ATI Mobility Radeon HD 3870 vs AMD Radeon HD 8750A

VS

ATI Mobility Radeon HD 3870

AMD Radeon HD 8750A

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 1024MB VRAM Radeon HD 8750A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3870 's Advantages

Larger VRAM bandwidth (54.40GB/s vs 16.00GB/s)

AMD Radeon HD 8750A 's Advantages

Released 4 years and 8 months late

More VRAM (1024GB vs 512GB)

64 additional rendering cores

Lower TDP (45W vs 55W)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon HD 8750A +9%

0.461 TFLOPS

Mobility Radeon HD 3870

VS

Radeon HD 8750A

Graphics Card

Jun 2008

Release Date

Feb 2013

M8x

Generation

All-In-One

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-A (3.0)

Clock Speeds

-

850 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

1024MB

GDDR3

Memory Type

DDR3

256bit

Memory Bus

64bit

54.40GB/s

Bandwidth

16.00GB/s

Render Config

4

Compute Units

6

-

320

Shading Units

384

16

TMUs

24

16

ROPs

8

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

4.800 GPixel/s

10.56 GTexel/s

Texture Rate

14.40 GTexel/s

-

422.4 GFLOPS

FP32 (float)

460.8 GFLOPS

84.48 GFLOPS

FP64 (double)

28.80 GFLOPS

Board Design

55W

TDP

45W

-

No outputs

Outputs

No outputs

-

Graphics Processor

M88

GPU Name

Mars

-

GPU Variant

Mars XT

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

0.95 billion

192 mm²

Die Size

77 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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