GeForce RTX 4070 Mobile vs GeForce GTX 870M
We compared two Mobile platform GPUs: 8GB VRAM GeForce RTX 4070 Mobile and 3GB VRAM GeForce GTX 870M 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 Clock has increased by 75% (1695MHz vs 967MHz)
More VRAM (8GB vs 3GB)
Larger VRAM bandwidth (256.0GB/s vs 120.0GB/s)
3264 additional rendering cores
GeForce GTX 870M 's Advantages
Lower TDP (100W vs 115W)
Score
Benchmark
FP32 (float)
GeForce RTX 4070 Mobile
+501%
15620
GeForce GTX 870M
2599
Graphics Card
Jan 2023
Release Date
Mar 2014
GeForce 40 Mobile
Generation
GeForce 800M
Mobile
Type
Mobile
PCIe 4.0 x8
Bus Interface
MXM-B (3.0)
Clock Speeds
1395 MHz
Base Clock
941 MHz
1695 MHz
Boost Clock
967 MHz
2000 MHz
Memory Clock
1250 MHz
Memory
8GB
Memory Size
3GB
GDDR6
Memory Type
GDDR5
128bit
Memory Bus
192bit
256.0GB/s
Bandwidth
120.0GB/s
Render Config
36
SM Count
-
4608
Shading Units
1344
144
TMUs
112
48
ROPs
24
144
Tensor Cores
-
36
RT Cores
-
128 KB (per SM)
L1 Cache
16 KB (per SMX)
32 MB
L2 Cache
384 KB
Theoretical Performance
81.36 GPixel/s
Pixel Rate
27.08 GPixel/s
244.1 GTexel/s
Texture Rate
108.3 GTexel/s
15.62 TFLOPS
FP16 (half)
-
15.62 TFLOPS
FP32 (float)
2.599 TFLOPS
244.1 GFLOPS
FP64 (double)
108.3 GFLOPS
Board Design
115W
TDP
100W
Portable Device Dependent
Outputs
No outputs
None
Power Connectors
None
Graphics Processor
AD106
GPU Name
GK104
GN21-X6
GPU Variant
N15E-GT-A2
Ada Lovelace
Architecture
Kepler
TSMC
Foundry
TSMC
5 nm
Process Size
28 nm
22.9 billion
Transistors
3.54 billion
188 mm²
Die Size
294 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.3
Vulkan
1.1
8.9
CUDA
3.0
6.8
Shader Model
5.1
