Mixed Read / Write Workloads
In this series of tests, we measure mixed workload performance. We start with 100% read and then add data writes to the mix until we get to 100% writes, in 10% increments. We believe this will be the next major area SSD manufactures will address after performance consistency.
Sequential Mixed Workload Bandwidth
All SSDs lose performance with a mixed workload. SATA is half-duplex so the drive has to receive all of the commands and use native command queuing to prioritize the requests. Looking at the test through a LeCroy Teledyne Sierra M6 analyzer we can see how the drives tend to work the read load first and then handle the write requests.
The 850 Pro 512GB has some trouble early on when a small amount of write requests are added to the mix, but quickly regains performance as more writes are introduced.
80% Read / 20% Sequential Write Bandwidth
For consumers, the 80% read and 20% write mix is a good place to measure. The 850 Pro isn't the best at this mix, but it's certainly not bad either.
Random Mixed IO 50/50 Workload
The random 50/50 mix is a new test we're introducing in this review. At this time we only have a few new SSDs tested in this capacity size but as we finalized the test we'll go back and retest all of the market leaders.
The Samsung 850 Pro shows a significant lead compared to the other 512GB capacity class drives in the chart. Surprisingly, the 850 Pro even increases performance at QD64 over QD32. This shows the drive is able to effectively execute high command requests.
PRICING: You can find products similar to this one for sale below.
United States: Find other tech and computer products like this over at Amazon's website.
United Kingdom: Find other tech and computer products like this over at Amazon UK's website.
Canada: Find other tech and computer products like this over at Amazon Canada's website.
- Page 1 [Introduction & Specifications, Pricing and Availability]
- Page 2 [Samsung 850 Pro 512GB SSD]
- Page 3 [Samsung Software Package]
- Page 4 [Test System Setup and ATTO Baseline Performance]
- Page 5 [Benchmarks - Sequential Performance]
- Page 6 [Benchmarks - Anvil Storage Utilities]
- Page 7 [Benchmarks - Mixed Read / Write Workloads]
- Page 8 [PCMark 8 Consistency Test]
- Page 9 [PCMark 8 Consistency Test - Continued]
- Page 10 [Benchmarks - Power Testing]
- Page 11 [Final Thoughts]
Recommended for You
- We at TweakTown openly invite the companies who provide us with review samples / who are mentioned or discussed to express their opinion of our content. If any company representative wishes to respond, we will publish the response here.
Latest News Posts
- Musk shows capabilities of the new self-driving hardware
- Landing on Mars didn't go as planned
- Xiaomi sells a million phones in India in 18 days
- Razer Blade Pro laptop rocks GTX 1080, 4K G-Sync display
- Nintendo Switch may sport dedicated game video recording
- EVGA DG-87 Full-Tower Gaming Chassis Review
- New PC - no display on a screen, 3 beeps
- windows usb install file
- GIGABYTE P55W v6 Gaming Notebook Review
- How do i contact the moderators?
- Razer unveils new Razer Blade Pro gaming notebook
- Nintendo Switch world premiere demonstrates new entertainment experiences from a home gaming system
- PowerColor starts selling the DEVIL Box external graphics solution
- ESL to power PlayStation 4 competitive gaming
- Samsung rolls out industry's first 8GB LPDDR4 DRAM package