Radeon HD 8490 OEM vs Radeon RX 6400
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 8490 OEM and 4GB VRAM Radeon RX 6400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon HD 8490 OEM 's Advantages
Lower TDP (35W vs 53W)
Radeon RX 6400 's Advantages
Released 8 years and 6 months late
Boost Clock2321MHz
More VRAM (4GB vs 1024GB)
Larger VRAM bandwidth (128.0GB/s vs 14.40GB/s)
608 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 8490 OEM
280
Radeon RX 6400
+1173%
3565
Graphics Card
Jul 2013
Release Date
Jan 2022
Sea Islands
Generation
Navi II
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 4.0 x4
Clock Speeds
-
Base Clock
1923 MHz
-
Boost Clock
2321 MHz
900 MHz
Memory Clock
2000 MHz
Memory
1024MB
Memory Size
4GB
DDR3
Memory Type
GDDR6
64bit
Memory Bus
64bit
14.40GB/s
Bandwidth
128.0GB/s
Render Config
2
Compute Units
12
160
Shading Units
768
8
TMUs
48
4
ROPs
32
-
RT Cores
12
8 KB (per CU)
L1 Cache
128 KB per Array
128 KB
L2 Cache
1024 KB
-
L3 Cache
16 MB
Theoretical Performance
3.500 GPixel/s
Pixel Rate
74.27 GPixel/s
7.000 GTexel/s
Texture Rate
111.4 GTexel/s
-
FP16 (half)
7.130 TFLOPS
280.0 GFLOPS
FP32 (float)
3.565 TFLOPS
-
FP64 (double)
222.8 GFLOPS
Board Design
35W
TDP
53W
200 W
Suggested PSU
250 W
1x DVI
1x DisplayPort 1.1
Outputs
1x HDMI 2.1
1x DisplayPort 1.4a
None
Power Connectors
None
Graphics Processor
Caicos
GPU Name
Navi 24
Caicos XTX
GPU Variant
Navi 24 XL
(215-135000046)
TeraScale 2
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
40 nm
Process Size
6 nm
0.37 billion
Transistors
5.4 billion
67 mm²
Die Size
107 mm²
Graphics Features
11.2 (11_0)
DirectX
12 Ultimate (12_2)
4.4
OpenGL
4.6
1.2
OpenCL
2.2
N/A
Vulkan
1.3
5.0
Shader Model
6.7
