AMD Radeon HD 8970M vs NVIDIA GeForce GT 640M LE

VS

AMD Radeon HD 8970M

NVIDIA GeForce GT 640M LE

We compared two Mobile platform GPUs: 4GB VRAM Radeon HD 8970M and 2GB VRAM GeForce GT 640M LE to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8970M 's Advantages

Released 1 years late

Boost Clock900MHz

More VRAM (4GB vs 2GB)

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

1184 additional rendering cores

NVIDIA GeForce GT 640M LE 's Advantages

Lower TDP (32W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 8970M +697%

2.304 TFLOPS

GeForce GT 640M LE

0.289 TFLOPS

Radeon HD 8970M

VS

GeForce GT 640M LE

Graphics Card

May 2013

Release Date

May 2012

Solar System

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

850 MHz

Base Clock

-

900 MHz

Boost Clock

-

1200 MHz

Memory Clock

785 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

50.24GB/s

Render Config

20

Compute Units

-

SM Count

2

1280

Shading Units

96

80

TMUs

16

32

ROPs

4

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

3.012 GPixel/s

72.00 GTexel/s

Texture Rate

12.05 GTexel/s

-

2.304 TFLOPS

FP32 (float)

289.0 GFLOPS

144.0 GFLOPS

FP64 (double)

24.08 GFLOPS

Board Design

100W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Neptune

GPU Name

GF108

Neptune XT (216-0847000)

GPU Variant

-

GCN 1.0

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

0.585 billion

212 mm²

Die Size

116 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

5.1

Shader Model

5.1

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