AMD Radeon HD 6970M Mac Edition vs NVIDIA GeForce 840A

VS

AMD Radeon HD 6970M Mac Edition

NVIDIA GeForce 840A

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6970M Mac Edition and 2GB VRAM GeForce 840A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970M Mac Edition 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 16.02GB/s)

576 additional rendering cores

NVIDIA GeForce 840A 's Advantages

Released 2 years and 7 months late

Boost Clock1124MHz

Lower TDP (33W vs 75W)

Score

Benchmark

FP32 (float)

Radeon HD 6970M Mac Edition +51%

1.306 TFLOPS

GeForce 840A

0.863 TFLOPS

Radeon HD 6970M Mac Edition

VS

GeForce 840A

Graphics Card

Aug 2011

Release Date

Mar 2014

Vancouver

Generation

GeForce 800A

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1029 MHz

-

Boost Clock

1124 MHz

900 MHz

Memory Clock

1001 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

115.2GB/s

Bandwidth

16.02GB/s

Render Config

12

Compute Units

-

960

Shading Units

384

48

TMUs

16

32

ROPs

8

-

8 KB (per CU)

L1 Cache

64 KB (per SMM)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

21.76 GPixel/s

Pixel Rate

8.992 GPixel/s

32.64 GTexel/s

Texture Rate

17.98 GTexel/s

-

1306 GFLOPS

FP32 (float)

863.2 GFLOPS

-

FP64 (double)

26.98 GFLOPS

Board Design

75W

TDP

33W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Blackcomb

GPU Name

GM108

Blackcomb XT (216-0811000)

GPU Variant

-

TeraScale 2

Architecture

Maxwell

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

Unknown

212 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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