AMD Radeon R9 M385 vs NVIDIA GeForce GTX 870M

VS

AMD Radeon R9 M385

NVIDIA GeForce GTX 870M

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M385 and 3GB VRAM GeForce GTX 870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M385 's Advantages

Released 1 years and 2 months late

Boost Clock has increased by 3% (1000MHz vs 967MHz)

More VRAM (4GB vs 3GB)

NVIDIA GeForce GTX 870M 's Advantages

Larger VRAM bandwidth (120.0GB/s vs 76.80GB/s)

448 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M385

1.792 TFLOPS

GeForce GTX 870M +45%

2.599 TFLOPS

Radeon R9 M385

VS

GeForce GTX 870M

Graphics Card

May 2015

Release Date

Mar 2014

Gem System

Generation

GeForce 800M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

900 MHz

Base Clock

941 MHz

1000 MHz

Boost Clock

967 MHz

1200 MHz

Memory Clock

1250 MHz

Memory

4GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

192bit

76.80GB/s

Bandwidth

120.0GB/s

Render Config

14

Compute Units

-

896

Shading Units

1344

56

TMUs

112

16

ROPs

24

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

384 KB

-

Theoretical Performance

16.00 GPixel/s

Pixel Rate

27.08 GPixel/s

56.00 GTexel/s

Texture Rate

108.3 GTexel/s

-

1.792 TFLOPS

FP32 (float)

2.599 TFLOPS

112.0 GFLOPS

FP64 (double)

108.3 GFLOPS

Board Design

Unknown

TDP

100W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Strato

GPU Name

GK104

Strato XT

GPU Variant

N15E-GT-A2

GCN 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

3.54 billion

160 mm²

Die Size

294 mm²

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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