Samsung Internal SSD 990 EVO Plus (MZ-V9S4T0BW)
Bottom line: The Samsung Internal SSD 990 EVO Plus: 7,250 MB/s sequential reads, 6,300 MB/s writes on the 4TB model; main trade-off: needs a heatsink from your board; none is included in the box.
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Pros & Cons
Pros
- ✓ 7,250 MB/s sequential reads, 6,300 MB/s writes on the 4TB model
- ✓ Dual interface: runs PCIe 4.0 x4 or PCIe 5.0 x2, so no wasted lanes
- ✓ 4TB in one M.2 slot fits a large modern game library
- ✓ 73% better energy efficiency than the prior generation, per Samsung
Cons
- ✗ Needs a heatsink from your board; none is included in the box
- ✗ PCIe 5.0 x2 mode caps below true PCIe 5.0 x4 drive speeds
- ✗ 4TB capacity carries a steep per-drive cost versus 1TB or 2TB
- ✗ Magician software for health and firmware is Windows-focused
Manufacturer description
The Samsung 990 EVO Plus 4TB (MZ-V9S4T0BW) is a dual-interface NVMe 2.0 drive that reads sequentially at up to 7,250 MB/s and writes at up to 6,300 MB/s, putting a full 4TB game library or scratch disk within reach of a single M.2 slot. Its standout trick is interface flexibility: the same drive negotiates PCIe 4.0 x4 or PCIe 5.0 x2, so it drops into an older gaming board or a current-gen platform without leaving bandwidth stranded. Samsung rates it at 73 percent better energy efficiency than the previous generation, which matters in small-form-factor builds and laptops where sustained…
SpecPicks Verdict
SpecPicks scored Samsung Internal SSD 990 EVO Plus using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. Compare with similarly-priced alternatives in the ssds & storage category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
How fast is the Samsung 990 EVO Plus 4TB?
Sequential reads reach up to 7,250 MB/s and sequential writes up to 6,300 MB/s. Real-world speed depends on your motherboard interface, workload, and thermal headroom.
Will it work in a PCIe 4.0 motherboard, or do I need PCIe 5.0?
Both work. The drive supports PCIe 4.0 x4 and PCIe 5.0 x2, so it runs at full rated speed in a PCIe 4.0 x4 M.2 slot and also drops into newer PCIe 5.0 platforms.
Does the 990 EVO Plus come with a heatsink?
No. The box contains only the 4TB drive (model MZ-V9S4T0BW). It relies on Samsung's intelligent thermal solution plus whatever M.2 heatsink your motherboard provides.
Is 4TB enough for a modern game library?
Yes for most builds. At roughly 100-150 GB for a current AAA title, 4TB holds dozens of installed games plus your OS, with room for captures and mods.
What warranty does this SSD carry?
Warranty terms vary by region and retailer. Check the current Amazon product listing or Samsung's support page for the coverage period and endurance rating that applies to your purchase.
Key Features
- Speed up to the next level: Sequential read/write speed up to 7250/6300 MB/s*
- Increased energy performance**: Enjoy reduced load time for PC games or access time for large files
- Intelligent thermal solution: for efficient thermal control of the NAND chip that ensures consistent performance
- Versatility and flexibility: thanks to PCIe 4.0 x4 and PCIe 5.0 x2 interfaces
- Samsung Magician Management Software*** to monitor SSD health and benefit from the latest firmware updates
- Box contents: 1 x Samsung Internal SSD 990 EVO Plus, 4TB, NVMe 2.0, PCIe 4.0 x4 / 5.0 x2, MZ-V9S4T0BW
Full Specifications
| Brand | Samsung |
|---|---|
| Color | Black |
| Model Name | 990 EVO Plus |
| Read Speed | 7250 megabytes_per_second |
| Unit Count | 1 Count |
| Form Factor | M2 |
| Media Speed | 6300 megabytes_per_second |
| Box contents | 1 x Samsung Internal SSD 990 EVO Plus, 4TB, NVMe 2.0, PCIe 4.0 x4 / 5.0 x2, MZ-V9S4T0BW |
| Model Number | MZ-V9S4T0BW |
| Compatibility | PC |
| Built-In Media | Samsung SSD 990 EVO Plus, Installation Instructions, Instruction Manual |
| Hard-Drive Size | 4 TB |
| Mfr Part Number | MZ-V9S4T0BW |
| Number of Items | 1 |
| Special Feature | Hardware Encryption |
| Hardware Platform | PC |
| Installation Type | Internal Hard Drive |
| Compatible Devices | Computer, Laptop |
| Data Transfer Rate | 7250 megabytes_per_second |
| Enclosure Material | Nand Flash |
| Full listing title | Samsung Internal SSD 990 EVO Plus, NVMe 2.0 PCIe 4.0 x 4/5.0x2, 4TB, Read Speed up to 7250MB/s, Ideal for Gaming and Office, MZ-V9S4T0BW |
Ready to buy?
Samsung Internal SSD 990 EVO Plus, NVMe 2.0 PCIe 4.0 x 4/5.0x2, 4TB, Read Speed up to 7250MB/s, Ideal for Gaming and Office, MZ-V9S4T0BW is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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