The 1TB WD Blue SSD (WDS100T1B0A) Review

Page 6 : IO Meter (Random & Sequential) Benchmark Results

IO Meter

We compared the 1TB WD Blue SSD against the 240 GB HyperX Savage. If you wish to see how the WD Blue SSD compares to other solid state drives, take a look at our Solid State Drive Performance Comparison Guide, which we will be updating shortly.

 

Throughput (Random Access)

The 1TB WD Blue SSD - iometer random speed

Test 1 TB WD Blue SSD 240 GB HyperX Savage Difference
512 KB Read 239.84 MB/s 371.76 MB/s – 35.5%
512 KB Write 257.09 MB/s 488.15 MB/s – 47.3%
4 KB Read 24.93 MB/s 27.57 MB/s – 9.6%
4 KB Write 53.31 MB/s 53.52 MB/s

The small random reads and writes are the most important tests for applications that make a lot of random accesses, so these would be key performance indicators for SSDs that are often used as boot drives.

The 1TB WD Blue SSD held up well in small reads and writes, matching the 240 GB HyperX Savage SSD in writes, and coming in just 10% slower in reads. The large SDRAM cache seems to be doing its job very well.

However, it was much slower when it came to large reads and writes. This is due to the TLC the Phison S10 controller used in the HyperX Savage has twice the NAND channels of the WD Blue’s Marvell 88SS1074 controller.

 

Random Access Time

The 1TB WD Blue SSD - iometer random access

Test 1 TB WD Blue SSD 240 GB HyperX Savage Difference
512 KB Read 2.19 ms 1.41 ms – 35.6%
512 KB Write 2.04 ms 1.07 ms – 47.5%
4 KB Read 0.17 ms 0.15 ms – 11.8%
4 KB Write 0.08 ms 0.08 ms

The small random write access time of the 1TB WD Blue SSD was completely masked by the large SDRAM cache, allowing it to match the performance of the 240 GB HyperX Savage SSD. The small random read access time was also very good, coming within 12% of the HyperX Savage. However, due to the lack of NAND channels, its large access times were almost twice as long.

 

Random CPU Utilization

The 1TB WD Blue SSD - iometer random CPU

Test 1 TB WD Blue SSD 240 GB HyperX Savage Difference
512 KB Read 7.16 % 1.62 % + 342.0%
512 KB Write 7.31 % 1.81 % + 303.9%
4 KB Read 9.94 % 4.27 % + 132.8%
4 KB Write 11.91 % 8.97 % + 32.8%

For some reason, the 1TB WD Blue SSD took up considerably more CPU time than the HyperX Savage SSD.

 

IO Meter (Sequential Accesses)

We compared the 1TB WD Blue SSD against the 240 GB HyperX SavageIf you wish to see how the WD Blue SSD compares to other solid state drives, take a look at our Solid State Drive Performance Comparison Guide, which we will be updating shortly.

 

Sequential Throughput

The 1TB WD Blue SSD - iometer sequential speed

Test 1 TB WD Blue SSD 240 GB HyperX Savage Difference
512 KB Read 250.14 MB/s 521.02 MB/s – 52.0%
512 KB Write 255.54 MB/s 486.12 MB/s – 47.4%
4 KB Read 63.35 MB/s 24.89 MB/s + 154.5%
4 KB Write 59.15 MB/s 53.65 MB/s + 10.3%

The sequential read and write performance indicators determine how fast you can copy and move files. This is also important in determining how fast you can launch an application or game.

The 1TB WD Blue SSD did very well when the sequential reads and writes were small. It was particular good at small sequential reads. However, when it came to large sequential accesses, the WD Blue’s limited NAND channels came into play… giving it half the throughput of the HyperX Savage SSD.

 

Sequential Access Time

The 1TB WD Blue SSD - iometer sequential access

Test 1 TB WD Blue SSD 240 GB HyperX Savage Difference
512 KB Read 2.10 ms 1.01 ms – 51.9%
512 KB Write 2.05 ms 1.08 ms – 47.3%
4 KB Read 0.07 ms 0.16 ms + 128.6%
4 KB Write 0.07 ms 0.08 ms + 14.3%

 

Sequential CPU Utilization

The 1TB WD Blue SSD - iometer sequential CPU

Test 1 TB WD Blue SSD 240 GB HyperX Savage Difference
512 KB Read 8.69 % 1.74 % + 399.4%
512 KB Write 5.76 % 2.17 % + 165.4%
4 KB Read 15.93 % 3.71 % + 329.4%
4 KB Write 15.42 % 9.34 % + 65.1%

Again, the 1TB WD Blue SSD required a lot more CPU time than the HyperX Savage SSD.

Next Page > IOPS Scaling (Random) Results

 

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