SAPPHIRE PULSE Radeon RX 6400 4GB vs NVIDIA L40G. Specifications

Comparison of basic technical data of graphics cards SAPPHIRE PULSE Radeon RX 6400 4GB and NVIDIA L40G, chip, information processing units.

• Based on
  AMD Radeon RX 6400 -
• Board Manufacturer
  Sapphire -
• Board Model
  SAPPHIRE PULSE Radeon RX 6400 4GB -
• Board SKU
  11315-01-20G -
• Stream Processors
  768 -
• Architecture
  - Ada Lovelace
• Execution Units
  - 18176
• GPU Chip
  - AD102
• L1 Cache
  - 128 KB
• L2 Cache
  - 48 MB
• Render Output Units
  - 192
• RT Cores
  - 142
• Texture Units
  - 568

Video memory capacity, type, bus width and bandwidth describe different properties. These values alone do not determine graphics performance.

• Memory Data Rate
  16 Gbps Effective 18 Gbps
• Memory Size
  4 GB 24 GB
• Memory Type
  GDDR6 GDDR6
• Memory Bandwidth
  - 864 GB/s
• Memory Bus
  - 384 bit
• Memory Clock
  - 2250 MHz

Published GPU clock frequencies describe different operating modes. Clock speed alone does not determine graphics performance.

• Boost Clock
  Up to 2321 MHz 2475 MHz
• Game Clock
  Up to 2039 MHz -
• Base Clock
  - 1005 MHz

Graphics card power limits and recommended system power supply describe different specifications.

• System Power Supply
  350 W (System power requirement) 700 W (PSU recommendation)
• Total Board Power
  55W (Board Power) -
• TDP
  - 300 W

Connectivity and connections.

• DisplayPort Ports
  1 × DisplayPort 3 × DisplayPort 1.4a
• HDMI Ports
  1 × HDMI 1 × HDMI 2.1
• PCIe Interface
  PCIe 4.0 x4 PCIe 4.0 x16
• Max. Displays
  - 4
• Power Connectors
  - 1x 16-pin

Technical data that is used to its full potential in computer games.

• CUDA
  - 8.9
• DirectX
  - 12.2
• Max. resolution
  - 3840 × 2160
• OpenCL
  - 3.0
• OpenGL
  - 4.6
• Shader Model
  - 6.7
• Vulkan
  - 1.3

The difference in size, weight and slot of the compared devices

• Form Factor
  1 slot, ATX Low Profile Dimension: 170(L)X 56.2(W)X 17.2(H)mm -
• Length
  - 267 mm
• Slot Size
  - Dual-slot
• Width
  - 111 mm

Comparison of interfaces and release dates for GPU NVIDIA L40G and SAPPHIRE PULSE Radeon RX 6400 4GB.

• Official source
  https://www.sapphiretech.com/en/consumer/pulse-radeon-rx-6400-4g-gddr6 -
• Verified on
  2026-09-30 -
• Process Technology
  - 4 nm
• Release date
  - Q3/2022

• FP16 (theoretical)
  - 89.97 TFLOPS (1:1)
• FP32 (theoretical)
  - 89.97 TFLOPS
• FP64 (theoretical)
  - 1,406 GFLOPS (1:64)
• Pixel Rate
  - 475.2 GPixel/s
• Texture Rate
  - 1,406 GTexel/s