From the motherboard's point of view, AMD's AM5 is the safer platform for a new build: AMD has committed to supporting the socket through 2027 and beyond, and its mainstream B-series boards allow CPU overclocking. Intel is the better choice when the processor you want is an Intel one, or when an LGA1700 board with DDR4 gets a budget build over the line. Pick the processor on its merits first; this guide covers what each choice then means for the board.
The four platforms you can buy today
Each maker has a current socket and a previous one that is still widely sold.
| AM5 | AM4 | LGA1851 | LGA1700 | |
|---|---|---|---|---|
| Maker | AMD, current | AMD, previous | Intel, current | Intel, previous |
| Processors | Ryzen 7000, 8000G, 9000 | Ryzen 1000 to 5000 (chipset and BIOS dependent) | Core Ultra 200S | 12th, 13th, 14th gen Core |
| Memory | DDR5 only | DDR4 only | DDR5 only | DDR4 or DDR5 by board, never both |
| CPU overclocking | X- and B-series, except B840; not A620 | X- and B-series; not A520 | Z890 only | Z690 and Z790 only |
| Mainstream chipset | B650, B850 | B550 | B860 | B760 |
| Newer CPUs to come | AMD says supported through 2027 and beyond | No | No long-term public commitment | No |
Longevity: how long the socket will last
This is the clearest difference between the two makers. AMD kept AM4 going from 2017 to the Ryzen 5000 series, and owners of early boards were able to fit far faster processors years later, subject to chipset and BIOS support. AMD has said AM5, launched in 2022, will be supported through 2027 and beyond, and it already takes three processor families.
Intel changes sockets more often. LGA1700 covered three generations, which is long by Intel's standards, and is now finished. For LGA1851, launched in 2024, Intel has made no comparable public commitment. None of this makes an Intel board a poor purchase. It means that on Intel you should buy the processor you intend to keep for the life of the PC, while on AM5 a cheaper processor now and a better one later is a realistic plan. Our AM5 vs AM4 and LGA1851 vs LGA1700 guides go into each pair.
Memory: DDR4 or DDR5
Both current platforms, AM5 and LGA1851, are DDR5 only. If you are buying new memory anyway, that is no hardship. If you have good DDR4 you want to reuse, your options are AM4, or an LGA1700 board built for DDR4. LGA1700 is the only platform where you must check the board's memory type, because a board takes one kind and never both, and the DDR4 and DDR5 versions of a model often share a name apart from a suffix. See DDR4 vs DDR5 motherboards.
Overclocking and what the chipset allows
Intel restricts CPU overclocking to its Z-series chipsets, and you also need an unlocked K-series processor. B- and H-series boards run the CPU at stock, though B-series boards from B560 onwards allow memory overclocking and XMP profiles. So an Intel buyer who wants to overclock must pay for a Z board.
AMD allows CPU overclocking on X-series and B-series chipsets, with B840 the exception, and not on the A-series. In practice this means an AMD buyer can stay on a mainstream board without giving up any tuning options. Whether overclocking is worth doing at all is another matter: modern processors from both makers run close to their limits out of the box, and most builders leave them there and simply enable the memory profile. The tiers are explained in motherboard chipsets explained.
PCIe 5.0 and connectivity
On AM5, PCIe 5.0 support depends on the chipset. X870E, X870, X670E and B650E guarantee it for both the graphics slot and an M.2 slot; B850 guarantees it for M.2; on B650 it is board dependent. On Intel, LGA1700 processors provide PCIe 5.0 for the graphics slot only, while LGA1851 adds PCIe 5.0 for an M.2 SSD as well. USB4 is guaranteed on AMD's X870E and X870; elsewhere, on both sides, it is a board-level extra, as is Thunderbolt, which is more common on Intel boards. Few builds need any of this yet. PCIe 5.0: do you need it explains why.
What the boards cost
We do not quote prices in guides because they move daily; the live lists on each socket and chipset page show the current picture. The general pattern is stable enough to describe. The previous-generation platforms, AM4 and LGA1700, generally have the cheapest boards, because they have been on sale longest. On the current platforms, entry-level chipsets (A620, B840, H810) cost least, mainstream B-series boards sit in the middle and X870E and Z890 boards cost the most. At the same tier, AMD and Intel boards from the same maker are usually priced similarly, so the board is rarely the deciding cost. Memory and the processor move the total more.
Where Intel does cost more is for overclockers, who must buy Z-series. For everyone else, a B-series board on either side does the job. See how much to spend on a motherboard.
Socket design and open-box boards
AM5, LGA1851 and LGA1700 are all LGA sockets: the fragile pins are in the motherboard. AM4 is the exception, with the pins on the processor. This matters if you buy an open-box board from Amazon Warehouse, because bent socket pins are the classic fault on a returned LGA board. The risk is the same for AMD and Intel on current platforms. Inspect the socket before fitting anything, and read are Amazon Warehouse motherboards worth it first.
Verdict by type of buyer
- New build, expect to upgrade the CPU later: AMD AM5 on B650 or B850.
- New build, want a specific Intel processor: LGA1851 on B860, or Z890 to overclock.
- Tightest budget, reusing DDR4: AM4 on B550, or LGA1700 on a DDR4 B760 board. Compare the total of board plus processor.
- Upgrading an existing PC: stay on the socket you have if a worthwhile processor exists for it. It nearly always costs less than moving.
- Overclocking on a mainstream board: AMD. Intel requires a Z-series board and a K-series chip.
Once the platform is settled, how to choose a motherboard takes you through the remaining steps.
Questions people ask
Are AMD motherboards cheaper than Intel motherboards?
Not consistently. At the same tier and from the same maker they are usually priced similarly. The cheapest boards of all are on the previous platforms, AM4 and LGA1700. Intel costs more only if you want to overclock, because that requires a Z-series board.
Can I use an AMD processor in an Intel motherboard?
No. AMD and Intel processors use entirely different sockets and chipsets. The processor and the board must be from the same maker and use the same socket.
Which platform will last longest?
AM5 has the strongest public commitment: AMD has said it is supported through 2027 and beyond. Intel has made no comparable statement for LGA1851, and LGA1700 and AM4 are complete, with no newer processors to come.
Do I need DDR5 for a new build?
On AM5 and LGA1851, yes, because both are DDR5 only. DDR4 remains an option on AM4 and on LGA1700 boards built for it, which can save money if you already own the memory.