The answer — one pick, priced
Get the
WD Black SN850X 8TB
No budget ceiling
13 sources and Tom's Hardware's "no-compromise 8TB champion" verdict — plus a ~16% drop that makes it the cheapest in-stock 8TB drive of any kind, at 7,200 MB/s.
Some links earn us a commission — it never changes the pick. Winners are chosen before payouts are checked.
Fit ledger — need → measured evidence
■ The catch — co-equal billing, always
It's double-sided. Fitting 8TB on a 2280 stick pushed chips onto both faces of the PCB, which locks the SN850X out of nearly every laptop, the PS5, and some compact ITX boards. Verify your M.2 slot clears a two-sided drive before you buy — many do not.
Dealbreaker? Runner-up №2 is the only in-stock single-sided 8TB ↓
■ Every product has a catch. Verdicts that hide it are how bad buys happen.
Runners-up — if your needs differ
Adjacent verdicts — same method
Traps — this verdict avoids
The double-sided lock-out
To fit 8TB on a 2280 stick, the Samsung 9100 Pro and WD Black SN850X both went double-sided — which locks them out of nearly every laptop, the PS5, and some compact ITX boards. Verify your slot takes a two-sided drive before you buy.
The Gen5 heat tax
Most PCIe 5.0 drives draw 11-14W under sustained load, and without active or large passive cooling their sustained writes throttle 40-60% within 30-60 seconds. Only the SN8100 (~7.5W average) escapes this.
Paying 2x for one stick
The AI-driven NAND shortage holds 8TB street pricing at roughly 2x its 2025 lows — the SN8100 lists at ~$1,900 against a $999 launch MSRP. Two 4TB drives often cost far less; single-stick 8TB only earns its premium when M.2 slots are scarce.
Provenance — 13 sources, dated
Winners are picked before affiliate payouts are checked, from the full research dossier at knowledgelib.io. Prices, stock and listings are re-verified monthly by an automated pipeline. Some links earn us a commission — it never changes the pick, and we say so here rather than in a footer you'd never read.