Radeon HD 7950 and Radeon RX 6400 - video card comparison
Passmark - benchmark score Radeon HD 7950 vs Radeon RX 6400
Radeon HD 7950
4907
Radeon RX 6400
7776
Radeon HD 7950
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
January 2012
January 2022
Bus support
PCIe 3.0 x16
-
Interface
PCIe 3.0 x16
PCIe 4.0 x4
Supplementary power connectors
2x 6-pin
None
Boost clock speed
1250 MHz
2321 MHz
Compute units
28
-
Floating-point performance
2,867 gflops
-
Manufacturing process technology
28 nm
6 nm
Number of transistors
4,313 million
5,400 million
Pipelines / CUDA cores
1792
768
Power consumption (TDP)
200 Watt
53 Watt
Texture fill rate
89.60
111.4
Memory type
GDDR5
GDDR6
Maximum RAM amount
3 GB
4 GB
Memory bus width
384 Bit
64 Bit
Memory clock speed
1250 MHz
16 GB/s
Memory bandwidth
240 GB/s
128.0 GB/s
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x HDMI 2.1, 1x DisplayPort 1.4a
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
12 Ultimate (12_2)
Mantle
-
-
OpenCL
1.2
2.2
OpenGL
4.6
4.6
Shader Model
5.1
6.6
Vulkan
-
1.3
AppAcceleration
+
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
-
-
ZeroCore
+
-