AMD Radeon HD 6490M vs AMD Radeon HD 8870M

VS

AMD Radeon HD 6490M

AMD Radeon HD 8870M

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6490M 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 25.60GB/s)

480 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6490M

0.256 TFLOPS

Radeon HD 8870M +287%

0.992 TFLOPS

Radeon HD 6490M

VS

Radeon HD 8870M

Graphics Card

Jan 2011

Release Date

Apr 2013

Vancouver

Generation

Solar System

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

725 MHz

-

Boost Clock

775 MHz

800 MHz

Memory Clock

1125 MHz

Memory

512MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

128bit

25.60GB/s

Bandwidth

72.00GB/s

Render Config

2

Compute Units

10

-

160

Shading Units

640

8

TMUs

40

4

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

3.200 GPixel/s

Pixel Rate

12.40 GPixel/s

6.400 GTexel/s

Texture Rate

31.00 GTexel/s

-

256.0 GFLOPS

FP32 (float)

992.0 GFLOPS

-

FP64 (double)

62.00 GFLOPS

Board Design

Unknown

TDP

Unknown

-

Portable Device Dependent

Outputs

Portable Device Dependent

-

Graphics Processor

Seymour

GPU Name

Venus

Seymour XTX S3 (216-0809024)

GPU Variant

Venus XT (216-0846000)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.37 billion

Transistors

1.5 billion

67 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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