NVIDIA GeForce RTX 5070 Mobile vs ATI Mobility Radeon HD 3870 X2
We compared two Mobile platform GPUs: 8GB VRAM GeForce RTX 5070 Mobile and 512MB VRAM Mobility Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce RTX 5070 Mobile 's Advantages
Released 16 years and 7 months late
Boost Clock1425MHz
More VRAM (8GB vs 512GB)
Larger VRAM bandwidth (384.0GB/s vs 54.40GB/s)
4288 additional rendering cores
Lower TDP (50W vs 110W)
Score
Benchmark
FP32 (float)
GeForce RTX 5070 Mobile
+3011%
13.13 TFLOPS
Mobility Radeon HD 3870 X2
0.422 TFLOPS
Graphics Card
Apr 2025
Release Date
Sep 2008
GeForce 50 Mobile
Generation
M8x
Mobile
Type
Mobile
PCIe 5.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
907 MHz
Base Clock
-
1425 MHz
Boost Clock
-
1500 MHz
Memory Clock
850 MHz
Memory
8GB
Memory Size
512MB
GDDR7
Memory Type
GDDR3
128bit
Memory Bus
256bit
384.0GB/s
Bandwidth
54.40GB/s
Render Config
-
Compute Units
4
36
SM Count
-
4608
Shading Units
320
144
TMUs
16
48
ROPs
16
144
Tensor Cores
-
36
RT Cores
-
128 KB (per SM)
L1 Cache
-
32 MB
L2 Cache
256 KB
-
-
-
Theoretical Performance
68.40 GPixel/s
Pixel Rate
10.56 GPixel/s
205.2 GTexel/s
Texture Rate
10.56 GTexel/s
13.13 TFLOPS
FP16 (half)
-
13.13 TFLOPS
FP32 (float)
422.4 GFLOPS
205.2 GFLOPS
FP64 (double)
84.48 GFLOPS
Board Design
50W
TDP
110W
300 W
Suggested PSU
-
Portable Device Dependent
Outputs
No outputs
None
Power Connectors
-
Graphics Processor
GB206
GPU Name
M88
GB206
GPU Variant
-
Blackwell 2.0
Architecture
TeraScale
TSMC
Foundry
TSMC
5 nm
Process Size
55 nm
21.9 billion
Transistors
0.666 billion
181 mm²
Die Size
192 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
3.0
OpenCL
N/A
1.4
Vulkan
N/A
12.0
CUDA
-
6.8
Shader Model
4.1
