Radeon RX 6400 vs Radeon HD 6390
We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 1024MB VRAM Radeon HD 6390 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 6400 's Advantages
Released 10 years and 6 months late
Boost Clock2321MHz
More VRAM (4GB vs 1024GB)
Larger VRAM bandwidth (128.0GB/s vs 16.00GB/s)
448 additional rendering cores
Radeon HD 6390 's Advantages
Lower TDP (39W vs 53W)
Score
Benchmark
FP32 (float)
Radeon RX 6400
+912%
3565
Radeon HD 6390
352
Graphics Card
Jan 2022
Release Date
Jul 2011
Navi II
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 4.0 x4
Bus Interface
PCIe 2.0 x16
Clock Speeds
1923 MHz
Base Clock
-
2321 MHz
Boost Clock
-
2000 MHz
Memory Clock
500 MHz
Memory
4GB
Memory Size
1024MB
GDDR6
Memory Type
DDR2
64bit
Memory Bus
128bit
128.0GB/s
Bandwidth
16.00GB/s
Render Config
12
Compute Units
4
768
Shading Units
320
48
TMUs
16
32
ROPs
8
12
RT Cores
-
128 KB per Array
L1 Cache
8 KB (per CU)
1024 KB
L2 Cache
256 KB
16 MB
L3 Cache
-
Theoretical Performance
74.27 GPixel/s
Pixel Rate
4.400 GPixel/s
111.4 GTexel/s
Texture Rate
8.800 GTexel/s
7.130 TFLOPS
FP16 (half)
-
3.565 TFLOPS
FP32 (float)
352.0 GFLOPS
222.8 GFLOPS
FP64 (double)
-
Board Design
53W
TDP
39W
250 W
Suggested PSU
200 W
1x HDMI 2.1
1x DisplayPort 1.4a
Outputs
1x DVI
1x HDMI 1.3a
1x VGA
None
Power Connectors
None
Graphics Processor
Navi 24
GPU Name
Redwood
Navi 24 XL
(215-135000046)
GPU Variant
Redwood LE
RDNA 2.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
6 nm
Process Size
40 nm
5.4 billion
Transistors
0.627 billion
107 mm²
Die Size
104 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.2
OpenCL
1.2
1.3
Vulkan
N/A
6.7
Shader Model
5.0
