SATA vs NVMe under $100: which makes sense for your system
The decision between SATA and NVMe at the $100 price point comes down to one question: does your computer have an M.2 slot? If yes, buy NVMe — the performance gap is enormous and the price gap has largely closed. If no (older laptops, desktops with only SATA ports, or NAS systems), buy SATA. SATA SSDs connect via the same cable as hard drives and top out at 550–560 MB/s sequential read. That's roughly 10× faster than a mechanical hard drive and enough for operating system use, gaming, and file work without any noticeable bottleneck in everyday tasks. The Samsung 870 EVO and WD Blue SATA remain the gold standard at 1TB for around $60–70. NVMe SSDs connect directly via the PCIe bus. Budget PCIe 3.0 drives like the Samsung 980 read at 3,500 MB/s. Budget PCIe 4.0 drives like the Crucial P3 Plus reach 5,000–5,100 MB/s. That's 6–9× faster than SATA, and both are now available for $60–85 at 1TB. For any modern motherboard (Intel 10th gen / Ryzen 3000 and newer), NVMe is the right default.
Best SATA SSD under $100: Samsung 870 EVO 1TB (~$65–75)
The Samsung 870 EVO is the most reliable 2.5-inch SATA SSD money can buy at this price. It reads at 560 MB/s and writes at 530 MB/s — the SATA interface ceiling. Samsung uses its own V-NAND TLC (triple-level cell) with a proprietary MJX controller, a combination that has demonstrated exceptional longevity in enterprise and consumer use alike. At 1TB, the 870 EVO carries 600 TBW endurance — high for its class — and a 5-year warranty. For context, writing 50GB per day takes 33 years to exhaust 600 TBW. The drive will be obsolete long before it wears out. Who this is for: upgrading a laptop that only has a 2.5-inch bay, adding a fast secondary drive to a desktop for game storage, or replacing an aging hard drive in a machine from 2015 or earlier that has no M.2 slot. If you have an M.2 slot, skip this and buy the Crucial P3 Plus instead — same capacity, 9× the sequential speed, similar price.
Best PCIe 3.0 NVMe under $100: Samsung 980 1TB (~$80–90)
The Samsung 980 is the best-value PCIe 3.0 NVMe drive in 2026. It delivers 3,500 MB/s read and 3,000 MB/s write — 6× faster than SATA — and it's been available long enough to have a strong reliability track record. The 980 uses Samsung's in-house Elpis controller and V-NAND TLC, the same NAND used in Samsung's premium 990 Pro. The 980 (not the 980 Pro — PCIe 4.0) typically sits at $80–90 for 1TB. It lacks DRAM cache, which means random read performance is slightly lower than DRAM-equipped drives. For gaming and OS use this is invisible. For professional database workloads with thousands of random I/O operations per second, it's worth knowing. At PCIe 3.0 speeds, the 980 is backward-compatible with any system that supports M.2 — including older AMD B450/X470 boards and Intel Z390/B360 boards from 2018–2019. If you have PCIe 4.0 available (AMD Ryzen 5000+, Intel 12th gen+), the Crucial P3 Plus is faster for the same or lower price.
Best PCIe 4.0 NVMe under $100: Crucial P3 Plus 1TB (~$57–65)
The Crucial P3 Plus is the best-value SSD in the entire sub-$100 category in 2026. At $57–65 for 1TB, it delivers 5,000 MB/s read and 3,600 MB/s write — real PCIe 4.0 throughput — at a price that was impossible 18 months ago. Crucial (a Micron brand) uses QLC NAND here, which is where the cost savings come from. QLC means four bits per cell instead of three (TLC). The trade-off is lower sustained write performance when the SLC write cache fills up: large sequential writes beyond ~30GB on a 1TB drive slow to 600–800 MB/s. For game installations, OS operations, and file reads — which is what most drives do most of the time — this ceiling never appears. You're reading data, not writing 30GB in one shot. The P3 Plus ships with a 5-year warranty and 220 TBW at 1TB. It fits any M.2 2280 slot and is backward compatible with PCIe 3.0 motherboards (running at PCIe 3.0 speeds, still faster than SATA). For a new build, a gaming PC upgrade, or a laptop refresh under $100, the P3 Plus is the default answer.