AMD Radeon HD 6970M vs NVIDIA GeForce GT 640M Mac Edition

VS

AMD Radeon HD 6970M NVIDIA GeForce GT 640M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6970M and 512MB VRAM GeForce GT 640M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970M 's Advantages

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (115.2GB/s vs 40.00GB/s)

576 additional rendering cores

NVIDIA GeForce GT 640M Mac Edition 's Advantages

Released 2 years and 1 months late

Lower TDP (32W vs 75W)

Score

Benchmark

FP32 (float)

Radeon HD 6970M +128%

1.306 TFLOPS

GeForce GT 640M Mac Edition

0.572 TFLOPS

Radeon HD 6970M

VS

GeForce GT 640M Mac Edition

Graphics Card

Jan 2011

Release Date

Feb 2013

Vancouver

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

115.2GB/s

Bandwidth

40.00GB/s

Render Config

-

SM Count

-

12

Compute Units

-

960

Shading Units

384

48

TMUs

32

ROPs

8

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

128 KB

Theoretical Performance

21.76 GPixel/s

Pixel Rate

5.960 GPixel/s

32.64 GTexel/s

Texture Rate

23.84 GTexel/s

-

FP16 (half)

-

1306 GFLOPS

FP32 (float)

572.2 GFLOPS

-

FP64 (double)

23.84 GFLOPS

Graphics Processor

Blackcomb

GPU Name

GK107

Blackcomb XT (216-0811000)

GPU Variant

N13P-GS

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

1.27 billion

212 mm²

Die Size

118 mm²

Board Design

75W

TDP

32W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

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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