NVIDIA GeForce GT 420M vs AMD Radeon HD 6970M Mac Edition

VS

NVIDIA GeForce GT 420M

AMD Radeon HD 6970M Mac Edition

We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 420M and 2GB VRAM Radeon HD 6970M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 420M 's Advantages

Lower TDP (23W vs 75W)

AMD Radeon HD 6970M Mac Edition 's Advantages

Released 11 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (115.2GB/s vs 25.60GB/s)

864 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 420M

0.192 TFLOPS

Radeon HD 6970M Mac Edition +580%

1.306 TFLOPS

GeForce GT 420M

VS

Radeon HD 6970M Mac Edition

Graphics Card

Sep 2010

Release Date

Aug 2011

GeForce 400M

Generation

Vancouver

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

800 MHz

Memory Clock

900 MHz

Memory

512MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

25.60GB/s

Bandwidth

115.2GB/s

Render Config

-

Compute Units

12

2

SM Count

-

96

Shading Units

960

16

TMUs

48

4

ROPs

32

-

64 KB (per SM)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

2.000 GPixel/s

Pixel Rate

21.76 GPixel/s

8.000 GTexel/s

Texture Rate

32.64 GTexel/s

-

192.0 GFLOPS

FP32 (float)

1306 GFLOPS

16.00 GFLOPS

FP64 (double)

-

Board Design

23W

TDP

75W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GF108

GPU Name

Blackcomb

N11P-GE-A1

GPU Variant

Blackcomb XT (216-0811000)

Fermi

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.585 billion

Transistors

1.7 billion

116 mm²

Die Size

212 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

5.0

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