AMD Radeon R9 M385X vs NVIDIA GeForce GT 640M Mac Edition

VS

AMD Radeon R9 M385X NVIDIA GeForce GT 640M Mac Edition

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M385X 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 R9 M385X 's Advantages

Released 2 years and 3 months late

Boost Clock1100MHz

Larger VRAM bandwidth (76.80GB/s vs 40.00GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M385X +244%

1.971 TFLOPS

GeForce GT 640M Mac Edition

0.572 TFLOPS

Radeon R9 M385X

VS

GeForce GT 640M Mac Edition

Graphics Card

May 2015

Release Date

Feb 2013

Gem System

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1000 MHz

Base Clock

-

1100 MHz

Boost Clock

-

1200 MHz

Memory Clock

1250 MHz

Memory

4GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

64bit

76.80GB/s

Bandwidth

40.00GB/s

Render Config

-

SM Count

-

14

Compute Units

-

896

Shading Units

384

56

TMUs

32

16

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

128 KB

Theoretical Performance

17.60 GPixel/s

Pixel Rate

5.960 GPixel/s

61.60 GTexel/s

Texture Rate

23.84 GTexel/s

-

FP16 (half)

-

1.971 TFLOPS

FP32 (float)

572.2 GFLOPS

123.2 GFLOPS

FP64 (double)

23.84 GFLOPS

Graphics Processor

Strato

GPU Name

GK107

Strato XT

GPU Variant

N13P-GS

GCN 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

1.27 billion

160 mm²

Die Size

118 mm²

Board Design

Unknown

TDP

32W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.2.170

Vulkan

1.1

-

CUDA

3.0

6.5

Shader Model

5.1

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