Home GPU Comparison AMD Radeon HD 7630M vs ATI Mobility Radeon HD 3870

AMD Radeon HD 7630M vs ATI Mobility Radeon HD 3870

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 7630M and 512MB VRAM Mobility Radeon HD 3870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7630M 's Advantages
Released 3 years and 7 months late
More VRAM (1024GB vs 512GB)
160 additional rendering cores
Lower TDP (20W vs 55W)
ATI Mobility Radeon HD 3870 's Advantages
Larger VRAM bandwidth (54.40GB/s vs 25.60GB/s)

Score

Benchmark

FP32 (float)
Radeon HD 7630M +2%
0.432 TFLOPS
Mobility Radeon HD 3870
0.422 TFLOPS
VS

Graphics Card

Jan 2012
Release Date
Jun 2008
London
Generation
M8x
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

-
-
-
-
-
-
800 MHz
Memory Clock
850 MHz

Memory

1024MB
Memory Size
512MB
DDR3
Memory Type
GDDR3
128bit
Memory Bus
256bit
25.60GB/s
Bandwidth
54.40GB/s

Render Config

6
Compute Units
4
-
-
-
480
Shading Units
320
24
TMUs
16
8
ROPs
16
-
-
-
-
-
-
8 KB (per CU)
L1 Cache
-
256 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

3.600 GPixel/s
Pixel Rate
10.56 GPixel/s
10.80 GTexel/s
Texture Rate
10.56 GTexel/s
-
-
-
432.0 GFLOPS
FP32 (float)
422.4 GFLOPS
-
FP64 (double)
84.48 GFLOPS

Board Design

20W
TDP
55W
-
-
-
No outputs
Outputs
No outputs
-
-
-

Graphics Processor

Thames
GPU Name
M88
Thames LP
GPU Variant
-
TeraScale 2
Architecture
TeraScale
TSMC
Foundry
TSMC
40 nm
Process Size
55 nm
0.716 billion
Transistors
0.666 billion
104 mm²
Die Size
192 mm²

Graphics Features

11.2 (11_0)
DirectX
10.1 (10_1)
4.4
OpenGL
3.3
1.2
OpenCL
N/A
N/A
Vulkan
N/A
-
-
-
5.0
Shader Model
4.1

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