Radeon RX 6600 XT and Radeon RX 6400 - video card comparison
Passmark - benchmark score Radeon RX 6600 XT vs Radeon RX 6400
Radeon RX 6600 XT
16985
Radeon RX 6400
7778
Radeon RX 6600 XT
Radeon RX 6400
Architecture
Navi / RDNA2 (2020−2022)
RDNA 2.0 (2020−2022)
GPU code name
Navi 23
Navi 24
Market segment
Desktop
Desktop
Release date
July 2021
January 2022
Interface
PCIe 4.0 x8
PCIe 4.0 x4
Supplementary power connectors
1x 8-pin
None
Boost clock speed
2589 MHz
2321 MHz
Core clock speed
1968 MHz
-
Manufacturing process technology
7 nm
6 nm
Number of transistors
11,060 million
5,400 million
Pipelines / CUDA cores
2048
768
Power consumption (TDP)
160 (TGP) Watt
53 Watt
Texture fill rate
331.4
111.4
Memory type
GDDR6
GDDR6
Maximum RAM amount
8 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
16000 MHz
16 GB/s
Memory bandwidth
256.0 GB/s
128.0 GB/s
Shared memory
-
-
Display Connectors
1x HDMI, 2x DisplayPort
1x HDMI 2.1, 1x DisplayPort 1.4a
HDMI
+
+
DirectX
12.0 Ultimate (12_2)
12 Ultimate (12_2)
OpenCL
2.1
2.2
OpenGL
4.6
4.6
Shader Model
6.5
6.6
Vulkan
1.2
1.3