AMD Radeon HD 6970M Rebrand vs NVIDIA GeForce GT 645M

VS

AMD Radeon HD 6970M Rebrand

NVIDIA GeForce GT 645M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6970M Rebrand and 2GB VRAM GeForce GT 645M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970M Rebrand 's Advantages

Larger VRAM bandwidth (64.00GB/s vs 28.80GB/s)

416 additional rendering cores

NVIDIA GeForce GT 645M 's Advantages

Released 1 years and 9 months late

More VRAM (2GB vs 1024GB)

Lower TDP (32W vs 75W)

Score

Benchmark

FP32 (float)

Radeon HD 6970M Rebrand +135%

1.28 TFLOPS

GeForce GT 645M

0.544 TFLOPS

Radeon HD 6970M Rebrand

VS

GeForce GT 645M

Graphics Card

Jan 2011

Release Date

Oct 2012

Vancouver

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

28.80GB/s

Render Config

10

Compute Units

-

800

Shading Units

384

40

TMUs

32

16

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.80 GPixel/s

Pixel Rate

5.672 GPixel/s

32.00 GTexel/s

Texture Rate

22.69 GTexel/s

-

1280 GFLOPS

FP32 (float)

544.5 GFLOPS

-

FP64 (double)

22.69 GFLOPS

Board Design

75W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Broadway

GPU Name

GK107

Broadway XT

GPU Variant

N13P-GS

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.04 billion

Transistors

1.27 billion

166 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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