Radeon HD 7870 XT and Radeon RX 6400 - video card comparison
Passmark - benchmark score Radeon HD 7870 XT vs Radeon RX 6400
Radeon HD 7870 XT
4603
Radeon RX 6400
7778
Radeon HD 7870 XT
Radeon RX 6400
Architecture
GCN 1.0 (2012−2020)
RDNA 2.0 (2020−2022)
GPU code name
Tahiti
Navi 24
Market segment
Desktop
Desktop
Release date
November 2012
January 2022
Interface
PCIe 3.0 x16
PCIe 4.0 x4
Supplementary power connectors
2x 6-pin
None
Boost clock speed
975 MHz
2321 MHz
Core clock speed
925 MHz
-
Floating-point performance
2,995 gflops
-
Manufacturing process technology
28 nm
6 nm
Number of transistors
4,313 million
5,400 million
Pipelines / CUDA cores
1536
768
Power consumption (TDP)
185 Watt
53 Watt
Texture fill rate
93.60
111.4
Memory type
GDDR5
GDDR6
Maximum RAM amount
2 GB
4 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
6000 MHz
16 GB/s
Memory bandwidth
192.0 GB/s
128.0 GB/s
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x HDMI 2.1, 1x DisplayPort 1.4a
HDMI
+
+
DirectX
12 (11_1)
12 Ultimate (12_2)
OpenCL
1.2
2.2
OpenGL
4.6
4.6
Shader Model
5.1
6.6
Vulkan
1.2.131
1.3