AMD Radeon HD 6490M Mac Edition vs NVIDIA GeForce 945A

VS

AMD Radeon HD 6490M Mac Edition

NVIDIA GeForce 945A

We compared two Mobile platform GPUs: 256MB VRAM Radeon HD 6490M Mac Edition and 1024MB VRAM GeForce 945A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 945A 's Advantages

Released 3 years and 10 months late

Boost Clock1189MHz

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (40.10GB/s vs 25.41GB/s)

224 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6490M Mac Edition

0.24 TFLOPS

GeForce 945A +280%

0.913 TFLOPS

Radeon HD 6490M Mac Edition

VS

GeForce 945A

Graphics Card

May 2011

Release Date

Mar 2015

Vancouver

Generation

GeForce 900A

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1006 MHz

-

Boost Clock

1189 MHz

794 MHz

Memory Clock

1253 MHz

Memory

256MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

64bit

25.41GB/s

Bandwidth

40.10GB/s

Render Config

2

Compute Units

-

160

Shading Units

384

8

TMUs

24

4

ROPs

8

-

8 KB (per CU)

L1 Cache

64 KB (per SMM)

128 KB

L2 Cache

1024 KB

-

Theoretical Performance

3.000 GPixel/s

Pixel Rate

9.512 GPixel/s

6.000 GTexel/s

Texture Rate

28.54 GTexel/s

-

240.0 GFLOPS

FP32 (float)

913.2 GFLOPS

-

FP64 (double)

28.54 GFLOPS

Board Design

Unknown

TDP

33W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Seymour

GPU Name

GM108

Seymour XTX M2 (216-0809000)

GPU Variant

-

TeraScale 2

Architecture

Maxwell

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.37 billion

Transistors

Unknown

67 mm²

Die Size

Unknown

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.3

-

CUDA

5.0

Shader Model

5.1

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