AMD Radeon Pro 455 vs NVIDIA GeForce GT 640M Mac Edition

VS

AMD Radeon Pro 455

NVIDIA GeForce GT 640M Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM Radeon Pro 455 and 512MB VRAM GeForce GT 640M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 455 's Advantages

Released 3 years and 8 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (81.28GB/s vs 40.00GB/s)

384 additional rendering cores

NVIDIA GeForce GT 640M Mac Edition 's Advantages

Lower TDP (32W vs 35W)

Score

Benchmark

FP32 (float)

Radeon Pro 455 +129%

1.313 TFLOPS

GeForce GT 640M Mac Edition

0.572 TFLOPS

Radeon Pro 455

VS

GeForce GT 640M Mac Edition

Graphics Card

Oct 2016

Release Date

Feb 2013

Radeon Pro Mac

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1270 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

64bit

81.28GB/s

Bandwidth

40.00GB/s

Render Config

12

Compute Units

-

768

Shading Units

384

48

TMUs

32

16

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

128 KB

-

Theoretical Performance

13.68 GPixel/s

Pixel Rate

5.960 GPixel/s

41.04 GTexel/s

Texture Rate

23.84 GTexel/s

1313 GFLOPS

FP16 (half)

-

1313 GFLOPS

FP32 (float)

572.2 GFLOPS

82.08 GFLOPS

FP64 (double)

23.84 GFLOPS

Board Design

35W

TDP

32W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Baffin

GPU Name

GK107

Baffin PRO

GPU Variant

N13P-GS

GCN 4.0

Architecture

Kepler

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

3 billion

Transistors

1.27 billion

123 mm²

Die Size

118 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

6.4

Shader Model

5.1

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