AMD Radeon HD 6870M vs AMD Radeon HD 6490M Mac Edition

VS

AMD Radeon HD 6870M AMD Radeon HD 6490M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6870M and 256MB VRAM Radeon HD 6490M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870M 's Advantages

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (64.00GB/s vs 25.41GB/s)

640 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6870M +350%

1.08 TFLOPS

Radeon HD 6490M Mac Edition

0.24 TFLOPS

Radeon HD 6870M

VS

Radeon HD 6490M Mac Edition

Graphics Card

Jan 2011

Release Date

May 2011

Vancouver

Generation

Vancouver

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1000 MHz

Memory Clock

794 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

25.41GB/s

Render Config

-

SM Count

-

10

Compute Units

2

800

Shading Units

160

40

TMUs

8

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

128 KB

Theoretical Performance

10.80 GPixel/s

Pixel Rate

3.000 GPixel/s

27.00 GTexel/s

Texture Rate

6.000 GTexel/s

-

FP16 (half)

-

1080 GFLOPS

FP32 (float)

240.0 GFLOPS

-

FP64 (double)

-

Graphics Processor

Granville

GPU Name

Seymour

Granville XT (216-0769024)

GPU Variant

Seymour XTX M2 (216-0809000)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.04 billion

Transistors

0.37 billion

166 mm²

Die Size

67 mm²

Board Design

50W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

-

Graphics Features

11.2 (11_0)

DirectX

11.2 (11_0)

4.4

OpenGL

4.4

1.2

OpenCL

1.2

N/A

Vulkan

N/A

-

CUDA

-

5.0

Shader Model

5.0

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