AMD Radeon RX 6400 4GB Specs
The AMD Radeon RX 6400 4GB is based on the RDNA 2.0 6nm architecture with 768 stream processors. The base clock is 1923 MHz and it goes up to 2039 MHz for the game clock. The boost clock comes in at 2321 MHz. There are 5.4 billion transistors as well as 48 texture units and 32 ROPs.
The AMD Radeon RX 6400 4GB is a desktop graphics card from the Radeon RX 6000 series with a die size of 107 mm². The codename is Navi 24 and the fabrication process uses TSMC 6nm. There are 12 ray tracing cores with 12 compute units. There is 1MB of L2 cache additionally there is also 16MB of infinity cache.
For memory, the AMD Radeon RX 6400 4GB has 4GB of GDDR6 video memory clocked at 16000 MHz effective. The memory interface width is 64-bit and the memory bandwidth is 128 GB/s.
The theoretical performance is based on the clock speed, cores and the floating point operations per clock cycle. The half precision FP16 performance comes in at 7.130112 TFLOPS, 3.565056 TFLOPS is the single precision FP32 performance and the double precision FP64 performance is 0.222816 TFLOPS. The FP16 half precision floating point operations per clock cycle is 4, for single precision FP32 it is 2 and for double precision FP64 it is 1/8. The texture fillrate is 111.408 GT/s and the pixel fillrate is 74.272 GP/s.
The AMD Radeon RX 6400 runs DirectX version 12 and has AMD FreeSync. There is OpenCL 2.2, OpenGL 4.6 and Shader Model 6.7. Additionally there is also AMD Software: Adrenalin Edition, AMD FidelityFX Super Resolution , AMD Link, AMD Noise Suppression, AMD Radeon Super Resolution, AMD Smart Access Memory, VSR (4K), AMD Privacy View, AMD Radeon Boost, AMD Radeon Anti-Lag, AMD Radeon Image Sharpening, AMD Radeon Chill, TrueAudio Next and The Vulkan API. There is no Crossfire on the AMD Radeon RX 6400 and it is not VR ready.
The maximum resolution of this card is 7680×4320. For display output connectors, there is Display Port 1.4a and HDMI 2.1. There is no USB-c, DVI or VGA. The PCI-e interface on the AMD Radeon RX 6400 uses PCI-e 4.0 x4. No power connectors are required for this card as it uses just 53 W of power. AMD recommends a 350 W PSU.
The maximum HDMI resolution is 7680×4320 and the maximum display port resolution is 7680×4320.
This is a single slot card and is can also come in low profile variants. At release on the 19 January 2022, this card retailed for $159 USD. View more RX 6400 variants here.
