free
Worst Bench: 57% 150GB free
Worst: 57% Best: 99%
SPEED RANK: 172nd / 805
Effective Speed
Effective SSD Speed
81.5 % +2% 79.6 % -2%
Avg. Sequential Read Speed
479 MB/s +2% 471 MB/s -2%
Avg. Sequential Write Speed
383 MB/s +3% 373 MB/s -3%
4K Read
Avg. 4K Random Read Speed
20 MB/s -12% 22.4 MB/s Slightly faster random read.
4K Write
Avg. 4K Random Write Speed
63.3 MB/s -6% 67.2 MB/s Slightly faster random write.
Avg. Sequential Mixed IO Speed
418 MB/s +4% 401 MB/s -4%
4K Mixed
Avg. 4K Random Mixed IO Speed
28.1 MB/s Faster random mixed IO.
22.9 MB/s -23%
Peak Sequential Read Speed
515 MB/s +1% 511 MB/s -1%
Peak Sequential Write Speed
485 MB/s Slightly faster peak write speed.
446 MB/s -9%
4K Read
Peak 4K Random Read Speed
26.1 MB/s -11% 28.9 MB/s Slightly faster peak random read.
4K Write
Peak 4K Random Write Speed
102 MB/s -1% 103 MB/s +1%
Peak Sequential Mixed IO Speed
504 MB/s Slightly faster peak mixed IO speed.
474 MB/s -6%
4K Mixed
Peak 4K Random Mixed IO Speed
43.7 MB/s Much faster peak random mixed IO.
32.5 MB/s -34%
Market Share
Based on 1,392,683 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.1 % 0% 0.1 % 0%
Value For Money
43.4 % +4% 41.8 % -4%
User Rating
UBM User Rating
54 % -9% 59 % Slightly more popular.
Price (score)
$225 -4% $215 +4%
41 Months 0% 41 Months 0%
DQ Read
Peak 4K-64Thread Read Speed
356 MB/s +3% 346 MB/s -3%
DQ Write
Peak 4K-64Thread Write Speed
319 MB/s -0% 320 MB/s +0%
AS-SSD Total
AS-SSD Total Score
1,131 Pts +1% 1,118 Pts -1%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
209 MB/s Hugely faster peak deep queue mixed IO.
86.1 MB/s -143%
ADQ Read
Avg. 4K-64Thread Read Speed
182 MB/s Slightly faster deep queue read.
172 MB/s -6%
ADQ Write
Avg. 4K-64Thread Write Speed
180 MB/s -9% 197 MB/s Slightly faster deep queue write.
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
91.9 MB/s Much faster deep queue mixed IO.
54.9 MB/s -67%
256GB 240GB

The Toshiba HG5d is a reasonable SSD. Considering that Toshiba is amongst the few manufacturers that produce both their own NAND flash and SSD controllers, the HG5d is a little disappointing. With a Real World Speed of 444 MBps the Q Series lies just above the 50th percentile. Relative performance is better for server orientated workloads where the HG5d scored an AS SSD Total score of 970 points putting it in 11th position and at the 66th percentile, additionally the HG5d demonstrated very strong mixed 4K transfer rates peaking at 51.1 MB/s, the second highest seen to date on a 256GB SSD. The Toshiba HG5d is not a bad SSD but neither is it cutting edge which given it's relative youth counts strongly against it. Overall there are both faster and cheaper deals to be had elsewhere. [Sep '13 SSDrivePro]


This is Seagate's third foray into the the SSD market and it's clear from the specifications that Seagate haven't taken any chances. The 600 incorporates the now reasonably established LAMD LM87800 controller coupled with 19 NM Toshiba MLC, a very similar combination to Corsair's Neutron GTX. This combination of hardware coupled with Seagate's custom firmware produces a very solid set of performance figures. With a Real World Performance rating of 531 MB/s and an AS SSD total score of 1131 the Seagate 600 demonstrates both superb server and consumer performance capabilities. The pricing on the 600 is currently around average for a group leading SSD and likely to drop with time as the 600 is still relatively recent. Overall the 240GB Seagate 600 represents good value for money and delivers great performance. [Aug '13 SSDrivePro]


Solid State Drive Rankings (Price vs Performance) October 2016 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

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Intel Core i7-6700K $318Nvidia GTX 970 $235Samsung 850 Evo 250GB $95
Intel Core i5-6600K $210AMD RX 480 $220Samsung 850 Pro 256GB $120
Intel Core i7-4790K $310Nvidia GTX 1070 $390Samsung 850 Evo 500GB $150
WD Black 1TB (2013) $69Corsair Vengeance LPX DDR4 3000 C15 2x8GB $92SanDisk Extreme 64GB $30
Seagate Barracuda 7200.14 1TB $50G.SKILL Trident Z DDR4 3200 C14 4x16GB $484SanDisk Extreme 32GB $22
WD Black 2TB (2013) $115HyperX Fury DDR4 2133 C14 2x8GB $86SanDisk Extreme 16GB $16
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