NVIDIA GeForce RTX 4080 Mobile vs NVIDIA GeForce 820A
We compared two Mobile platform GPUs: 12GB VRAM GeForce RTX 4080 Mobile and 1024MB VRAM GeForce 820A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce RTX 4080 Mobile 's Advantages
Released 8 years and 10 months late
Boost Clock1665MHz
More VRAM (12GB vs 1024GB)
Larger VRAM bandwidth (432.0GB/s vs 14.40GB/s)
7328 additional rendering cores
NVIDIA GeForce 820A 's Advantages
Lower TDP (15W vs 110W)
Score
Benchmark
FP32 (float)
GeForce RTX 4080 Mobile
+8195%
24.72 TFLOPS
GeForce 820A
0.298 TFLOPS
Graphics Card
Jan 2023
Release Date
Mar 2014
GeForce 40 Mobile
Generation
GeForce 800A
Mobile
Type
Mobile
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1290 MHz
Base Clock
-
1665 MHz
Boost Clock
-
2250 MHz
Memory Clock
900 MHz
Memory
12GB
Memory Size
1024MB
GDDR6
Memory Type
DDR3
192bit
Memory Bus
64bit
432.0GB/s
Bandwidth
14.40GB/s
Render Config
-
-
-
58
SM Count
2
7424
Shading Units
96
232
TMUs
16
80
ROPs
8
232
Tensor Cores
-
58
RT Cores
-
128 KB (per SM)
L1 Cache
64 KB (per SM)
48 MB
L2 Cache
128 KB
-
-
-
Theoretical Performance
133.2 GPixel/s
Pixel Rate
3.100 GPixel/s
386.3 GTexel/s
Texture Rate
12.40 GTexel/s
24.72 TFLOPS
FP16 (half)
-
24.72 TFLOPS
FP32 (float)
297.6 GFLOPS
386.3 GFLOPS
FP64 (double)
24.80 GFLOPS
Board Design
110W
TDP
15W
-
-
-
Portable Device Dependent
Outputs
No outputs
None
Power Connectors
-
Graphics Processor
AD104
GPU Name
GF117
GN21-X9
GPU Variant
N15V-GM
Ada Lovelace
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
4 nm
Process Size
28 nm
35.8 billion
Transistors
0.585 billion
295 mm²
Die Size
116 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
1.1
1.3
Vulkan
N/A
8.9
CUDA
2.1
6.7
Shader Model
5.1
