Quick answer- Every current mainstream chipset tier has a Gen5 x4 M.2 slot connected to the CPU: AMD X870E, X870, and B850, and Intel Z890 and B860.
- A Gen5 SSD reads up to about 14,900 MB/s, roughly twice a fast Gen4 drive. It pays off for large files and big datasets, while Gen4 is enough for gaming and most creative work.
- For most builders, AMD B850 or Intel B860 is the sensible stopping point. Read the individual board’s spec table, because two boards with the same chipset can be wired differently.
PCIe 5.0 SSDs are fast, but they only reach that speed in the right M.2 slot. Older guides list specific Z790 boards with prices from 2024, which no longer match what is on shelves. This guide explains which chipsets give you a Gen5 M.2 slot today, what the real speed gain is, and how to check a board before you buy.
1. What PCIe 5.0 Actually Gives You
PCIe 5.0 signals at 32 GT/s per lane, twice the 16 GT/s of PCIe 4.0. A Gen5 x4 link carries about 15.75 GB/s in each direction, versus about 7.9 GB/s for Gen4 x4.
| Interface | Ceiling per direction | Fastest drives (read / write) | Best for |
|---|
| PCIe 3.0 x4 | ~3.9 GB/s | ~3,500 / ~3,300 MB/s | General computing, entry gaming |
| PCIe 4.0 x4 | ~7.9 GB/s | ~7,400 / ~7,000 MB/s | Gaming, video editing, most creative work |
| PCIe 5.0 x4 | ~15.75 GB/s | ~14,900 / ~14,000 MB/s (2 TB and up) | RAW video, large datasets, model loading |
One detail matters when you shop: 1 TB versions of Gen5 drives usually hit the full read speed but write much slower than the 2 TB and 4 TB versions.
My take (20 years in IT): Do not buy a board by chipset name alone. Open the board's spec table and confirm which M.2 slot is Gen5 and how it is wired.
2. Which Chipsets Have a Gen5 M.2 Slot
| Chipset | Gen5 x4 M.2 (CPU) | Gen5 x16 graphics slot | USB4 40 Gbps |
|---|
| AMD X870E | Required, plus 4 extra lanes | Required | Required (2+ ports) |
| AMD X870 | Required, plus 4 extra lanes | Required | Required (2+ ports) |
| AMD B850 | Required (1 slot) | Optional | Optional |
| AMD B650 | Common, not guaranteed | No (B650E adds Gen5) | Rare |
| Intel Z890 | Yes (1 slot, plus a Gen4 x4) | Yes | From CPU, commonly 2 ports |
| Intel B860 | Yes (1 slot) | Yes | Select boards, usually 1 |
| Intel H810 | Not in Intel’s spec | Many boards wire Gen4 | Few boards |
All of these use DDR5 only. Older guides list LGA 1700 boards such as the Z790. Intel’s Core Ultra 200S desktop chips need an LGA 1851 board, and Ryzen 7000 and 9000 chips need an AM5 board.
3. Do You Need Gen5?
- Likely yes: RAW video editors, people moving very large files daily, and anyone swapping large AI models. Newegg estimates a 40 GB model loads in about three seconds from a Gen5 drive versus six from a fast Gen4 drive, before software overhead.
- Probably not: gamers and general users. Newegg rates Gen4 as enough for gaming, video editing, and most creative work.
- Graphics slot: a Gen5 x16 slot barely matters for current cards. In games, an RTX 50-series or Radeon RX 9000-series card on PCIe 4.0 x16 runs within a few percent of Gen5. Treat it as insurance for a future card.
Narrowing it down? Prices and availability change often, so check the current listing.
M.2 SSD heatsinks → 4. Picks From Reviewers
PCMag’s 2026 motherboard roundup calls out two high-end favorites: the Gigabyte X870E Aorus Master for AMD AM5 and the ASRock Z890 Taichi for Intel LGA 1851. PCMag notes the X870E Aorus Master supports USB4, Wi-Fi 7, and PCIe 5.0 for both the main PCIe x16 slot and an M.2 SSD slot, and the Z890 Taichi has six M.2 slots. Tom’s Hardware organizes its 2026 list by chipset, with separate picks for X870E, X870, B850, Z890, and B860 boards.
Prices change often and component costs have been rising in 2026, so compare current listings rather than relying on old price ranges.
5. How to Check a Board Before You Buy
- Read the board’s own spec table, not just the chipset name, and find the slot labeled PCIe 5.0 x4 M.2.
- Confirm the slot connects to the CPU, not the chipset, so it gets the full lanes.
- Check for an M.2 heatsink. Gen5 drives run hot and can throttle without one.
- Count how many M.2 slots share lanes. Some boards disable a SATA port or another slot when all are in use.
- Match the socket to your CPU: AM5 for Ryzen 7000 and 9000, LGA 1851 for Core Ultra 200S. One caution: a Ryzen 8000 APU on an AM5 board has fewer lanes and a lower graphics link.
Ready to compare options? Prices and availability change often, so check the current listing.
AMD B850 motherboards → My take (20 years in IT): Be honest about your workload. For gaming and most creative work, Gen4 is enough, so Gen5 mainly makes sense for large files and big datasets.
Frequently Asked Questions
Does my motherboard support a PCIe 5.0 SSD?
Check the spec table for a PCIe 5.0 x4 M.2 slot. Current X870E, X870, B850, Z890, and B860 boards have one connected to the CPU.
Can I use a PCIe 5.0 SSD in a PCIe 4.0 slot?
Yes. It is backward compatible, but it will only run at Gen4 speed, about 7,000 to 7,400 MB/s.
Is a PCIe 5.0 SSD worth it for gaming?
For most gamers, a Gen4 SSD is enough. Spend the difference on graphics or memory unless you also edit large video files.
Do I need Wi-Fi 7 on the same board?
No. Wi-Fi 7 is not a chipset feature. It comes from a separate module the board maker adds, and Windows needs version 24H2 or later to use it.
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Last updated: October 22, 2026.
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