AMD Radeon HD 6490M Mac Edition: GPU Specs & Benchmarks

The Radeon HD 6490M Mac Edition is a graphics card by AMD, built on the 40 nm process and based on the Seymour graphics processor (GPU). The video card specifications and performance tests (benchmarks) are listed below.

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Graphics Processor (GPU)

GPU Name

Seymour

Model number

Seymour XTX
(216-0810005)

Architecture

TeraScale 2

Foundry

TSMC

Process Size

40 nm

Transistors

370 million

Die Size

67 mm²

Graphics Card

Release Date

May 2nd, 2011

Family

Vancouver
(HD 6400M)

Production

End-of-life

Predecessor

Manhattan

Bus Interface

PCIe 2.0 x16

Memory

Memory Size

256 MB

Memory Type

GDDR5

Memory Bus

64 bit

Bandwidth

25.41 GB/s

Performance

Pixel fillrate

3.000 GPixel/s

Texture fillrate

6.000 GTexel/s

FP32 (float) performance

240.0 GFLOPS

Clock Speeds

Memory Clock

794 MHz
3.2 Gbps effective

GPU Clock

750 MHz

Render Config

Shading Units

160

TMUs

8

ROPs

4

Compute Units

2

L1 Cache

8 KB (per CU)

L2 Cache

128 KB

Board Design

Thermal design power (TDP)

unknown

Display Connectors

No outputs

API support

DirectX

11.2 (11_0)

OpenGL

4.4

OpenCL

1.2

Vulkan

N/A

Shader Model

5.0