Since the introduction of their first consumer TLC SSD with the SSD 840, Samsung's consumer/retail SATA SSD lineup has consisted of two hàng hóa families: the MLC-based Pro drives, và the TLC-based 840 và EVO drives. The strength of Samsung's SSD controllers & the advantages of 3 chiều NAND have allowed the 850 EVO to maintain a solidly mid-range position in the SSD market well above any other drive using TLC NAND.
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Meanwhile, with the strength of the 850 EVO as a near-midrange hàng hóa - & with pricing to match - like so many other vendors over the last year, Samsung has also been developing a true low cost TLC drive for the mass market. The end result is the Samsung 750 EVO, which we're revieiwng today. The 750 EVO establishes a new budget-oriented hàng hóa line that competes in the cutthroat low end of the market where price per GB is the most important aspect of the product.
There are several design choices that help minimize the cost of the 750 EVO, aside from the obvious choice of TLC over MLC. The MGX controller it borrows from the lower capacity 850 EVOs is a dual-core version of Samsung's usual triple-core architecture. Similarly, the 750 EVO is only available in 120GB và 250GB sizes, so there is no high-priced high capacity model. Consequently, with only two small capacities, the 750 EVO line is served by a single tiny PCB layout, made even smaller by the fact that Samsung has put the 256MB of DRAM in the same package as the SSD controller.
But the most significant aspect of the 750 EVO is that it doesn't use the 3 chiều NAND that has been a key competitive advantage for Samsung's 850 sản phẩm lines. Samsung has continued development of planar NAND even after transitioning their retail SSDs to 3d NAND, & the 750 EVO in turn uses 16nm planar TLC. It doesn't offer the same performance or endurance of Samsung's 3d NAND, but it does significantly lower the cost of the drive.
The 16nm TLC NAND is the successor to Samsung's 19nm TLC that had a troubled tenure in the 840 EVO. With the 840 EVO, data at rest on the drive degraded over time and eventually required the use of more thorough & thus slower error correction when read back. As a result the 750 EVO inherits the benefits of all the firmware work Samsung did to lớn mitigate the read speed degradation. This, for what it's worth, gives Samsung some degree of a leg-up against other 16/15nm TLC drives that face the same challenges.
| Samsung TLC SATA SSD Comparison | ||||
| Drive | 750 EVO 120GB | 750 EVO 250GB | 850 EVO 120GB | 850 EVO 250GB |
| Controller | MGX | MGX | ||
| NAND | Samsung 128Gb 16nm TLC | Samsung 32-layer 128Gbit TLC V-NAND | ||
| DRAM | 256MB | 256MB | 256MB | 512MB |
| Sequential Read | 540MB/s | 540MB/s | 540MB/s | 540MB/s |
| Sequential Write | 520MB/s | 520MB/s | 520MB/s | 520MB/s |
| 4KB Random Read | 94K IOPS | 97K IOPS | 94K IOPS | 97K IOPS |
| 4KB Random Write | 88K IOPS | 88K IOPS | 88K IOPS | 88K IOPS |
| 4KB Random Read QD1 | 10K IOPS | 10K IOPS | 10K IOPS | 10K IOPS |
| 4KB Random Write QD1 | 35K IOPS | 35K IOPS | 40K IOPS | 40K IOPS |
| DevSleep Power | 6mW | 2mW | ||
| Slumber Power | 50mW | 50mW | ||
| Active power nguồn (Read/Write) | 2.1W / 2.4W (Average) | 2.4W / 2.8W (Average) | Max 3.7W / 4.4W | |
| Encryption | AES-256, TCG Opal 2.0, IEEE-1667 (eDrive) | AES-256, TCG Opal 2.0, IEEE-1667 (eDrive) | ||
| Endurance | 35TB | 70TB | 75TB | |
| Warranty | Three years | Five years |
By and large the performance specifications for the 750 EVO match the lower capacity 850 EVO, though a slightly lower random write tốc độ at a queue depth of one hints that the 750 EVO may require a bit more background wear leveling work. The feature phối is identical khổng lồ the 850 EVO, making the 750 EVO one of the few low-end drives to tư vấn TCG Opal encryption.
Samsung's marketing strategy for the 750 EVO is a little different from their previous retail SSD products. The 750 EVO is targeted specifically at system integrators and system builders, rather than at users looking to upgrade an existing machine. Consequently, they aren't pushing lớn make the 750 EVO available from as wide a range of retail outlets. Enough of the major online retailers have it in stock that it is not difficult khổng lồ obtain.
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This nhận xét will focus on comparing the 750 EVO against Samsung's other SATA SSDs and against other current-generation low-end TLC SSDs of comparable capacity. Our Bench tool can assist in making other comparisons.
Performance Consistency Introduction, The Drive & The demo Performance Consistency 91neg.com Storage Bench - The Destroyer 91neg.com Storage Bench - Heavy 91neg.com Storage Bench - Light Random Performance Sequential Performance Mixed Read/Write Performance ATTO, AS-SSD và Idle power Consumption Final Words