Radeon RX 6400 vs R9 280X2

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Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the rankingnot rated317
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data45.60
Power efficiencyno data26.33
ArchitectureGCN 1.0 (2012−2020)RDNA 2.0 (2020−2025)
GPU code nameTahitiNavi 24
Market segmentDesktopDesktop
Release dateno data19 January 2022 (3 years ago)
Launch price (MSRP)no data$159

Cost-effectiveness evaluation

The higher the performance-to-price ratio, the better. We use the manufacturer's recommended prices for comparison.

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Performance to price scatter graph

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores2048 ×2768
Core clock speed950 MHz1923 MHz
Boost clock speed1000 MHz2321 MHz
Number of transistors4,313 million5,400 million
Manufacturing process technology28 nm6 nm
Power consumption (TDP)375 Watt53 Watt
Texture fill rate128.0 ×2111.4
Floating-point processing power4.096 TFLOPS ×23.565 TFLOPS
ROPs32 ×232
TMUs128 ×248
Ray Tracing Coresno data12

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

InterfacePCIe 3.0 x16PCIe 4.0 x4
Length315 mmno data
Width2-slot1-slot
Supplementary power connectors3x 8-pinNone

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeGDDR5GDDR6
Maximum RAM amount3 GB ×24 GB
Memory bus width384 Bit ×264 Bit
Memory clock speed1500 MHz2000 MHz
Memory bandwidth288.0 GB/s ×2128.0 GB/s
Resizable BAR-+

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display Connectors6x mini-DisplayPort 1.21x HDMI 2.1, 1x DisplayPort 1.4a
HDMI-+

API and SDK compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX12 (11_1)12 Ultimate (12_2)
Shader Model6.5 (5.1)6.7
OpenGL4.64.6
OpenCL2.1 (1.2)2.2
Vulkan1.2.1701.3

Pros & cons summary


Maximum RAM amount 3 GB 4 GB
Chip lithography 28 nm 6 nm
Power consumption (TDP) 375 Watt 53 Watt

RX 6400 has a 33.3% higher maximum VRAM amount, a 366.7% more advanced lithography process, and 607.5% lower power consumption.

We couldn't decide between Radeon R9 280X2 and Radeon RX 6400. We've got no test results to judge.

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AMD Radeon R9 280X2
Radeon R9 280X2
AMD Radeon RX 6400
Radeon RX 6400

Other comparisons

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


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