Four-core AM4 processing with integrated Radeon Vega 11 graphics
4 cores / 8 threadsUp to 4.2GHzRadeon Vega 11AM4 + DDR4
The AMD Ryzen 5 3400G combines four Zen+ CPU cores and eight threads with integrated Radeon RX Vega 11 graphics. It runs at a 3.7GHz base clock with boost up to 4.2GHz, using the AM4 socket and DDR4 memory. This listing is the tray processor, identified by AMD as YD3400C5M4MFH.
Best For: Supported AM4 office, home and compact desktop builds that can use the processor graphics through suitable motherboard display outputs.
Before you order: A CPU cooler is not included with this tray listing. Verify the exact motherboard CPU-support list and required BIOS; AM4 alone is insufficient. To use integrated graphics, the motherboard must provide supported display outputs. Maximum boost and graphics performance depend on cooling, memory, firmware and workload.
What's in the Box
- One AMD Ryzen 5 3400G tray processor.
- CPU cooler and retail boxed package are not included.
What It Means in Practice
- Four cores and eight threads support everyday applications and multitasking; actual performance depends on the complete system.
- Use compatible dual-channel DDR4 memory and follow the motherboard population rules. Integrated graphics use shared system memory.
- Install a suitable AM4 CPU cooler before operation. Check BIOS support before assembling or upgrading.
- Use the motherboard display connectors when relying on Vega 11 graphics; a processor capability does not guarantee every connector or display mode is implemented.
What Will Not Work
- Not an AM5 or DDR5 processor.
- Not every AM4 motherboard or BIOS supports the 3400G; confirm the exact board revision and firmware.
- The 4.2GHz figure is an up-to boost specification, not a constant all-core clock.
- Tray packaging does not include the cooler shown in boxed-processor marketing.
Key Features
Four cores and eight threads
Zen+ processing with SMT, 3.7GHz base and boost up to 4.2GHz.
Integrated Vega 11 graphics
Eleven graphics cores at 1400MHz support a system without a discrete card when the motherboard provides compatible outputs.
DDR4 AM4 platform
Dual-channel DDR4 UDIMM support with official rates that depend on module count and rank.
Clear cache specification
2MB L2 plus 4MB L3 gives 6MB combined L2/L3 cache.
Technical Specifications
| Manufacturer / model |
AMD Ryzen 5 3400G |
| Catalog SKU |
YD3400C5M4MFH# |
| Manufacturer tray part |
YD3400C5M4MFH |
| Architecture / codename |
Zen+ / Picasso |
| CPU cores / threads |
4 / 8; SMT |
| Base / maximum boost |
3.7GHz / up to 4.2GHz |
| Cache L1 / L2 / L3 |
384KB / 2MB / 4MB |
| L2 + L3 total |
6MB |
| Socket |
AM4 |
| Default / configurable TDP |
65W / 45–65W |
| CPU process |
12nm FinFET |
| Die size / count |
210mm² / 1 |
| Transistors |
4.94 billion |
| Boost technology |
Precision Boost 2 |
| Unlocked multiplier |
Yes; platform/cooling dependent |
| Maximum operating temperature |
95°C Tjmax |
| Instruction set |
x86-64 |
| Extensions |
AES, AMD-V, AVX, FMA3, MMX-plus, SHA, SSE/SSE2/SSE3/SSE4.1/SSE4.2/SSE4A, SSSE3 |
| System memory |
DDR4 UDIMM; 2 channels; up to 64GB |
| Official memory rate by population |
2×1R:2933; 2×2R:2667; 4×1R:2133; 4×2R:1866MT/s |
| ECC support |
Requires motherboard support; verify exact board/BIOS |
| PCI Express |
PCIe 3.0; native lanes 20 total / 16 usable |
| Native USB |
4 × USB3.2 Gen1 5Gbps; motherboard implementation dependent |
| Integrated graphics |
Radeon RX Vega 11 |
| GPU cores / shaders |
11 / 704 |
| Graphics clock |
1400MHz |
| Graphics memory |
Shared system memory; AMD lists GPU maximum 2GB |
| Graphics APIs |
DirectX12; OpenGL4.6; OpenCL2.2; WDDM2.7, driver dependent |
| Display engine capability |
DP1.4a, HDMI2.0, HDCP2.2; actual connectors depend on motherboard |
| Display count / sync |
Up to 3 displays; AMD FreeSync, subject to platform/display support |
| DisplayPort maximum SDR modes |
3840×2160@60Hz;3440×1440@144Hz;2560×1440@180Hz;1920×1080@240Hz; platform dependent |
| DisplayPort maximum HDR modes |
3840×2160@60Hz;3440×1440@60Hz;2560×1440@60Hz;1920×1080@120Hz; platform dependent |
| Security |
AMD Enhanced Virus Protection / NX bit |
| Launch date |
7 July 2019 |
| Package |
One tray processor; no retail box or CPU cooler |
| Condition |
New |
Frequently Asked Questions
Does it require a separate graphics card?
It has integrated Radeon RX Vega 11 graphics. A separate card is optional if the motherboard supplies compatible display outputs for your needs.
Is a cooler included?
No. This tray listing requires a separately provided compatible AM4 cooler.
Does 6MB mean 6MB of L3 cache?
No. It is 2MB L2 plus 4MB L3 cache.
Will every AM4 motherboard work?
No. Check the exact motherboard CPU-support list, board revision and required BIOS.
What DDR4 memory speed is supported?
AMD lists DDR4-2933 for two single-rank modules, with lower official rates for other module/rank populations. Check the motherboard memory support list.
Singular Expert Insight
For this processor, motherboard firmware and memory configuration matter as much as the socket. Check the CPU-support list first, then plan a suitable cooler and dual-channel memory. The integrated GPU can simplify a basic desktop, but its performance and available display outputs depend on the rest of the system.
Buyer’s Guide
✓ Buy it if Your motherboard explicitly supports the Ryzen 5 3400G and you want a four-core desktop processor with integrated graphics.
✕ Skip it if You require an AM5/DDR5 platform, expect a boxed cooler or have not verified motherboard firmware support.
→ Also consider An AM4 cooler, supported DDR4 modules and the motherboard display connections needed for your monitors.