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GPU Comparison
NVIDIA GeForce RTX 4090 Mobile vs AMD Radeon HD 6490M
NVIDIA GeForce RTX 4090 Mobile vs AMD Radeon HD 6490M
VS
NVIDIA GeForce RTX 4090 Mobile
AMD Radeon HD 6490M
We compared two Mobile platform GPUs: 16GB VRAM GeForce RTX 4090 Mobile and 512MB VRAM Radeon HD 6490M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce RTX 4090 Mobile 's Advantages
Released 12 years late
Boost Clock1695MHz
Larger VRAM bandwidth (576.0GB/s vs 25.60GB/s)
9568 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce RTX 4090 Mobile
+12782%
32.98 TFLOPS
Radeon HD 6490M
0.256 TFLOPS
GeForce RTX 4090 Mobile
VS
Radeon HD 6490M
Graphics Card
Jan 2023
Release Date
Jan 2011
GeForce 40 Mobile
Generation
Vancouver
Mobile
Type
Mobile
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1335 MHz
Base Clock
-
1695 MHz
Boost Clock
-
2250 MHz
Memory Clock
800 MHz
Memory
16GB
Memory Size
512MB
GDDR6
Memory Type
GDDR5
256bit
Memory Bus
64bit
576.0GB/s
Bandwidth
25.60GB/s
Render Config
76
SM Count
-
-
Compute Units
2
9728
Shading Units
160
304
TMUs
8
112
ROPs
4
304
Tensor Cores
-
76
RT Cores
-
128 KB (per SM)
L1 Cache
8 KB (per CU)
64 MB
L2 Cache
128 KB
Theoretical Performance
189.8 GPixel/s
Pixel Rate
3.200 GPixel/s
515.3 GTexel/s
Texture Rate
6.400 GTexel/s
32.98 TFLOPS
FP16 (half)
-
32.98 TFLOPS
FP32 (float)
256.0 GFLOPS
515.3 GFLOPS
FP64 (double)
-
Graphics Processor
AD103
GPU Name
Seymour
GN21-X11
GPU Variant
Seymour XTX S3 (216-0809024)
Ada Lovelace
Architecture
TeraScale 2
TSMC
Foundry
TSMC
4 nm
Process Size
40 nm
45.9 billion
Transistors
0.37 billion
379 mm²
Die Size
67 mm²
Board Design
120W
TDP
Unknown
-
Suggested PSU
-
Portable Device Dependent
Outputs
Portable Device Dependent
None
Power Connectors
-
Graphics Features
12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
3.0
OpenCL
1.2
1.3
Vulkan
N/A
8.9
CUDA
-
6.7
Shader Model
5.0
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