NVIDIA GeForce RTX 5080 Mobile vs AMD Radeon E8870
GPU Specs Compare
Graphics Card
Release Date
Apr 2025
Sep 2015
Generation
GeForce 50 Mobile
Embedded
Type
Mobile
Mobile
Bus Interface
PCIe 5.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
975 MHz
-
Boost Clock
1500 MHz
-
Memory Clock
1750 MHz
1500 MHz
Memory
Memory Size
16GB
4GB
Memory Type
GDDR7
GDDR5
Memory Bus
256bit
128bit
Bandwidth
896.0GB/s
96.00GB/s
Render Config
SM Count
60
-
Shading Units
7680
768
TMUs
240
48
ROPs
96
16
Tensor Cores
240
-
RT Cores
60
-
L1 Cache
128 KB (per SM)
16 KB (per CU)
L2 Cache
64 MB
256 KB
Compute Units
-
12
Theoretical Performance
Pixel Rate
144.0 GPixel/s
16.00 GPixel/s
Texture Rate
360.0 GTexel/s
48.00 GTexel/s
FP16 (half)
23.04 TFLOPS
-
FP32 (float)
23.04 TFLOPS
1.536 TFLOPS
FP64 (double)
360.0 GFLOPS
96.00 GFLOPS
Graphics Processor
GPU Name
GB203
Saturn
Architecture
Blackwell 2.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
45.6 billion
2.08 billion
Die Size
378 mm²
160 mm²
GPU Variant
-
Saturn PRO
Board Design
TDP
80W
75W
Suggested PSU
550 W
-
Outputs
Portable Device Dependent
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
3.0
2.0
Vulkan
1.4
1.2
CUDA
12.0
-
Shader Model
6.8
6.3