Radeon RX 6400 vs R7 340 OEM

Primary details

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

Place in the rankingnot rated279
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data53.99
Power efficiencyno data25.60
ArchitectureGCN 1.0 (2011−2020)RDNA 2.0 (2020−2024)
GPU code nameOlandNavi 24
Market segmentDesktopDesktop
Release date5 May 2015 (9 years ago)19 January 2022 (2 years ago)
Launch price (MSRP)no data$159

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

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 cores384768
Core clock speed730 MHz1923 MHz
Boost clock speed780 MHz2321 MHz
Number of transistors950 million5,400 million
Manufacturing process technology28 nm6 nm
Power consumption (TDP)50 Watt53 Watt
Texture fill rate18.72111.4
Floating-point processing power0.599 TFLOPS3.565 TFLOPS
ROPs832
TMUs2448
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 x8PCIe 4.0 x4
Width1-slot1-slot
Supplementary power connectorsNoneNone

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 typeDDR3GDDR6
Maximum RAM amount2 GB4 GB
Memory bus width128 Bit64 Bit
Memory clock speed900 MHz2000 MHz
Memory bandwidth28.8 GB/s128.0 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors1x DVI, 1x HDMI, 1x VGA1x HDMI 2.1, 1x DisplayPort 1.4a
HDMI++

API compatibility

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

DirectX12 (11_1)12 Ultimate (12_2)
Shader Model5.16.7
OpenGL4.64.6
OpenCL1.22.2
Vulkan1.2.1311.3

Pros & cons summary


Recency 5 May 2015 19 January 2022
Maximum RAM amount 2 GB 4 GB
Chip lithography 28 nm 6 nm
Power consumption (TDP) 50 Watt 53 Watt

R7 340 OEM has 6% lower power consumption.

RX 6400, on the other hand, has an age advantage of 6 years, a 100% higher maximum VRAM amount, and a 366.7% more advanced lithography process.

We couldn't decide between Radeon R7 340 OEM and Radeon RX 6400. We've got no test results to judge.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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AMD Radeon R7 340 OEM
Radeon R7 340 OEM
AMD Radeon RX 6400
Radeon RX 6400

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Community ratings

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