NVIDIA GeForce GT 640M LE vs AMD Radeon HD 7970M

VS

NVIDIA GeForce GT 640M LE AMD Radeon HD 7970M

We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 640M LE and 2GB VRAM Radeon HD 7970M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640M LE 's Advantages

Lower TDP (32W vs 100W)

AMD Radeon HD 7970M 's Advantages

Larger VRAM bandwidth (153.6GB/s vs 50.24GB/s)

1184 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640M LE

0.289 TFLOPS

Radeon HD 7970M +652%

2.176 TFLOPS

GeForce GT 640M LE

VS

Radeon HD 7970M

Graphics Card

May 2012

Release Date

Apr 2012

GeForce 600M

Generation

London

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

Base Clock

-

Boost Clock

-

785 MHz

Memory Clock

1200 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

50.24GB/s

Bandwidth

153.6GB/s

Render Config

2

SM Count

-

Compute Units

20

96

Shading Units

1280

16

TMUs

80

4

ROPs

32

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

Theoretical Performance

3.012 GPixel/s

Pixel Rate

27.20 GPixel/s

12.05 GTexel/s

Texture Rate

68.00 GTexel/s

-

FP16 (half)

-

289.0 GFLOPS

FP32 (float)

2.176 TFLOPS

24.08 GFLOPS

FP64 (double)

136.0 GFLOPS

Graphics Processor

GF108

GPU Name

Wimbledon

-

GPU Variant

Wimbledon XT (216-0836036)

Fermi

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.585 billion

Transistors

2.8 billion

116 mm²

Die Size

212 mm²

Board Design

32W

TDP

100W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

2.1

CUDA

-

5.1

Shader Model

5.1

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