Are PCIe 5.0 SSDs Worth It in 2026?
Short answer: the floor converged, the middle didn't — so "Gen 4 or Gen 5" is no longer the question worth asking. When we last looked at this in June 2025, the call was that Gen 5 prices were closing on Gen 4 and would likely become the default recommendation by late 2025. That did not happen, and it is worth saying so plainly.
In our July 16, 2026 price snapshot, the median 1TB Gen 5 drive we track costs $243.92 against $199.00 for the median 1TB Gen 4 — still a 23% premium, fourteen months after we predicted it would vanish. At 4TB the gap is wider, not narrower.
But the cheapest Gen 5 drives have genuinely crossed over. Crucial's P510 1TB sits at $176.97 — below Crucial's own Gen 4 P310 1TB at $179.99. That is the same brand, the same capacity, the newer interface, for less money. So the honest 2026 answer is not "buy Gen 4" or "buy Gen 5". It is that the generation on the box has stopped predicting the price.
What Gen 5 and Gen 4 actually cost right now
Prices from our July 16, 2026 snapshot, counting only non-discontinued M.2 NVMe drives at each capacity:
| Capacity | Gen 4 (tracked / from / median) | Gen 5 (tracked / from / median) | Median gap |
|---|---|---|---|
| 1TB | 77 / $99.99 / $199.00 | 26 / $139.99 / $243.92 | +23% |
| 2TB | 80 / $68.92 / $321.09 | 26 / $234.99 / $399.99 | +25% |
| 4TB | 44 / $194.99 / $519.99 | 19 / $239.99 / $697.95 | +34% |
Two things fall out of that table.
First, the premium is real and it grows with capacity. If you want a big fast drive, Gen 5 still taxes you meaningfully — a third more at 4TB.
Second, the ranges overlap enormously. A $234.99 Gen 5 2TB is cheaper than a $291.99 Gen 4 2TB. Only 3 of the 26 Gen 5 1TB drives we track price at or below the Gen 4 median, but those three exist, and they are not obscure. The median premium is mostly telling you that the Gen 5 shelf is stocked with flagship parts, not that Gen 5 silicon is inherently expensive.
Where the crossover actually is
At 1TB, these are the drives where the generation gap has collapsed:
- Crucial P510 1TB — Gen 5, $176.97
- Crucial P310 1TB — Gen 4, $179.99
- PNY CS2150 1TB — Gen 5, $189.99
- WD_BLACK SN7100 1TB — Gen 4, $189.99
Gen 5 and Gen 4 at literal price parity, within one shopping session. Meanwhile the flagship tier keeps the old gap alive: Samsung's 990 Pro (Gen 4) is $238.88 while the 9100 PRO (Gen 5) is $249.95 and the WD_BLACK SN8100 is $269.99.
At 2TB the crossover is starker still: the FanXiang S900 2TB is a $234.99 Gen 5 drive, comfortably under the $291.99 Gen 4 P310 2TB. At 4TB, Gen 4 still wins on absolute floor — the KIOXIA EXCERIA 4TB at $194.99 is less than half the cheapest Gen 5 4TB, the Addlink G55 at $344.44.
Does the extra speed do anything for you?
This is where the 2025 piece was right, and nothing since has overturned it. Gen 5 roughly doubles peak sequential throughput — the 7,000 MB/s class becomes the 12,000-14,000 MB/s class. That number is real, and it is also the number least connected to how a desktop actually feels.
Everyday desktop work is dominated by small random reads and queue depths of one or two, where both generations are limited by controller latency and NAND, not by the bus. Booting, launching applications, and loading levels sit in that regime. The workloads that genuinely consume sequential bandwidth are sustained large-file work: multi-hundred-gigabyte video projects, big dataset staging, moving whole libraries between drives.
DirectStorage remains the wildcard it was in 2025 — supported by a modest set of titles rather than the default path for the games most people play, so the asset-streaming case for Gen 5 is still more promise than practice.
Be clear about what this is and isn't: these are catalogue prices from our own tracking, not a fresh lab run. Our spec sheets carry the nominal per-generation figures, so we are describing interface classes, not per-drive measurements. We did not re-benchmark these drives for this update.
The costs that don't show up on the price tag
Gen 5 controllers run hot enough that most drives ship with, or expect, a substantial heatsink — several of the drives above are sold in heatsink variants for that reason. In a compact case, that heatsink can foul a large air cooler or a front-mounted radiator.
There is also a platform cost. On mainstream desktop boards the Gen 5 M.2 slot commonly shares its lanes with the primary PCIe slot, so populating it can drop your graphics card from x16 to x8. On most current GPUs that is a small loss, but it is a real trade that a Gen 4 slot doesn't ask you to make. Check your motherboard's block diagram before assuming a free upgrade.
What to buy
Stop shopping by generation. Shop by price, capacity, and endurance, and take Gen 5 when it happens to be free. At 1TB and 2TB that is now a live option — the P510 and the S900 are Gen 5 drives sitting at or below mainstream Gen 4 money, and there is no reason to refuse the newer interface at the same price. At 4TB, Gen 4 still holds a decisive cost advantage and remains the value pick.
Pay the genuine Gen 5 premium only if you routinely move very large files and can answer yes to the heat and lane questions above. For gaming and general desktop use in 2026, a good Gen 4 drive is still indistinguishable in daily use — and the money saved at 4TB buys a lot more capacity.
The 2025 prediction that Gen 5 would simply take over was wrong. What happened instead is more useful: the bottom of the Gen 5 market fell to meet Gen 4, while the top stayed expensive. Read the price, not the label.
Building a system? Our free PC builder tool checks drive fit against your motherboard's M.2 slots, and you can browse everything we track in the storage category.