AMD Radeon RX 6400 vs AMD Radeon HD 8950 OEM
GPU Specs Compare
Graphics Card
Release Date
Jan 2022
Jan 2013
Generation
Navi II
Sea Islands
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x4
PCIe 3.0 x16
Clock Speeds
Base Clock
1923 MHz
850 MHz
Boost Clock
2321 MHz
925 MHz
Memory Clock
2000 MHz
1250 MHz
Memory
Memory Size
4GB
3GB
Memory Type
GDDR6
GDDR5
Memory Bus
64bit
384bit
Bandwidth
128.0GB/s
240.0GB/s
Render Config
Compute Units
12
28
Shading Units
768
1792
TMUs
48
112
ROPs
32
32
RT Cores
12
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
1024 KB
768 KB
L3 Cache
16 MB
-
Theoretical Performance
Pixel Rate
74.27 GPixel/s
29.60 GPixel/s
Texture Rate
111.4 GTexel/s
103.6 GTexel/s
FP16 (half)
7.130 TFLOPS
-
FP32 (float)
3.565 TFLOPS
3.315 TFLOPS
FP64 (double)
222.8 GFLOPS
828.8 GFLOPS
Graphics Processor
GPU Name
Navi 24
Tahiti
GPU Variant
Navi 24 XL(215-135000046)
Tahiti PRO(215-0821056)
Architecture
RDNA 2.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
6 nm
28 nm
Transistors
5.4 billion
4.313 billion
Die Size
107 mm²
352 mm²
Board Design
TDP
53W
200W
Suggested PSU
250 W
550 W
Outputs
1x HDMI 2.11x DisplayPort 1.4a
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
None
2x 6-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.2
1.2
Vulkan
1.3
1.2
Shader Model
6.7
5.1