ATI Mobility Radeon HD 3870 vs AMD Radeon HD 6750M Mac Edition

VS

ATI Mobility Radeon HD 3870

AMD Radeon HD 6750M Mac Edition

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 512MB VRAM Radeon HD 6750M Mac Edition 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 50.82GB/s)

AMD Radeon HD 6750M Mac Edition 's Advantages

Released 2 years and 10 months late

160 additional rendering cores

Lower TDP (35W vs 55W)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon HD 6750M Mac Edition +36%

0.574 TFLOPS

Mobility Radeon HD 3870

VS

Radeon HD 6750M Mac Edition

Graphics Card

Jun 2008

Release Date

Apr 2011

M8x

Generation

Vancouver

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-A (3.0)

Clock Speeds

-

850 MHz

Memory Clock

794 MHz

Memory

512MB

Memory Size

512MB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

50.82GB/s

Render Config

4

Compute Units

6

-

320

Shading Units

480

16

TMUs

24

16

ROPs

8

-

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

4.784 GPixel/s

10.56 GTexel/s

Texture Rate

14.35 GTexel/s

-

422.4 GFLOPS

FP32 (float)

574.1 GFLOPS

84.48 GFLOPS

FP64 (double)

-

Board Design

55W

TDP

35W

-

No outputs

Outputs

No outputs

-

Graphics Processor

M88

GPU Name

Whistler

-

GPU Variant

Whistler PRO (216-0810005)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

0.716 billion

192 mm²

Die Size

104 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

N/A

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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