Radeon HD 6790 and Radeon RX 6400 - video card comparison
Passmark - benchmark score Radeon HD 6790 vs Radeon RX 6400
Radeon HD 6790
1664
Radeon RX 6400
7778
Radeon HD 6790
Radeon RX 6400
Architecture
Terascale 2 (2009−2015)
RDNA 2.0 (2020−2022)
GPU code name
Barts
Navi 24
Market segment
Desktop
Desktop
Release date
April 2011
January 2022
Interface
PCIe 2.0 x16
PCIe 4.0 x4
Supplementary power connectors
2x 6-pin
None
Boost clock speed
-
2321 MHz
Core clock speed
840 MHz
-
Floating-point performance
1,344.0 gflops
-
Manufacturing process technology
40 nm
6 nm
Number of transistors
1,700 million
5,400 million
Pipelines / CUDA cores
800
768
Power consumption (TDP)
150 Watt
53 Watt
Texture fill rate
33.60
111.4
Memory type
GDDR5
GDDR6
Maximum RAM amount
1 GB
4 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1050 MHz
16 GB/s
Memory bandwidth
134.4 GB/s
128.0 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x HDMI 2.1, 1x DisplayPort 1.4a
HDMI
+
+
DirectX
11.2 (11_0)
12 Ultimate (12_2)
OpenCL
1.2
2.2
OpenGL
4.4
4.6
Shader Model
5.0
6.6
Vulkan
N/A
1.3