NVIDIA GeForce RTX 5080 Mobile vs NVIDIA GeForce GTX 870M
GPU Specs Compare
Graphics Card
Release Date
Apr 2025
Mar 2014
Generation
GeForce 50 Mobile
GeForce 800M
Type
Mobile
Mobile
Bus Interface
PCIe 5.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
975 MHz
941 MHz
Boost Clock
1500 MHz
967 MHz
Memory Clock
1750 MHz
1250 MHz
Memory
Memory Size
16GB
3GB
Memory Type
GDDR7
GDDR5
Memory Bus
256bit
192bit
Bandwidth
896.0GB/s
120.0GB/s
Render Config
SM Count
60
-
Shading Units
7680
1344
TMUs
240
112
ROPs
96
24
Tensor Cores
240
-
RT Cores
60
-
L1 Cache
128 KB (per SM)
16 KB (per SMX)
L2 Cache
64 MB
384 KB
Theoretical Performance
Pixel Rate
144.0 GPixel/s
27.08 GPixel/s
Texture Rate
360.0 GTexel/s
108.3 GTexel/s
FP16 (half)
23.04 TFLOPS
-
FP32 (float)
23.04 TFLOPS
2.599 TFLOPS
FP64 (double)
360.0 GFLOPS
108.3 GFLOPS
Graphics Processor
GPU Name
GB203
GK104
Architecture
Blackwell 2.0
Kepler
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
45.6 billion
3.54 billion
Die Size
378 mm²
294 mm²
GPU Variant
-
N15E-GT-A2
Board Design
TDP
80W
100W
Suggested PSU
550 W
-
Outputs
Portable Device Dependent
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.4
1.1
CUDA
12.0
3.0
Shader Model
6.8
5.1