Home GPU Comparison NVIDIA GeForce RTX 4090 Mobile vs NVIDIA GeForce 945A

NVIDIA GeForce RTX 4090 Mobile vs NVIDIA GeForce 945A

We compared two Mobile platform GPUs: 16GB VRAM GeForce RTX 4090 Mobile and 1024MB VRAM GeForce 945A 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 7 years and 10 months late
Boost Clock has increased by 43% (1695MHz vs 1189MHz)
More VRAM (16GB vs 1GB)
Larger VRAM bandwidth (576.0GB/s vs 40.10GB/s)
9344 additional rendering cores
NVIDIA GeForce 945A 's Advantages
Lower TDP (33W vs 120W)

Score

Benchmark

FP32 (float)
GeForce RTX 4090 Mobile +3512%
32.98 TFLOPS
GeForce 945A
0.913 TFLOPS
VS

Graphics Card

Jan 2023
Release Date
Mar 2015
GeForce 40 Mobile
Generation
GeForce 900A
Mobile
Type
Mobile
PCIe 4.0 x16
Bus Interface
PCIe 3.0 x8

Clock Speeds

1335 MHz
Base Clock
1006 MHz
1695 MHz
Boost Clock
1189 MHz
2250 MHz
Memory Clock
1253 MHz

Memory

16GB
Memory Size
1024MB
GDDR6
Memory Type
GDDR5
256bit
Memory Bus
64bit
576.0GB/s
Bandwidth
40.10GB/s

Render Config

76
SM Count
-
-
Compute Units
-
9728
Shading Units
384
304
TMUs
24
112
ROPs
8
304
Tensor Cores
-
76
RT Cores
-
128 KB (per SM)
L1 Cache
64 KB (per SMM)
64 MB
L2 Cache
1024 KB

Theoretical Performance

189.8 GPixel/s
Pixel Rate
9.512 GPixel/s
515.3 GTexel/s
Texture Rate
28.54 GTexel/s
32.98 TFLOPS
FP16 (half)
-
32.98 TFLOPS
FP32 (float)
913.2 GFLOPS
515.3 GFLOPS
FP64 (double)
28.54 GFLOPS

Graphics Processor

AD103
GPU Name
GM108
GN21-X11
GPU Variant
-
Ada Lovelace
Architecture
Maxwell
TSMC
Foundry
TSMC
4 nm
Process Size
28 nm
45.9 billion
Transistors
Unknown
379 mm²
Die Size
Unknown

Board Design

120W
TDP
33W
-
Suggested PSU
-
Portable Device Dependent
Outputs
No outputs
None
Power Connectors
-

Graphics Features

12 Ultimate (12_2)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.3
Vulkan
1.3
8.9
CUDA
5.0
6.7
Shader Model
5.1

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