| Samsung 990 EVO Plus SSD Specifications | |
| Form Factor | M.2 (2280) |
| Interface | PCIe 4.0 x4 / 5.0 x2 NVMe 2.0 |
| Capacity Options | 1TB, 2TB, 4TB |
| Sequential Read Speed | Up to 7,250 MB/s |
| Sequential Write Speed | Up to 6,300 MB/s |
| Random Read Speed (4KB, QD32) | 1TB: Up to 850,000 IOPS 2TB: Up to 1,000,000 IOPS 4TB: Up to 1,050,000 IOPS |
| Random Write Speed (4KB, QD32) | 1TB: Up to 1,350,000 IOPS 2TB: Up to 1,350,000 IOPS 4TB: Up to 1,400,000 IOPS |
| Power Consumption (Active) | 1TB: 4.3W (Read), 4.2W (Write) 2TB: 4.6W (Read), 4.2W (Write) 4TB: 5.5W (Read), 4.8W (Write) |
| Power Consumption (Idle) | Typical 60 mW |
| Power Consumption (Sleep) | Typical 5 mW |
| Operating Temperature | 0 – 70°C |
| Shock Resistance | 1,500 G & 0.5 ms (Half sine) |
| Storage Memory | Samsung V-NAND TLC |
| Controller | Samsung In-House Controller (5nm) |
| Cache Memory | Host Memory Buffer (HMB) |
| Encryption | AES 256-bit Encryption (Class 0), TCG/Opal, IEEE 1667 |
| Reliability (MTBF) | 1.5 Million Hours |
| Warranty | 5-year Limited Warranty 1TB: 600 TBW 2TB: 1,200 TBW 4TB: 2,400 TBW |
Samsung 990 EVO Plus Performance
We will compare the Samsung 990 EVO Plus against a few other recent consumer SSDs in our performance benchmarks.
For testing, we use two platforms. The consumer test platform supports PCIe Gen4/Gen5 SSDs and runs Windows 11. It is leveraged for lighter consumer-based tests such as BlackMagic DiskSpeed Test, CrystalDiskMark, and our primary platform, a Dell PowerEdge R760, which overlaps our enterprise tests. Serial Cables supplied an 8-bay PCIe Gen5 JBOF for testing for U.2/U.3, M.2, and E1.S/E3.S drives. This allows us to test all current and emerging drive types on the same test hardware. With the lack of onboard DRAM with the Samsung 990 EVO Plus, our enterprise platform used for vdbench tests will generally see slower performance than the drive inside our consumer platform running Windows 11.
Dell PowerEdge R760 Configuration
- Dual Intel Xeon Gold 6430 (32 cores/64 threads, 1.9GHz base)
- 1TB DDR5 RAM
- Ubuntu 22.04
VDBench Workload Analysis
The VDBench Workload Analysis tests are a set of synthetic workloads that help provide baseline, repeatable conditions across multiple drives. These tests fill the drive surface with data and then partition a drive section equal to one percent of the drive capacity to simulate how the drive may respond to application workloads. This differs from full entropy tests, which utilize 100% of the drive and take it to a steady state.
We will look at seven different tests, including:
- 4K Random Read: 100% Read, 128 threads, 0-120% iorate
- 4K Random Write: 100% Write, 64 threads, 0-120% iorate
- 64K Sequential Read: 100% Read, 16 threads, 0-120% iorate
- 64K Sequential Write: 100% Write, 8 threads, 0-120% iorate
- VDI Boot
- VDI Initial Login
- VDI Monday Login
Starting with the Random Read 4K test, the Samsung 990 EVO Plus peaked at 266K IOPS with 480ms latency, outperforming the EVO and WD Blue SN580 drives. However, it still lagged well behind the higher-end Samsung 990 Pro and Crucial T500.
In the Random Write 4K test, we saw erratic behavior across most drives except the 990 Pro. The EVO Plus managed 37K IOPS at 232.2ms, which, while better than the EVO and WD Blue, still wasn’t stellar.
The EVO Plus struggled for the Sequential Read 64K test, falling behind the rest of the drives. It reached only 1.56GB/s at 1,277.3ms, while even the non-plus 990 EVO doubled that speed with 3.22GB/s.
In the Sequential Write 64K test, the Samsung 990 EVO Plus performed better. It peaked at 586MB/s with a latency of 1,664.2ms, a noticeable improvement over its predecessor.
In the VDI Boot test, the Samsung 990 EVO Plus topped 42K IOPS with a latency of 829ms, outperforming the regular 990 EVO, which maxed out around 35K IOPS at 922ms and finished with over 1,000ms latency. As expected, the Crucial T500 and 990 Pro were significantly ahead in this category.
Regarding the VDI Initial Login, things got a bit more unpredictable. The 990 EVO Plus hit 18K IOPS at 414ms but faced a big spike at the end. This erratic performance also occurred with the non-plus 990 EVO, which peaked at 16K IOPS with 1,892ms latency and experienced a late spike before the test wrapped up.
For the VDI Monday Login, the Samsung 990 EVO Plus did quite well for its price range, hitting 16K IOPS with 978.5ms latency. This was a clear improvement from the non-plus 990 EVO, which only reached 11K IOPS at 1,450ms latency.
BootBench
BOOT-BENCH-1 is an OCP workload profile designed to test SSDs for server boot duty. While this role is typically for enterprise SSDs, client SSDs are often chosen for their balance of performance, capacity, and cost. This is particularly relevant for hyperscalers and system providers facing similar challenges.
Before running a read-heavy workload, the boot test fills the entire drive with writes. It involves a 32K random read async operation, a 15MiB/s synchronous 128K random write, and a 5MiB/s synchronous 128K random write/trim in the background. Starting at four jobs, it scales up to 256 during peak read operations.
Unfortunately, like the standard version of the 990 EVO, the Samsung 990 EVO Plus failed the bootbench.
| SSD | Read IOPS |
| Sk hynix Platinum P41 | 220,884 IOPS |
| WD SN850X | 219,883 IOPS |
| Solidigm P44 Pro | 211,999 IOPS |
| Fantom VENOM8 | 190,573 IOPS |
| Samsung 990 Pro | 176,677 IOPS |
| Sabrent Rocket 4 Plus | 162,230 IOPS |
| ADATA Legend 970 (Gen5) | 65,632 IOPS |
| Corsair MP700 Pro (Gen5) | 51,521 IOPS |
| Predator Storage GM7 | 35,302 IOPS |
| Samsung 990 EVO Plus | DNF |
| Samsung 990 EVO | DNF |
CrystalDiskMark Speed Test
CrystalDiskMark is a popular drive benchmark. We tested the Samsung 990 EVO Plus inside our consumer test platform running Windows 11, using five passes with a 32GB sample file. Here, it was able to hit 7.14GB/s read and 5.76GB/s write.
This is a noticeable bump in speed over the standard Samsung 990 EVO model, which reached 5.01GB/s read and 3.75GB/s write in our review.
Blackmagic DiskSpeed Test
Lastly, we tested performance within a Windows 11 environment using the popular Blackmagic tool. The Samsung 990 EVO Plus achieved 5.47GB/s read and 4.88GB/s write speeds. This represents a solid improvement over the non-plus version, which managed only 4.26GB/s read and 3.44GB/s write, marking a 28% increase in read speed and a 42% boost in write performance.
While these gains are impressive, they fall short of Samsung’s claims. The 990 EVO Plus is specced to deliver up to 7,250MB/s read speeds for the 2TB and 4TB models—a 45% improvement over the 990 EVO’s 5GB/s. Similarly, the Plus version promises write speeds of up to 6,300MB/s, a 50% increase over the 990 EVO’s 4,200MB/s. While the real-world performance doesn’t quite reach these numbers, the upgrade still offers faster load times and smoother handling of large files.
Conclusion
Sandy Yang/Global Strategy Director
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Email: yangyd@qianxingdata.com
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