MSI Spatium M450 500GB - Budget PCIe 4.0 NVMe SSD

Posted on May 17, 2026 by Raymond Chen

The MSI Spatium M450 500GB is the entry capacity in MSI's budget PCIe 4.0 NVMe line - Phison PS5019-E19T DRAM-less HMB, 3,600 MB/s reads, 300 TBW endurance, and a five-year warranty.

MSI Spatium M450 500GB - Budget PCIe 4.0 NVMe SSD

The MSI Spatium M450 500 GB pairs Phison's four-channel PS5019-E19T controller with 3D TLC NAND in a DRAM-less Host Memory Buffer (HMB) configuration. The E19T is Phison's budget PCIe 4.0 part - a leaner, lower-power chip than the eight-channel PS5018-E18 that powers flagship drives - and is the same controller used in the Corsair MP600 GS, several OEM Acer Predator models, and other low-cost PCIe 4.0 drives. The PCB is single-sided M.2 2280, suitable for any modern motherboard or laptop M.2 bay.

MSI ships the Spatium M450 in 500 GB, 1 TB, and 2 TB capacities. The 500 GB SKU on this page reaches the same 3,600 MB/s sequential read rating as the larger siblings but drops sequential writes from 3,000 MB/s on the 1 TB to 2,300 MB/s here, with random read IOPS scaling from 420,000 down to 300,000 because the E19T has fewer NAND dies to fan out across at this capacity. MSI's typical product positioning makes the 500 GB tier the lowest-cost entry into PCIe 4.0 storage, useful when budget is tight and capacity needs are modest.

The Spatium M450 500 GB targets entry-level gaming, productivity, and OS-boot use cases on PCIe 4.0 motherboards where the buyer wants the generation's features without the price premium of a DRAM-equipped flagship. Its direct rivals are the WD Black SN770 500 GB (similar tier, faster reads), the Kingston NV2 500 GB (variable NAND, similar price), the Crucial P3 500 GB (PCIe 3.0 budget option), and the Samsung 980 500 GB (DRAM-less, similar tier). The M450 holds the budget-PCIe-4.0 middle ground - faster than entry PCIe 3.0 tier but materially slower than DRAM-equipped flagships.

✅ Storage Comparisons:

Best PCIe 4.0 SSD Drive Top PCIe 3.0 SSD Drives Top 2 TB SSDs

🚀 Performance and benchmarks

Manufacturer ratings for the Spatium M450 500 GB land at 3,600 MB/s sequential reads and 2,300 MB/s sequential writes, with random performance up to 300,000 read and 550,000 write IOPS. Those numbers sit above any PCIe 3.0 drive on reads but well below the 5,000+ MB/s class of the WD Black SN770 500 GB. The asymmetry between random read and write IOPS reflects the E19T's four-channel layout with limited NAND dies on the 500 GB capacity.

Performance comparison

MSI Spatium M450 500 GB vs M.2 4.0 x 4 peers

Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 4.0 x 4 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.

PNY XLR8 CS3140 1 TB: 7,500 MB/s read, 5,650 MB/s write
PNY XLR8 CS3140 2 TB: 7,500 MB/s read, 6,850 MB/s write
Asgard AN4 512 GB: 7,500 MB/s read, 5,500 MB/s write
Asgard AN4 1 TB: 7,500 MB/s read, 5,500 MB/s write
MSI Spatium M450 500 GB (this drive): 3,600 MB/s read, 2,300 MB/s write

Sustained writes show the DRAM-less HMB design's main limitation at this capacity. With only 500 GB of NAND, the drive holds peak SLC-cached writes for roughly 50-80 GB of continuous transfer before the cache exhausts and writes drop into TLC direct-write territory around 600-900 MB/s. That profile is invisible for boot, application, and gaming workloads - and even for moderate file copies. For sustained capture or large dataset moves the limit matters; the 1 TB or 2 TB Spatium M450 has more SLC cache headroom. The drive runs unusually cool because the four-channel E19T has lower steady-state power than DRAM-equipped flagships, useful in tight thermal envelopes including laptops and HTPC builds. DirectStorage operates as expected on a supported PCIe 4.0 platform, with the caveat that 500 GB is a tight capacity for modern game asset libraries.

🖥️ Endurance and warranty

MSI rates the Spatium M450 500 GB at 300 TBW (terabytes written) over a five-year limited warranty, equivalent to 600 TBW per terabyte of capacity. At a heavy 50 GB/day sustained write workload the budget lasts roughly 16 years - well past the warranty window - and a typical desktop user writing 10-20 GB/day will never approach it before the drive ages out. The published MTBF rating is 1.5 million hours, a population statistic rather than a per-drive promise. MSI handles consumer RMA directly through msi.com's support portal with serial number registration, and the company maintains a global distribution footprint that simplifies returns relative to OEM-only or regional brands. The 300 TBW figure matches the WD Black SN770 500 GB (300 TBW) and trails the Samsung 970 EVO Plus 500 GB at the same capacity.

📊 Specs

Category	Value
Capacity [?]	500 GB
Interface [?]	M.2 4.0 x 4
Controller [?]	Phison E19T
Memory type [?]	TLC
DRAM [?]	HMB
Read speed (MB/s) [?]	3600
Write speed (MB/s) [?]	2300
Read IOPS [?]	300000
Write IOPS [?]	550000
Endurance (TBW) [?]	300
MTBF (million hours) [?]	1.5
Warranty (years) [?]	5

Conclusion

The MSI Spatium M450 500 GB is a sensible entry pick for builders on tight budgets who still want PCIe 4.0 generation features over a PCIe 3.0 drive. Buyers chasing peak performance should step up to the WD Black SN770 500 GB or Samsung 980 500 GB, both of which deliver materially higher sequential reads at a modest price premium. Skip the M450 if your workload requires sustained writes beyond 80 GB at a time, or if you can stretch the budget to a DRAM-equipped drive - in either case the 1 TB Spatium M450 (or a competing 1 TB drive) is the better value per gigabyte. As a value PCIe 4.0 NVMe at 500 GB the Spatium M450 does the job for boot, gaming, and general productivity with a five-year warranty.

+ Pros

3,600 MB/s sequential reads on PCIe 4.0
300 TBW endurance with 5-year warranty
Phison PS5019-E19T controller
Low power consumption, runs cool under load
Global retail availability and direct MSI RMA
Single-sided 2280 PCB fits any laptop M.2 slot

- Cons

DRAM-less HMB lags on heavy random writes
2,300 MB/s writes much lower than 1 TB Spatium M450
SLC cache exhausts after roughly 60 GB continuous writes
500 GB tight for modern game libraries
No included heatsink in retail box

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✨ Video Review

MSI Spatium M450 NVMe M 2 SSD Review

⁉️ FAQ

It is workable for casual gaming on a tight budget but constrained by capacity. The M450 500 GB delivers 3,600 MB/s sequential reads on PCIe 4.0, fast enough for current game asset streaming and Steam library installs. Game load times sit within a couple of seconds of higher-tier drives in most titles. The constraint is capacity: 500 GB holds only six to ten modern triple-A games, which is tight for a primary gaming drive. For a serious gaming build jump to the 1 TB or 2 TB Spatium M450, or buy a faster 1 TB drive such as the WD Black SN770 1 TB.

Marginally. The PS5 expansion slot recommends a PCIe 4.0 NVMe drive rated at 5,500 MB/s or higher sequential reads, dimensions within 110 x 25 x 11.25 mm including heatsink, and the M.2 2280 form factor. The M450 falls under the recommended bandwidth threshold at 3,600 MB/s. The PS5 firmware will accept it and games will install, but Sony does not recommend it and loading screens will be slower than on a compliant drive. The 500 GB capacity is also tight for PS5 use - one or two modern games can fill it. For PS5 expansion choose a 1 TB or larger drive that meets Sony's bandwidth target instead.

No, the M450 is a DRAM-less design using Host Memory Buffer (HMB). HMB borrows a small slice of system RAM, typically 64 MB, to hold the logical-to-physical mapping table that a dedicated DRAM cache would otherwise carry. The trade-off is cost: MSI uses the savings to position the M450 below the WD Black SN850X and Samsung 990 Pro on price. The practical penalty is modest on modern Windows or Linux platforms for everyday workloads, but more visible on heavy sustained random writes, NTFS metadata churn, and large indexing operations.

MSI rates the 500 GB Spatium M450 at 300 TBW (terabytes written) over the five-year warranty period. The TBW figure scales linearly at 600 TBW per terabyte of capacity, so the 1 TB SKU is 600 TBW and the 2 TB SKU is 1,200 TBW. At a heavy 50 GB/day sustained write workload the 500 GB endurance lasts roughly 16 years - well beyond the warranty window - and an average desktop user writing 10-20 GB/day will never approach the limit. The endurance matches the WD Black SN770 500 GB and exceeds the Kingston NV2 500 GB at the same capacity.

The WD Black SN770 500 GB is the closest direct comparison. Both are DRAM-less HMB designs with 300 TBW endurance at 500 GB and a five-year warranty. The SN770 hits 5,000 MB/s sequential reads versus the M450's 3,600 MB/s, and 4,000 MB/s writes versus 2,300 MB/s - the SN770 is the noticeably faster drive on raw speed. The M450 typically retails for less and runs slightly cooler under load thanks to its budget controller and lower peak performance. For tight budgets the M450 is the value pick; for any workload that benefits from higher throughput the SN770 is the better buy.

Usually no, even bare. The Phison PS5019-E19T is a four-channel design that draws materially less power than an eight-channel flagship controller; reviewers consistently find the M450 avoids thermal throttling under typical gaming and application loads without active cooling. Desktop builds with the motherboard's M.2 heatsink installed will not see throttling at all. Laptops with poorly ventilated M.2 slots may see modest throttling on extended sustained writes; for a PS5 expansion install, add a third-party heatsink that fits the 11.25 mm height budget regardless of drive selection.

Almost never. The 1 TB Spatium M450 typically costs only 30-50 percent more than the 500 GB while delivering 30 percent higher sequential writes (3,000 MB/s vs 2,300 MB/s), 40 percent higher random read IOPS (420,000 vs 300,000), and double the TBW endurance (600 vs 300 TBW). On a per-gigabyte basis the 1 TB is significantly cheaper. The only scenario where the 500 GB makes sense is an absolute fixed-budget build where the price difference is genuinely unaffordable. For everyone else, the 1 TB Spatium M450 is the substantially better buy.