OCZARC100-25SAT3-120G
SamsungMZ-7PD128BW

Controller: Indilinx Barefoot 3. Flash Memory: Toshiba A19nm MLC.

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC.

Real World Speed
Performance profile from 13,324 user samples
1,703 User Benchmarks
Best Bench: 94% 45GB free
Worst Bench: 58% 1GB free
Poor: 58% Great: 94%
SPEED RANK: 242nd / 862
11,621 User Benchmarks
Best Bench: 99% 118GB free
Worst Bench: 54% 13GB free
Poor: 54% Great: 99%
SPEED RANK: 228th / 862
Effective Speed
Effective SSD Speed
76.6 % -2% 78 % +2%
Read
Avg. Sequential Read Speed
433 MB/s -12% 483 MB/s Slightly faster read speed.
+12%
Write
Avg. Sequential Write Speed
357 MB/s Faster write speed.
+19%
301 MB/s -19%
4K Read
Avg. 4K Random Read Speed
22.9 MB/s -25% 28.7 MB/s Faster random read.
+25%
4K Write
Avg. 4K Random Write Speed
81.4 MB/s Slightly faster random write.
+7%
76.4 MB/s -7%
Mixed
Avg. Sequential Mixed IO Speed
381 MB/s Faster mixed IO speed.
+17%
326 MB/s -17%
4K Mixed
Avg. 4K Random Mixed IO Speed
17.1 MB/s -18% 20.1 MB/s Faster random mixed IO.
+18%
Read
Peak Sequential Read Speed
459 MB/s -14% 522 MB/s Slightly faster peak read speed.
+14%
Write
Peak Sequential Write Speed
382 MB/s -15% 438 MB/s Slightly faster peak write speed.
+15%
4K Read
Peak 4K Random Read Speed
28.5 MB/s -26% 35.8 MB/s Faster peak random read.
+26%
4K Write
Peak 4K Random Write Speed
123 MB/s Slightly faster peak random write.
+7%
115 MB/s -7%
Mixed
Peak Sequential Mixed IO Speed
411 MB/s -16% 475 MB/s Faster peak mixed IO speed.
+16%
4K Mixed
Peak 4K Random Mixed IO Speed
23.7 MB/s -6% 25.1 MB/s Slightly faster peak random mixed IO.
+6%
Market Share
Based on 4,418,747 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.08 % -337% 0.35 % Hugely higher market share.
+337%
Value
Value For Money
49 % Much better value.
+54%
31.9 % -54%
User Rating
UBM User Rating
62 % -2% 63 % +2%
Price
Price (score)
$82 Much cheaper.
+48%
$160 -48%
Age
Newest
39 Months Much more recent.
+36%
61 Months -36%
DQ Read
Peak 4K-64Thread Read Speed
305 MB/s -19% 363 MB/s Faster peak deep queue read.
+19%
DQ Write
Peak 4K-64Thread Write Speed
343 MB/s Slightly faster peak deep queue write.
+10%
311 MB/s -10%
AS-SSD Total
AS-SSD Total Score
1,084 Pts -7% 1160 Pts Slightly stronger server IO.
+7%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
72.9 MB/s -7% 78 MB/s Slightly faster peak deep queue mixed IO.
+7%
ADQ Read
Avg. 4K-64Thread Read Speed
164 MB/s -16% 190 MB/s Faster deep queue read.
+16%
ADQ Write
Avg. 4K-64Thread Write Speed
210 MB/s Faster deep queue write.
+21%
173 MB/s -21%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
42.4 MB/s -6% 45 MB/s Slightly faster deep queue mixed IO.
+6%
Capacity
Capacity
120GB 128GB
ADVERTISEMENT

The 128GB 840 Pro is a rock solid performer. On release, nearly a year and a half ago, the Pro smashed several speed records. Today, with sequential read/write speeds of 519/438 MBps, the Pro is still one of the fastest SSDs available. One of the Pro's top competitors is Samsungs own, newer 840 Evo. Looking at a raw synthetic speed comparison of the 128GB Pro and Evo is a little misleading. On the face of it the Pro only has a marginal lead over the Evo. This due to the fact that the Evo can only maintain its burst write speed for transfers of up to 3GB, the size of its SLC cache. The Pro on the other hand can sustain higher throughputs indefinitely. The Pro also utilizes MLC which is rated for far more erase cycles than the TLC used in the Evo. Server IO is often continuous and would quickly exhaust the 3GB cache on the Evo but for typical consumer use the Evo will remain within the SLC cache most of the time. [Feb '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) November 2017 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 userbenchmark.com.
  • - 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.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-7700K $288Nvidia GTX 1070 $410Samsung 850 Evo 250GB $95
AMD Ryzen 7 1700 $285AMD RX 480 $240Samsung 850 Pro 256GB $110
Intel Core i5-7600K $200Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $154
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $170SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $1,050SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $55Corsair Vengeance LPX DDR4 3200 C16 2x8GB $200SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback