Home GPU Comparison NVIDIA GeForce RTX 4070 Mobile vs AMD Radeon HD 7870M

NVIDIA GeForce RTX 4070 Mobile vs AMD Radeon HD 7870M

We compared two Mobile platform GPUs: 8GB VRAM GeForce RTX 4070 Mobile and 2GB VRAM Radeon HD 7870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 4070 Mobile 's Advantages
Released 10 years and 9 months late
Boost Clock1695MHz
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (256.0GB/s vs 64.00GB/s)
3968 additional rendering cores
AMD Radeon HD 7870M 's Advantages
Lower TDP (45W vs 115W)

Score

Benchmark

FP32 (float)
GeForce RTX 4070 Mobile +1425%
15.62 TFLOPS
Radeon HD 7870M
1.024 TFLOPS
VS

Graphics Card

Jan 2023
Release Date
Apr 2012
GeForce 40 Mobile
Generation
London
Mobile
Type
Mobile
PCIe 4.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

1395 MHz
Base Clock
-
1695 MHz
Boost Clock
-
2000 MHz
Memory Clock
1000 MHz

Memory

8GB
Memory Size
2GB
GDDR6
Memory Type
GDDR5
128bit
Memory Bus
128bit
256.0GB/s
Bandwidth
64.00GB/s

Render Config

-
Compute Units
10
36
SM Count
-
4608
Shading Units
640
144
TMUs
40
48
ROPs
16
144
Tensor Cores
-
36
RT Cores
-
128 KB (per SM)
L1 Cache
16 KB (per CU)
32 MB
L2 Cache
256 KB
-
-
-

Theoretical Performance

81.36 GPixel/s
Pixel Rate
12.80 GPixel/s
244.1 GTexel/s
Texture Rate
32.00 GTexel/s
15.62 TFLOPS
FP16 (half)
-
15.62 TFLOPS
FP32 (float)
1024 GFLOPS
244.1 GFLOPS
FP64 (double)
64.00 GFLOPS

Board Design

115W
TDP
45W
-
-
-
Portable Device Dependent
Outputs
No outputs
None
Power Connectors
-

Graphics Processor

AD106
GPU Name
Heathrow
GN21-X6
GPU Variant
Heathrow XT (216-0835033)
Ada Lovelace
Architecture
GCN 1.0
TSMC
Foundry
TSMC
4 nm
Process Size
28 nm
Unknown
Transistors
1.5 billion
190 mm²
Die Size
123 mm²

Graphics Features

12 Ultimate (12_2)
DirectX
12 (11_1)
4.6
OpenGL
4.6
3.0
OpenCL
1.2
1.3
Vulkan
1.2
8.9
CUDA
-
6.7
Shader Model
5.1

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