AMD Radeon HD 6770M Mac Edition vs AMD Radeon HD 8870M

VS

AMD Radeon HD 6770M Mac Edition

AMD Radeon HD 8870M

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6770M Mac Edition and 2GB VRAM Radeon HD 8870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8870M 's Advantages

Released 2 years and 3 months late

Boost Clock775MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (72.00GB/s vs 57.60GB/s)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6770M Mac Edition

0.696 TFLOPS

Radeon HD 8870M +42%

0.992 TFLOPS

Radeon HD 6770M Mac Edition

VS

Radeon HD 8870M

Graphics Card

Jan 2011

Release Date

Apr 2013

Vancouver

Generation

Solar System

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

725 MHz

-

Boost Clock

775 MHz

900 MHz

Memory Clock

1125 MHz

Memory

512MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

57.60GB/s

Bandwidth

72.00GB/s

Render Config

6

Compute Units

10

-

480

Shading Units

640

24

TMUs

40

8

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

5.800 GPixel/s

Pixel Rate

12.40 GPixel/s

17.40 GTexel/s

Texture Rate

31.00 GTexel/s

-

696.0 GFLOPS

FP32 (float)

992.0 GFLOPS

-

FP64 (double)

62.00 GFLOPS

Board Design

35W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

Whistler

GPU Name

Venus

Whistler XT (216-0810001)

GPU Variant

Venus XT (216-0846000)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.716 billion

Transistors

1.5 billion

104 mm²

Die Size

123 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

2.1 (1.2)

N/A

Vulkan

1.2.170

-

5.0

Shader Model

6.5 (5.1)

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