MyDigitalSSD BPX Pro 240GB SSD — In-Depth Review & Specs
The MyDigitalSSD BPX Pro 240GB is the entry-level capacity in MyDigitalSSD's flagship Phison E12 line. Despite its modest 240GB footprint, it carries the same 8-channel Phison PS5012-E12 controller and dedicated DRAM cache as its larger siblings. The smaller capacity does constrain sequential write throughput — 1,100 MB/s versus the 3,100 MB/s of the 960GB model — but the 3,400 MB/s read speed and full DRAM-equipped latency profile remain intact. This review examines what the 240GB BPX Pro offers as an OS-only NVMe drive and where the capacity-limited write performance matters in practice.
The Phison PS5012-E12 is a high-end PCIe 3.0 x4 controller with eight NAND channels and a dedicated DRAM interface. It belongs to the same generation of controllers that powered flagship drives like the Corsair MP510, Sabrent Rocket, and Silicon Power P34A80 — all built on the proven E12 reference design. At the 240GB capacity, the E12's eight channels are populated but with fewer NAND dies per channel than higher capacities, which limits interleaving and caps sequential write throughput at 1,100 MB/s. Read speed is unaffected — the drive still delivers the full 3,400 MB/s that the E12 platform is known for, because reads are less dependent on die-level parallelism.
MyDigitalSSD pairs the E12 with Toshiba BiCS3 64-layer 3D TLC NAND and SK Hynix DDR3 or DDR4 DRAM for the flash translation layer. The DRAM cache ensures consistent mixed-workload latency — unlike DRAM-less HMB designs, the BPX Pro maintains low and stable latency regardless of host system memory load. This matters for an OS drive where background tasks, updates, and user activity create random mixed read/write patterns throughout the day.
The drive carries a 380 TBW endurance rating and a 5-year limited warranty — solid for a 240GB class drive in the value segment. A single-sided M.2 2280 form factor guarantees compatibility with desktops, laptops, and Ultrabook-class systems. The E12 controller includes LDPC error correction, end-to-end data path protection, and thermal throttling, though the 240GB model's modest power draw means the controller rarely if ever reaches throttle temperature under real-world use.
✅ Storage Comparisons:
🚀 Performance and benchmarks
Rated sequential throughput is 3,400 MB/s read and 1,100 MB/s write. The read speed is full-fat E12 — among the fastest PCIe 3.0 x4 reads available — and means Windows boots, application launches, and game level loads complete as fast as any Gen3 NVMe drive regardless of capacity. The write speed is where the 240GB capacity constrains things: with only one or two NAND dies per channel, sequential writes top out at roughly one-third of what the same controller delivers at 960GB.
MyDigitalSSD BPX Pro 256 GB vs M.2 3.0 x 4 peers
Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 3.0 x 4 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.
- ADATA SX 8800 Pro 512 GB: 3,500 MB/s read, 2,700 MB/s write
- ADATA SX 8800 Pro 1 TB: 3,500 MB/s read, 2,700 MB/s write
- ADATA XPG Spectrix S40G RGB 256 GB: 3,500 MB/s read, 3,000 MB/s write
- ADATA XPG Spectrix S40G RGB 512 GB: 3,500 MB/s read, 3,000 MB/s write
- MyDigitalSSD BPX Pro 256 GB (this drive): 3,400 MB/s read, 1,100 MB/s write
In practice, this write-speed asymmetry has limited real-world impact for the OS-drive use case the 240GB targets. Windows boots and application launches are overwhelmingly read-dominated. Game installs from Steam or Epic hit the download speed limit (gigabit internet is ~125 MB/s) long before the drive's 1,100 MB/s write ceiling. The scenario where you notice the write limit is copying large files from another NVMe drive — a 100GB game folder takes roughly 90 seconds instead of 30 seconds with a higher-capacity E12 drive. For a pure OS-and-applications drive that rarely sees bulk writes, the 240GB BPX Pro delivers the full E12 read experience at a budget price.
The DRAM cache keeps random I/O latency low and consistent. Unlike DRAM-less HMB designs that show latency spikes under mixed workloads, the BPX Pro maintains its composure whether you're installing Windows updates in the background while working or running a virus scan alongside your usual applications. For a boot drive where unpredictable mixed workloads are the norm, dedicated DRAM is a genuine advantage over budget HMB alternatives.
🖥️ Endurance and warranty
MyDigitalSSD backs the BPX Pro 240GB with a 5-year limited warranty and a 380 TBW endurance rating — roughly 0.87 drive-writes-per-day over the warranty period, which is generous for a 240GB drive. The warranty is tied to the original purchaser and does not cover data recovery.
📊 Specs
| Category | Value |
|---|---|
| Capacity [?] | 256 GB |
| Interface [?] | M.2 3.0 x 4 |
| Controller [?] | Phison PS5012-E12 |
| Memory type [?] | Toshiba TLC |
| DRAM [?] | SK Hynix DDR3 or DDR4 |
| Read speed (MB/s) [?] | 3400 |
| Write speed (MB/s) [?] | 1100 |
| Read IOPS [?] | n/a |
| Write IOPS [?] | n/a |
| Endurance (TBW) [?] | 380 |
| MTBF (million hours) [?] | n/a |
| Warranty (years) [?] | 5 |
Conclusion
The MyDigitalSSD BPX Pro 240GB is an interesting value proposition: it pairs a flagship-class Phison E12 controller with dedicated DRAM at an entry-level capacity and price. The 3,400 MB/s read speed means it boots and loads as fast as any PCIe 3.0 NVMe drive, and the DRAM cache means it handles mixed workloads without the latency penalties of DRAM-less alternatives. The 1,100 MB/s write ceiling is the tradeoff for the 240GB capacity, but for a pure OS-and-applications drive in a budget build — where capacity is secondary to responsiveness and reliability — it makes a compelling case against DRAM-less budget competitors that cost the same. If you need capacity, step up to the 480GB or 960GB models; if you need a responsive, DRAM-equipped boot drive at the lowest possible entry price, the BPX Pro 240GB delivers where it counts.
+ Pros
- 3,400 MB/s read — full-fat Phison E12 read performance at entry-level price
- Dedicated DRAM cache — consistent mixed-workload latency, no HMB compromises
- Phison PS5012-E12 — proven 8-channel flagship platform
- 380 TBW endurance — 0.87 DWPD, generous for a 240GB drive
- Single-sided M.2 2280 — universal compatibility
- 5-year warranty — matching premium-drive coverage terms
- Cons
- 1,100 MB/s write — limited by NAND parallelism at 240GB capacity
- 240GB is tight for OS plus a game library — best as OS-only drive
- No hardware encryption (TCG Opal / Pyrite)
- E12 runs warm at higher capacities; 240GB is cooler but still needs airflow
- Limited retail availability vs. major brands
- Write speed gap vs. 480GB/960GB models is large for bulk file transfers
🛒 Buy this or similar SSD Storage:
✨ Video Review
NVMe vs Sata iii - How much faster is it? - MyDigitalSSD BPX Review
