GeForce RTX 4070 Mobile vs GeForce 820A
We compared two Mobile platform GPUs: 8GB VRAM GeForce RTX 4070 Mobile and 1024MB VRAM GeForce 820A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce RTX 4070 Mobile 's Advantages
Released 8 years and 10 months late
Boost Clock1695MHz
More VRAM (8GB vs 1024GB)
Larger VRAM bandwidth (256.0GB/s vs 14.40GB/s)
4512 additional rendering cores
GeForce 820A 's Advantages
Lower TDP (15W vs 115W)
Score
Benchmark
FP32 (float)
GeForce RTX 4070 Mobile
+5141%
15620
GeForce 820A
298
Graphics Card
Jan 2023
Release Date
Mar 2014
GeForce 40 Mobile
Generation
GeForce 800A
Mobile
Type
Mobile
PCIe 4.0 x8
Bus Interface
PCIe 2.0 x16
Clock Speeds
1395 MHz
Base Clock
-
1695 MHz
Boost Clock
-
2000 MHz
Memory Clock
900 MHz
Memory
8GB
Memory Size
1024MB
GDDR6
Memory Type
DDR3
128bit
Memory Bus
64bit
256.0GB/s
Bandwidth
14.40GB/s
Render Config
36
SM Count
2
4608
Shading Units
96
144
TMUs
16
48
ROPs
8
144
Tensor Cores
-
36
RT Cores
-
128 KB (per SM)
L1 Cache
64 KB (per SM)
32 MB
L2 Cache
128 KB
Theoretical Performance
81.36 GPixel/s
Pixel Rate
3.100 GPixel/s
244.1 GTexel/s
Texture Rate
12.40 GTexel/s
15.62 TFLOPS
FP16 (half)
-
15.62 TFLOPS
FP32 (float)
297.6 GFLOPS
244.1 GFLOPS
FP64 (double)
24.80 GFLOPS
Board Design
115W
TDP
15W
Portable Device Dependent
Outputs
No outputs
None
Power Connectors
-
Graphics Processor
AD106
GPU Name
GF117
GN21-X6
GPU Variant
N15V-GM
Ada Lovelace
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
5 nm
Process Size
28 nm
22.9 billion
Transistors
0.585 billion
188 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
6.8
Shader Model
5.1
