NVIDIA GeForce RTX 3080 Ti Mobile vs AMD Radeon R9 M485X
We compared two Mobile platform GPUs: 16GB VRAM GeForce RTX 3080 Ti Mobile and 8GB VRAM Radeon R9 M485X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce RTX 3080 Ti Mobile 's Advantages
Released 5 years and 8 months late
Boost Clock1260MHz
More VRAM (16GB vs 8GB)
Larger VRAM bandwidth (512.0GB/s vs 160.0GB/s)
5376 additional rendering cores
Lower TDP (115W vs 250W)
Score
Benchmark
FP32 (float)
GeForce RTX 3080 Ti Mobile
+531%
18.71 TFLOPS
Radeon R9 M485X
2.961 TFLOPS
Graphics Card
Jan 2022
Release Date
May 2016
GeForce 30 Mobile
Generation
Crystal System
Mobile
Type
Mobile
PCIe 4.0 x16
Bus Interface
MXM-B (3.0)
Clock Speeds
810 MHz
Base Clock
-
1260 MHz
Boost Clock
-
2000 MHz
Memory Clock
1250 MHz
Memory
16GB
Memory Size
8GB
GDDR6
Memory Type
GDDR5
256bit
Memory Bus
256bit
512.0GB/s
Bandwidth
160.0GB/s
Render Config
-
Compute Units
32
58
SM Count
-
7424
Shading Units
2048
232
TMUs
128
96
ROPs
32
232
Tensor Cores
-
58
RT Cores
-
128 KB (per SM)
L1 Cache
16 KB (per CU)
4 MB
L2 Cache
512 KB
-
-
-
Theoretical Performance
121.0 GPixel/s
Pixel Rate
23.14 GPixel/s
292.3 GTexel/s
Texture Rate
92.54 GTexel/s
18.71 TFLOPS
FP16 (half)
2.961 TFLOPS
18.71 TFLOPS
FP32 (float)
2.961 TFLOPS
292.3 GFLOPS
FP64 (double)
185.1 GFLOPS
Board Design
115W
TDP
250W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
None
Graphics Processor
GA103S
GPU Name
Amethyst
GN20-E8-A1
GPU Variant
Amethyst XT
Ampere
Architecture
GCN 3.0
Samsung
Foundry
TSMC
8 nm
Process Size
28 nm
Unknown
Transistors
5 billion
496 mm²
Die Size
366 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 (12_0)
4.6
OpenGL
4.6
3.0
OpenCL
2.0
1.3
Vulkan
1.2
8.6
CUDA
-
6.5
Shader Model
6.3
