What CPUs Support AMD Socket AM3+ - All AM3+ Processor List

The Socket AM3+ platform remains one of AMD’s most recognized legacy desktop sockets. Built to power high-clocked FX processors, it provides strong multi-core performance and overclocking flexibility for gamers and enthusiasts.

Understanding AM3+ supported processors is important when upgrading or maintaining a legacy system. This socket mainly supports FX-Series AMD processors while also providing backward compatibility with select AM3 processors, like Phenom II and Athlon II (with BIOS support). From quad-core entry models to strong eight-core chips, AM3+ delivers a broad performance range.

This comprehensive guide walks you through compatibility, CPU categories, top models, and important considerations before upgrading your setup.

Why is Compatibility Important?

The compatibility of a CPU determines whether your system boots, performs effectively, and remains stable under load. AM3+ motherboards are built to handle increased power delivery in comparison with AM3, specifically for FX processors with 125W TDP ratings and, on select high-end motherboards, 220W TDP ratings.

Opting for a supported processor guarantees proper BIOS recognition, voltage regulation, and thermal control. Chipsets like AMD 970, AMD 990X, and AMD 990FX are optimized for FX processors, though not all 970 motherboards officially support 220W CPUs. One should always confirm BIOS and CPU support before installation to prevent boot failure or instability.

Categories of Socket AM3+ Compatible CPUs

AM3+ motherboards mainly support AMD FX processors while also maintaining backward compatibility with some AM3 chips. Below are the primary processor families that are compatible with this socket.

AMD FX Series Socket AM3+

The AMD FX series socket AM3+ processors are the native processors for this socket platform. With up to eight cores, these processors were broadly used for gaming, multitasking, and demanding systems.

Zambezi (Bulldozer)

Zambezi is the first-generation FX lineup based on the Bulldozer architecture. Famous models consist of the FX-4100, FX-6100, and FX-8150. These processors introduced AMD’s modular design and provided solid multi-core performance for office work, entry-level gaming, and productivity tasks.

Vishera (Piledriver)

Vishera refined Bulldozer with better efficiency and higher turbo frequencies. CPUs like FX-6300, FX-8320, FX-8350, and FX-8370 are among the most dependable AM3+ supported central processing units. They provide improved thermals and better real-world performance.

Backward Compatibility with Phenom II

AM3+ motherboards also support many Phenom II and Athlon II processors through BIOS updates. This backward compatibility enables users to upgrade their motherboard without immediately replacing their CPU, prolonging the lifespan of legacy builds.

However, AM3+ processors (FX series) are not supported on AM3 motherboards.

Best AMD AM3+ Processors

If you are asking what CPUs support AM3+, the primary options consist of the FX 4000, 6000, 8000, and 9000 series. The tables below show the strongest models grouped by processor family types.

AMD FX 8000 & 9000 Series

This series represents the top-tier models and is commonly emphasised in an AM3+ CPU compatibility chart because of their increased performance and power needs.

AMD FX 6000 Series

This series consists of balanced six-core processors that offer stronger multitasking, plus gaming performance.

AMD FX 4000 Series 

The FX 4000 series consists of entry-level quad-core processors, which are suitable for budget configurations and light or casual gaming.

Considerations When Selecting a CPU for the AM3+ Socket

Before you opt to buy an AM3+ CPU, there are several factors you need to evaluate before making that decision.

Power Delivery

Top-end FX processors need strong voltage regulator modules (VRMs) and a power supply unit (PSU) capable of handling increased wattage, especially 220W models like FX-9590 and FX-9370. Ensuring adequate power delivery helps maintain system stability, avoids throttling, and supports safe overclocking for intense workloads.

Cooling Needs

While standard 95W FX CPUs can work safely with quality air cooling, higher-performance models like FX-9590 and FX-9370 benefit from high-end air or liquid cooling. Proper cooling minimizes thermal throttling, enhances longevity, and ensures smooth performance during gameplay or multi-threaded applications.

Intended Use

The selection of the CPU depends on your intended use. FX-8350 and FX-8370 provide balanced performance with sufficient cores and clock speed for gaming. When it comes to office productivity, web browsing, or light tasks, lower-end CPUs such as FX-4300 or FX-4120 are more than enough.

BIOS Support

Always check that your motherboard supports the chosen CPU by checking the manufacturer’s CPU support list. Installing a CPU without proper BIOS compatibility may prevent the system from booting or result in reduced performance, so keeping firmware updated is necessary.

Conclusion

The Socket AM3+ socket plays a vital role in AMD’s desktop history, primarily supporting FX-Series processors designed for performance and overclocking. With models ranging from quad-core to eight-core builds, users had multiple upgrade options within the same platform. One of its greatest benefits is backward compatibility with many Phenom II and Athlon II processors, extending system longevity.

While modern platforms now provide notably enhanced efficiency and performance, AM3+ remains relevant for old builds and budget systems. Understanding compatibility, power requirements, and cooling needs guarantees smooth performance when upgrading or retaining an AM3+ setup.

FAQs

Q: What CPUs support AMD Socket AM3+?

A: AMD Socket AM3+ supports FX 4000, 6000, 8000, and 9000 series processors. It also supports select AM3 CPUs like Phenom II and Athlon II with BIOS compatibility.

Q: What is the difference between AM3 and AM3+?

A: The main difference between AM3+ and AM3 is power delivery and pin configuration. AM3+ supports higher TDP FX processors and enhanced overclocking, while AM3 motherboards do not support FX processors.

Q: How many cores do AM3+ CPUs have?

A: AM3+ processors range from 4 cores to 8 cores, depending on the model.

Q: Can I use liquid cooling on AM3+ CPUs?

A: Yes, liquid cooling is recommended for high-TDP models like FX-9370 and FX-9590 to maintain safe and stable temperatures.

Q: What is the best AM3+ CPU for gaming?

A: The FX-8350 and FX-8370 are broadly known as the best balanced options for gaming on the AM3+ socket platform.

Q: What is the strongest AM3+ processor?

A: The FX-9590 is the highest-clocked AM3+ CPU, featuring a 5.0 GHz turbo clock, though it requires substantial power delivery and cooling.

Q: Which processors are supported under AM3+ motherboard CPU compatibility?

A: AM3+ motherboard CPU compatibility consists of all FX-Series processors and several AM3-based Phenom II and Athlon II CPUs, depending on BIOS support.