AM4 socket: CPUs, chipsets and cooler fit
AM4 is AMD's desktop socket for the Ryzen processors from the 1000 series to the 5000 series. It is a pin grid array socket for processors with 1,331 pins, and the package measures 40 × 40 mm. AMD introduced the socket in 2016 with Bristol Ridge processors sold to PC makers, and it reached retail with the first Ryzen chips in March 2017.
Quick facts
Overview
Its defining feature is longevity. AMD kept the same socket through several processor generations, so a board bought for a first generation Ryzen could often be upgraded to a much newer chip with only a BIOS update. That made AM4 popular for budget builds and gradual upgrades, and it is the reason the platform stayed on shelves long after AMD moved its newest chips to AM5.
The convenience has a price, because AM4 boards span three chipset series with different capabilities and different BIOS limits. The compatibility rules below matter most when you pair a new processor with an old board.
Processor generations
| Codename | Marketing name | Years | Notes |
|---|---|---|---|
| Bristol Ridge | 7th Gen A series APUs | 2016 to 2019 | Excavator APUs such as the A12-9800 and the late dual core A6-9400 with Radeon R5 graphics. They launched the AM4 platform in 2016 on 300 series boards with DDR4-2400. |
| Summit Ridge | Ryzen 1000 series | 2017 | The first Zen processors. They launched with the 300 series chipsets and also run on 400 series boards. |
| Pinnacle Ridge | Ryzen 2000 series | 2018 | Zen+ processors launched with the 400 series chipsets. |
| Matisse | Ryzen 3000 series | 2019 | Zen 2 processors. Native on 500 series boards and supported on older boards after a BIOS update. |
| Matisse 2 | Ryzen 3000XT refresh | 2020 | Zen 2 refresh with higher boost clocks, including the 3800XT and 3900XT without a boxed cooler. They need a recent BIOS on 400 and 500 series boards. |
| Renoir | Ryzen 4000 series APUs | 2020 and later | Zen 2 APUs such as the Ryzen 7 4700G and Ryzen 5 4600G, plus the Ryzen 5 4500 and Ryzen 3 4100 CPUs built on the same die. They need a recent BIOS on 400 and 500 series boards. |
| Cezanne | Ryzen 5000 series APUs and CPUs | 2021 and later | Zen 3 APUs such as the Ryzen 7 5700G and Ryzen 5 5600G, plus the Ryzen 7 5700, Ryzen 5 5500 and GT models with disabled graphics. They need a recent BIOS on 400 and 500 series boards. |
| Picasso | Athlon 3000 series APUs | 2019 and later | Zen+ entry APUs such as the Athlon Gold 3150G and PRO 3125GE with Vega graphics. They run on 300, 400 and 500 series boards with a recent BIOS. |
| Dali | Athlon entry refresh APUs | 2020 and later | Cost-optimized Zen parts for entry desktops such as the Athlon Silver 3050GE. They run on 300, 400 and 500 series boards with a recent BIOS. |
| Vermeer | Ryzen 5000 series | 2020 and later | Zen 3 processors, including the Ryzen 5 5600X and the stacked cache X3D models. They need a recent BIOS on 300 and 400 series boards. |
| Carrizo | PRO A-series APUs on AM4 | 2018 | Excavator based PRO APUs including PRO A6-8570 and PRO A6-8570E, launched in October 2018 on Socket AM4 with DDR4. |
| Raven Ridge | Ryzen 2000 APUs with Vega | 2018 | Zen APUs with Vega 8 and Vega 11 graphics, launched in February 2018 with 2200G and 2400G on Socket AM4 with DDR4. |
Chipsets for AM4
500 series
Launched with Ryzen 3000 in 2019 and 2020.
| Chipset | Segment | Notes |
|---|---|---|
| X570 | Enthusiast | Supports PCIe 4.0 and CPU overclocking. |
| B550 | Mainstream | Supports PCIe 4.0 and CPU overclocking. |
| A520 | Entry | No CPU overclocking. |
400 series
Launched with Ryzen 2000 in 2018.
| Chipset | Segment | Notes |
|---|---|---|
| X470 | Enthusiast | Supports CPU overclocking. |
| B450 | Mainstream | Supports CPU overclocking. |
300 series
Launched with the first Ryzen processors in 2017.
| Chipset | Segment | Notes |
|---|---|---|
| X370 | Enthusiast | Supports CPU overclocking. |
| B350 | Mainstream | Supports CPU overclocking. |
| A320 | Entry | No CPU overclocking. |
Ryzen 5000 on 300 and 400 series boards
Ryzen 5000 launched in November 2020 with support limited to 500 series boards. AMD later added 400 series support, and in 2022 it announced official Ryzen 5000 support for 300 series boards, starting with a BIOS release based on AGESA 1.2.0.7. Support there depends on the board maker, which means some X370, B350 and A320 boards received the update and others did not.
A BIOS that adds Ryzen 5000 support can drop support for some older processors, because the chip that stores the BIOS has limited room. Before buying a Ryzen 5000 processor for an old board, find the board on the maker's CPU support page and read the release notes for the BIOS version that adds support.
PCIe 4.0 needs a 500 series board
Ryzen 3000 and 5000 processors can run PCIe 4.0 links, but the board has to carry the lanes and the chipset to match. X570 and B550 boards do. Older 300 and 400 series boards run PCIe 3.0, even with a newer processor installed, and so a fast PCIe 4.0 SSD works there only at the slower PCIe 3.0 speed.
Cooler mounting
AM4 uses mounting holes spaced 54 × 90 mm apart, a change from the 48 × 96 mm pattern of AM3 and AM3+. A cooler made only for those older sockets usually does not fit. The newer AM5 keeps the AM4 pattern, so a cooler that fits AM4 often carries over to an AM5 board with the right bracket.
The processor itself is a pin grid array chip, with 1,331 thin pins that can bend if the processor is dropped into the socket carelessly. Lift the retention lever, line up the marked corner of the processor with the socket, let the chip drop in by its own weight and then close the lever.
Memory
All AM4 boards use DDR4. The AMD Ryzen 5 5600X is rated for DDR4-3200, and faster kits are common with an XMP or DOCP profile switched on in the BIOS. Ryzen processors tend to perform best when memory speed and the internal fabric clock stay in step, which is why mid range kits in the DDR4-3200 to DDR4-3600 range were popular choices for this platform.
CPUs on AM4
163 processor pages in the database, newest first.
| Processor | Cores / threads | Base / boost | TDP | Launched |
|---|---|---|---|---|
| AMD Ryzen 5 5500F | 6 / 12 | 3.0 / 4.4 GHz | 65 W | Sep 2026 |
| AMD Ryzen 7 5800X3D AM4 10th Anniversary Edition | 8 / 16 | 3.4 / 4.5 GHz | 105 W | Jun 2026 |
| AMD Ryzen 5 5600F | 6 / 12 | 3.0 / 4.0 GHz | 65 W | Sep 2025 |
| AMD Ryzen 5 5500X3D | 6 / 12 | 3.0 / 4.0 GHz | 105 W | Jun 2025 |
| AMD Ryzen 3 5305G | 4 / 8 | 4.0 / 4.2 GHz | 65 W | Feb 2025 |
| AMD Ryzen 3 5305GE | 4 / 8 | 3.6 / 4.2 GHz | 35 W | Feb 2025 |
| AMD Ryzen 5 5605G | 6 / 12 | 3.9 / 4.4 GHz | 65 W | Feb 2025 |
| AMD Ryzen 5 5605GE | 6 / 12 | 3.4 / 4.4 GHz | 35 W | Feb 2025 |
| AMD Ryzen 7 5705G | 8 / 16 | 3.8 / 4.6 GHz | 65 W | Feb 2025 |
| AMD Ryzen 7 5705GE | 8 / 16 | 3.2 / 4.6 GHz | 35 W | Feb 2025 |
| AMD Ryzen 5 5600XT | 6 / 12 | 3.7 / 4.7 GHz | 65 W | Oct 2024 |
| AMD Ryzen 3 PRO 5355G | 4 / 8 | 4.0 / 4.2 GHz | 65 W | Sep 2024 |
| AMD Ryzen 3 PRO 5355GE | 4 / 8 | 3.6 / 4.2 GHz | 35 W | Sep 2024 |
| AMD Ryzen 7 PRO 5755G | 8 / 16 | 3.8 / 4.6 GHz | 65 W | Sep 2024 |
| AMD Ryzen 7 PRO 5755GE | 8 / 16 | 3.2 / 4.6 GHz | 35 W | Sep 2024 |
| AMD Ryzen 7 5800XT | 8 / 16 | 3.8 / 4.8 GHz | 105 W | Jul 2024 |
| AMD Ryzen 9 5900XT | 16 / 32 | 3.3 / 4.8 GHz | 105 W | Jul 2024 |
| AMD Ryzen 5 PRO 5655G | 6 / 12 | 3.9 / 4.4 GHz | 65 W | May 2024 |
| AMD Ryzen 5 PRO 5655GE | 6 / 12 | 3.4 / 4.4 GHz | 35 W | May 2024 |
| AMD Ryzen 7 5700X3D | 8 / 16 | 3.0 / 4.1 GHz | 105 W | Jan 2024 |
| AMD Ryzen 5 5500GT | 6 / 12 | 3.6 / 4.4 GHz | 65 W | Jan 2024 |
| AMD Ryzen 5 5600GT | 6 / 12 | 3.6 / 4.6 GHz | 65 W | Jan 2024 |
| AMD Ryzen 5 5600X3D | 6 / 12 | 3.3 / 4.4 GHz | 105 W | Jul 2023 |
| AMD Ryzen Embedded 5600E | 6 / 12 | 3.3 / 3.6 GHz | 65 W | Apr 2023 |
| AMD Ryzen Embedded 5800E | 8 / 16 | 3.4 / 3.7 GHz | 100 W | Apr 2023 |
| AMD Ryzen Embedded 5900E | 12 / 24 | 3.35 / 3.7 GHz | 105 W | Apr 2023 |
| AMD Ryzen Embedded 5950E | 16 / 32 | 3.05 / 3.4 GHz | 105 W | Apr 2023 |
| AMD Ryzen 3 PRO 4355G | 4 / 8 | 3.8 / 4.0 GHz | 65 W | Nov 2022 |
| AMD Ryzen 3 PRO 4355GE | 4 / 8 | 3.5 / 4.0 GHz | 35 W | Nov 2022 |
| AMD Ryzen 5 PRO 4655G | 6 / 12 | 3.7 / 4.2 GHz | 65 W | Nov 2022 |
| AMD Ryzen 5 PRO 4655GE | 6 / 12 | 3.3 / 4.2 GHz | 35 W | Nov 2022 |
| AMD Ryzen 7 5800X3D | 8 / 16 | 3.4 / 4.5 GHz | 105 W | Apr 2022 |
| AMD Ryzen 3 4100 | 4 / 8 | 3.8 / 4.0 GHz | 65 W | Apr 2022 |
| AMD Ryzen 5 4500 | 6 / 12 | 3.6 / 4.1 GHz | 65 W | Apr 2022 |
| AMD Ryzen 5 5500 | 6 / 12 | 3.6 / 4.2 GHz | 65 W | Apr 2022 |
| AMD Ryzen 7 5700X | 8 / 16 | 3.4 / 4.6 GHz | 65 W | Apr 2022 |
| AMD Ryzen 5 5600 | 6 / 12 | 3.5 / 4.4 GHz | 65 W | Apr 2022 |
| AMD Ryzen 7 5700 | 8 / 16 | 3.7 / 4.6 GHz | 65 W | Apr 2022 |
| AMD Ryzen 9 PRO 5945 | 12 / 24 | 3.0 / 4.7 GHz | 65 W | Apr 2022 |
| AMD Ryzen 5 PRO 5645 | 6 / 12 | 3.7 / 4.6 GHz | 65 W | 2022 |
| AMD Ryzen 7 PRO 5845 | 8 / 16 | 3.4 / 4.6 GHz | 65 W | 2022 |
| AMD Ryzen 3 PRO 5350G | 4 / 8 | 4.0 / 4.2 GHz | 65 W | Jun 2021 |
| AMD Ryzen 3 PRO 5350GE | 4 / 8 | 3.6 / 4.2 GHz | 35 W | Jun 2021 |
| AMD Ryzen 5 PRO 5650G | 6 / 12 | 3.9 / 4.4 GHz | 65 W | Jun 2021 |
| AMD Ryzen 5 PRO 5650GE | 6 / 12 | 3.4 / 4.4 GHz | 35 W | Jun 2021 |
| AMD Ryzen 7 PRO 5750G | 8 / 16 | 3.8 / 4.6 GHz | 65 W | Jun 2021 |
| AMD Ryzen 7 PRO 5750GE | 8 / 16 | 3.2 / 4.6 GHz | 35 W | Jun 2021 |
| AMD Ryzen 3 5300G | 4 / 8 | 4.0 / 4.2 GHz | 65 W | Apr 2021 |
| AMD Ryzen 3 5300GE | 4 / 8 | 3.6 / 4.2 GHz | 35 W | Apr 2021 |
| AMD Ryzen 5 5600G | 6 / 12 | 3.9 / 4.4 GHz | 65 W | Apr 2021 |
| AMD Ryzen 7 5700G | 8 / 16 | 3.8 / 4.6 GHz | 65 W | Apr 2021 |
| AMD Ryzen 7 5800 | 8 / 16 | 3.4 / 4.6 GHz | 65 W | Jan 2021 |
| AMD Ryzen 9 5900 | 12 / 24 | 3.0 / 4.7 GHz | 65 W | Jan 2021 |
| AMD Ryzen 5 5600X | 6 / 12 | 3.7 / 4.6 GHz | 65 W | Nov 2020 |
| AMD Ryzen 7 5800X | 8 / 16 | 3.8 / 4.7 GHz | 105 W | Nov 2020 |
| AMD Ryzen 9 5900X | 12 / 24 | 3.7 / 4.8 GHz | 105 W | Nov 2020 |
| AMD Ryzen 9 5950X | 16 / 32 | 3.4 / 4.9 GHz | 105 W | Nov 2020 |
| AMD Athlon Gold 3150GE | 4 / 4 | 3.3 / 3.8 GHz | 35 W | Jul 2020 |
| AMD Ryzen 5 4600G | 6 / 12 | 3.7 / 4.2 GHz | 65 W | Jul 2020 |
| AMD Ryzen 7 4700G | 8 / 16 | 3.6 / 4.4 GHz | 65 W | Jul 2020 |
| AMD Ryzen 5 3600XT | 6 / 12 | 3.8 / 4.5 GHz | 95 W | Jul 2020 |
| AMD Athlon Gold 3150G | 4 / 4 | 3.5 / 3.9 GHz | 65 W | Jul 2020 |
| AMD Athlon Gold PRO 3150G | 4 / 4 | 3.5 / 3.9 GHz | 65 W | Jul 2020 |
| AMD Athlon Gold PRO 3150GE | 4 / 4 | 3.3 / 3.8 GHz | 35 W | Jul 2020 |
| AMD Athlon Silver 3050GE | 2 / 4 | 3.4 / 3.4 GHz | 35 W | Jul 2020 |
| AMD Athlon Silver PRO 3125GE | 2 / 4 | 3.4 / 3.4 GHz | 35 W | Jul 2020 |
| AMD Ryzen 3 4300G | 4 / 8 | 3.8 / 4.0 GHz | 65 W | Jul 2020 |
| AMD Ryzen 3 4300GE | 4 / 8 | 3.5 / 4.0 GHz | 35 W | Jul 2020 |
| AMD Ryzen 3 PRO 4350G | 4 / 8 | 3.8 / 4.0 GHz | 65 W | Jul 2020 |
| AMD Ryzen 3 PRO 4350GE | 4 / 8 | 3.5 / 4.0 GHz | 35 W | Jul 2020 |
| AMD Ryzen 5 4600GE | 6 / 12 | 3.3 / 4.2 GHz | 35 W | Jul 2020 |
| AMD Ryzen 5 PRO 4650G | 6 / 12 | 3.7 / 4.2 GHz | 65 W | Jul 2020 |
| AMD Ryzen 5 PRO 4650GE | 6 / 12 | 3.3 / 4.2 GHz | 35 W | Jul 2020 |
| AMD Ryzen 7 3800XT | 8 / 16 | 3.9 / 4.7 GHz | 105 W | Jul 2020 |
| AMD Ryzen 7 4700GE | 8 / 16 | 3.1 / 4.3 GHz | 35 W | Jul 2020 |
| AMD Ryzen 7 PRO 4750G | 8 / 16 | 3.6 / 4.4 GHz | 65 W | Jul 2020 |
| AMD Ryzen 7 PRO 4750GE | 8 / 16 | 3.1 / 4.3 GHz | 35 W | Jul 2020 |
| AMD Ryzen 9 3900XT | 12 / 24 | 3.8 / 4.7 GHz | 105 W | Jul 2020 |
| AMD Ryzen 3 3100 | 4 / 8 | 3.6 / 3.9 GHz | 65 W | May 2020 |
| AMD Ryzen 3 3300X | 4 / 8 | 3.8 / 4.3 GHz | 65 W | May 2020 |
| AMD Ryzen 9 3950X | 16 / 32 | 3.5 / 4.7 GHz | 105 W | Nov 2019 |
| AMD Athlon 3000G | 2 / 4 | 3.5 GHz | 35 W | Nov 2019 |
| AMD Ryzen 5 1600AF | 6 / 12 | 3.2 / 3.6 GHz | 65 W | Oct 2019 |
| AMD Athlon PRO 300GE | 2 / 4 | 3.4 GHz | 35 W | Sep 2019 |
| AMD Ryzen 3 PRO 3200GE | 4 / 4 | 3.3 / 3.8 GHz | 35 W | Sep 2019 |
| AMD Ryzen 5 PRO 3400GE | 4 / 8 | 3.3 / 4.0 GHz | 35 W | Sep 2019 |
| AMD Ryzen 7 PRO 3700 | 8 / 16 | 3.6 / 4.4 GHz | 65 W | Sep 2019 |
| AMD Ryzen 9 3900 | 12 / 24 | 3.1 / 4.3 GHz | 65 W | Sep 2019 |
| AMD Ryzen 5 3500X | 6 / 6 | 3.6 / 4.1 GHz | 65 W | Sep 2019 |
| AMD Athlon 300GE | 2 / 4 | 3.4 GHz | 35 W | Jul 2019 |
| AMD Ryzen 3 3200G | 4 / 4 | 3.6 / 4.0 GHz | 65 W | Jul 2019 |
| AMD Ryzen 3 3200GE | 4 / 4 | 3.3 / 3.8 GHz | 35 W | Jul 2019 |
| AMD Ryzen 5 3400G | 4 / 8 | 3.7 / 4.2 GHz | 65 W | Jul 2019 |
| AMD Ryzen 5 3400GE | 4 / 8 | 3.3 / 4.0 GHz | 35 W | Jul 2019 |
| AMD Ryzen 5 3600 | 6 / 12 | 3.6 / 4.2 GHz | 65 W | Jul 2019 |
| AMD Ryzen 5 3600X | 6 / 12 | 3.8 / 4.4 GHz | 95 W | Jul 2019 |
| AMD Ryzen 7 3700X | 8 / 16 | 3.6 / 4.4 GHz | 65 W | Jul 2019 |
| AMD Ryzen 7 3800X | 8 / 16 | 3.9 / 4.5 GHz | 105 W | Jul 2019 |
| AMD Ryzen 9 3900X | 12 / 24 | 3.8 / 4.6 GHz | 105 W | Jul 2019 |
| AMD Ryzen 7 2700X 50th Anniversary | 8 / 16 | 3.7 / 4.35 GHz | 105 W | Apr 2019 |
Frequently asked questions
Which processors fit AM4?
Ryzen 1000, 2000, 3000 and 5000 desktop processors, along with the APU models that share the socket. Processors for AM5 do not fit.
Can I put a Ryzen 5000 processor in a B450 board?
Yes, after a BIOS update that adds Ryzen 5000 support. Check the board maker's CPU support list for the BIOS version.
Does AM4 support DDR5?
No. AM4 is a DDR4 only platform.
Is AM4 a pin grid array or an LGA socket?
AM4 is a pin grid array socket, so the pins are on the processor. AM5 is an LGA socket.
Can an AM4 cooler be used on AM5?
In most cases yes, because the mounting holes match. Coolers that replace the motherboard backplate do not fit AM5 boards.
Sources and verification
- Socket AM4 on Wikipedia
- AMD brings official Ryzen 5000 support to 300-series chipset motherboards (TechPowerUp)
- AMD Ryzen 5 5600X (AMD)
- PRO A6-8570 specs (Technical City)
Facts last checked against these sources on . Page last edited on .