ATI Mobility Radeon HD 3870 vs AMD Radeon HD 7750M

VS

ATI Mobility Radeon HD 3870

AMD Radeon HD 7750M

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 2GB VRAM Radeon HD 7750M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7750M 's Advantages

Released 3 years and 10 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 54.40GB/s)

192 additional rendering cores

Lower TDP (28W vs 55W)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon HD 7750M +39%

0.589 TFLOPS

Mobility Radeon HD 3870

VS

Radeon HD 7750M

Graphics Card

Jun 2008

Release Date

Apr 2012

M8x

Generation

London

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

850 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

64.00GB/s

Render Config

4

Compute Units

8

-

320

Shading Units

512

16

TMUs

32

16

ROPs

16

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

9.200 GPixel/s

10.56 GTexel/s

Texture Rate

18.40 GTexel/s

-

422.4 GFLOPS

FP32 (float)

588.8 GFLOPS

84.48 GFLOPS

FP64 (double)

36.80 GFLOPS

Board Design

55W

TDP

28W

-

No outputs

Outputs

No outputs

-

Graphics Processor

M88

GPU Name

Chelsea

-

GPU Variant

Chelsea PRO

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

1.5 billion

192 mm²

Die Size

123 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3

OpenGL

4.6

N/A

OpenCL

1.2

N/A

Vulkan

1.2

-

4.1

Shader Model

5.1

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