Iometer - Maximum IOPS
Version and / or Patch Used: Iometer 2014
We use Iometer to measure high queue depth performance. (Secondary Volume, No Partition)
Max IOPS Read 8-Workers (FOB) QD 256 8GB LBA
Max IOPS Write 8-Workers (FOB) QD 256 8GB LBA
We run this test at QD256, which is a queue depth that a consumer SSD will never see. We do this just to see what the maximum attainable IOPS from our configuration actually is. Our dual 400GB 750 array is able to attain more read/write IOPS than the 950 Pro arrays.
Iometer - Disk Response
Version and / or Patch Used: Iometer 2014
We use Iometer to measure disk response times. Disk response times are measured at an industry accepted standard of 4K QD1 for both write and read. Each test runs twice for 30 seconds consecutively, with a 5-second ramp-up before each test. We partition the drive/array as a secondary device for this testing.
Avg. Write Response
Avg. Read Response
This is exactly what we saw from our synthetic testing. A single 750 has better QD1 read performance than an array. This is common to all arrays we've tested over the years. Write response is another matter though (when write-back caching is enabled). A dual 750 array delivers 25% lower latency than a single 750.
DiskBench - Directory Copy
Version and / or Patch Used: 188.8.131.52
We use DiskBench to time a 28.6GB block (9,882 files in 1,247 folders) composed primarily of incompressible sequential and random data as it's transferred from our DC P3700 PCIe NVME SSD to our test drive. We then read from a 6GB zip file that's part of our 28.6GB data block to determine the test drives read transfer rate. Our system is restarted prior to the read test to clear any cached data, ensuring an accurate test result.
We only tested single drive transfer rates because we aren't sure that we have anything fast enough to feed our arrays. In a single drive setting, Intel's 1.2 TB 750 delivers the best transfer rates.
PRICING: You can find the Intel 750 NVMe 400GB U.2 SSD for sale below. The prices listed are valid at the time of writing, but can change at any time. Click the link below to see real-time pricing for the best deal:
United States: The Intel 750 NVMe 400GB U.2 SSD retails for $420 at Amazon.
United Kingdom: The Intel 750 NVMe 400GB U.2 SSD retails for £302 at Amazon UK.
- Page 1 [Introduction, Drive Specifications]
- Page 2 [Drive Details]
- Page 3 [Test System Setup and Drive Properties]
- Page 4 [Synthetic Benchmarks - ATTO & Anvil Storage Utilities]
- Page 5 [Synthetic Benchmarks - CrystalDiskMark & AS SSD]
- Page 6 [Benchmarks (Trace-Based OS Volume) - PCMark Vantage, PCMark 7 & PCMark 8]
- Page 7 [Benchmarks (Secondary) - Max IOPS, Response & Transfer Rates]
- Page 8 [Benchmarks (Secondary Volume) - PCMark 8 Extended]
- Page 9 [Benchmarks (Secondary Volume) – 70/30 Mixed Workload]
- Page 10 [Maxed-Out Performance (MOP)]
- Page 11 [Final Thoughts]
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