AMD Radeon HD 6750M Mac Edition vs NVIDIA GeForce GT 640M

VS

AMD Radeon HD 6750M Mac Edition

NVIDIA GeForce GT 640M

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6750M Mac Edition and 2GB VRAM GeForce GT 640M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6750M Mac Edition 's Advantages

Larger VRAM bandwidth (50.82GB/s vs 28.80GB/s)

96 additional rendering cores

NVIDIA GeForce GT 640M 's Advantages

Released 11 months late

More VRAM (2GB vs 512GB)

Lower TDP (32W vs 35W)

Score

Benchmark

FP32 (float)

Radeon HD 6750M Mac Edition +19%

0.574 TFLOPS

GeForce GT 640M

0.48 TFLOPS

Radeon HD 6750M Mac Edition

VS

GeForce GT 640M

Graphics Card

Apr 2011

Release Date

Mar 2012

Vancouver

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

794 MHz

Memory Clock

900 MHz

Memory

512MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

50.82GB/s

Bandwidth

28.80GB/s

Render Config

6

Compute Units

-

480

Shading Units

384

24

TMUs

32

8

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

4.784 GPixel/s

Pixel Rate

5.000 GPixel/s

14.35 GTexel/s

Texture Rate

20.00 GTexel/s

-

574.1 GFLOPS

FP32 (float)

480.0 GFLOPS

-

FP64 (double)

20.00 GFLOPS

Board Design

35W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Whistler

GPU Name

GK107

Whistler PRO (216-0810005)

GPU Variant

N13P-GS

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.716 billion

Transistors

1.27 billion

104 mm²

Die Size

118 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

5.0

Shader Model

5.1

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