AMD Radeon HD 6490M Mac Edition vs NVIDIA GeForce GT 425M

VS

AMD Radeon HD 6490M Mac Edition

NVIDIA GeForce GT 425M

We compared two Mobile platform GPUs: 256MB VRAM Radeon HD 6490M Mac Edition and 1024MB VRAM GeForce GT 425M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6490M Mac Edition 's Advantages

Released 8 months late

64 additional rendering cores

NVIDIA GeForce GT 425M 's Advantages

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (25.60GB/s vs 25.41GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 6490M Mac Edition +11%

0.24 TFLOPS

GeForce GT 425M

0.215 TFLOPS

Radeon HD 6490M Mac Edition

VS

GeForce GT 425M

Graphics Card

May 2011

Release Date

Sep 2010

Vancouver

Generation

GeForce 400M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

794 MHz

Memory Clock

800 MHz

Memory

256MB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

64bit

Memory Bus

128bit

25.41GB/s

Bandwidth

25.60GB/s

Render Config

2

Compute Units

-

SM Count

2

160

Shading Units

96

8

TMUs

16

4

ROPs

4

-

8 KB (per CU)

L1 Cache

64 KB (per SM)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

3.000 GPixel/s

Pixel Rate

2.240 GPixel/s

6.000 GTexel/s

Texture Rate

8.960 GTexel/s

-

240.0 GFLOPS

FP32 (float)

215.0 GFLOPS

-

FP64 (double)

17.92 GFLOPS

Board Design

Unknown

TDP

23W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Seymour

GPU Name

GF108

Seymour XTX M2 (216-0809000)

GPU Variant

N11P-GS-A1

TeraScale 2

Architecture

Fermi

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.37 billion

Transistors

0.585 billion

67 mm²

Die Size

116 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

5.0

Shader Model

5.1

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