NVIDIA GeForce GT 820M vs NVIDIA GeForce RTX 4090 Mobile
We compared two Mobile platform GPUs: 1024MB VRAM GeForce GT 820M and 16GB VRAM GeForce RTX 4090 Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 820M 's Advantages
Lower TDP (15W vs 120W)
NVIDIA GeForce RTX 4090 Mobile 's Advantages
Released 9 years and 2 months late
Boost Clock1695MHz
More VRAM (16GB vs 1024GB)
Larger VRAM bandwidth (576.0GB/s vs 14.40GB/s)
9632 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 820M
0.298 TFLOPS
GeForce RTX 4090 Mobile
+10967%
32.98 TFLOPS
Graphics Card
Nov 2013
Release Date
Jan 2023
GeForce 800M
Generation
GeForce 40 Mobile
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
1335 MHz
-
Boost Clock
1695 MHz
900 MHz
Memory Clock
2250 MHz
Memory
1024MB
Memory Size
16GB
DDR3
Memory Type
GDDR6
64bit
Memory Bus
256bit
14.40GB/s
Bandwidth
576.0GB/s
Render Config
-
-
-
2
SM Count
76
96
Shading Units
9728
16
TMUs
304
8
ROPs
112
-
Tensor Cores
304
-
RT Cores
76
64 KB (per SM)
L1 Cache
128 KB (per SM)
128 KB
L2 Cache
64 MB
-
-
-
Theoretical Performance
3.100 GPixel/s
Pixel Rate
189.8 GPixel/s
12.40 GTexel/s
Texture Rate
515.3 GTexel/s
-
FP16 (half)
32.98 TFLOPS
297.6 GFLOPS
FP32 (float)
32.98 TFLOPS
24.80 GFLOPS
FP64 (double)
515.3 GFLOPS
Board Design
15W
TDP
120W
-
-
-
No outputs
Outputs
Portable Device Dependent
-
Power Connectors
None
Graphics Processor
GF117
GPU Name
AD103
N15V-GM
GPU Variant
GN21-X11
Fermi 2.0
Architecture
Ada Lovelace
TSMC
Foundry
TSMC
28 nm
Process Size
5 nm
0.585 billion
Transistors
45.9 billion
116 mm²
Die Size
379 mm²
Graphics Features
12 (11_0)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
1.1
OpenCL
3.0
N/A
Vulkan
1.3
2.1
CUDA
8.9
5.1
Shader Model
6.8
