SAPPHIRE PULSE Radeon RX 6400 4GB vs SAPPHIRE PULSE Radeon RX 7800 XT 16GB. Specifications

Comparison of basic technical data of graphics cards SAPPHIRE PULSE Radeon RX 6400 4GB and SAPPHIRE PULSE Radeon RX 7800 XT 16GB, chip, information processing units.

• Based on
  AMD Radeon RX 6400 AMD Radeon RX 7800 XT
• Board Manufacturer
  Sapphire Sapphire
• Board Model
  SAPPHIRE PULSE Radeon RX 6400 4GB SAPPHIRE PULSE Radeon RX 7800 XT 16GB
• Board SKU
  11315-01-20G 11330-02-20G
• Stream Processors
  768 3840
• Compute Units
  - 60 CU (with RT+AI Accelerators)

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 19.5 Gbps Effective
• Memory Size
  4 GB 16 GB
• Memory Type
  GDDR6 GDDR6
• Memory Bus
  - 256 bit

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

• Boost Clock
  Up to 2321 MHz Up to 2430 MHz
• Game Clock
  Up to 2039 MHz Up to 2124 MHz

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

• System Power Supply
  350 W (System power requirement) 700 W (System power requirement)
• Total Board Power
  55W (Board Power) 266W Total Board Power

Connectivity and connections.

• DisplayPort Ports
  1 × DisplayPort 2 × DisplayPort
• HDMI Ports
  1 × HDMI 2 × HDMI
• PCIe Interface
  PCIe 4.0 x4 PCIe 4.0 x16

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 2.5 slot, ATX Dimension: 280(L)X 128.75(W)X 52.57 (H)mm

Comparison of interfaces and release dates for GPU SAPPHIRE PULSE Radeon RX 7800 XT 16GB and SAPPHIRE PULSE Radeon RX 6400 4GB.

• Official source
  https://www.sapphiretech.com/en/consumer/pulse-radeon-rx-6400-4g-gddr6 https://www.sapphiretech.com/en/consumer/pulse-radeon-rx-7800-xt-16g-gddr6
• Verified on
  2026-09-30 2026-09-30