AMD Radeon R9 M385 vs AMD Radeon R7 M340

VS

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M385 and 1024MB VRAM Radeon R7 M340 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M385 's Advantages

Boost Clock has increased by 40% (1000MHz vs 715MHz)

More VRAM (4GB vs 1GB)

Larger VRAM bandwidth (76.80GB/s vs 16.00GB/s)

512 additional rendering cores

AMD Radeon R7 M340 's Advantages

Released 7 months late

Score

Benchmark

FP32 (float)

Radeon R9 M385 +226%

1.792 TFLOPS

Radeon R7 M340

0.549 TFLOPS

Radeon R9 M385

VS

Radeon R7 M340

Graphics Card

May 2015

Release Date

Dec 2015

Gem System

Generation

Gem System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

900 MHz

Base Clock

620 MHz

1000 MHz

Boost Clock

715 MHz

1200 MHz

Memory Clock

1000 MHz

Memory

4GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

76.80GB/s

Bandwidth

16.00GB/s

Render Config

-

SM Count

-

14

Compute Units

6

896

Shading Units

384

56

TMUs

24

16

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

16.00 GPixel/s

Pixel Rate

5.720 GPixel/s

56.00 GTexel/s

Texture Rate

17.16 GTexel/s

-

FP16 (half)

-

1.792 TFLOPS

FP32 (float)

549.1 GFLOPS

112.0 GFLOPS

FP64 (double)

34.32 GFLOPS

Graphics Processor

Strato

GPU Name

Opal

Strato XT

GPU Variant

Opal PRO

GCN 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

0.95 billion

160 mm²

Die Size

77 mm²

Board Design

Unknown

TDP

Unknown

-

Suggested PSU

-

Portable Device Dependent

Outputs

Portable Device Dependent

-

Power Connectors

None

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

2.1 (1.2)

1.2.170

Vulkan

1.2.170

-

CUDA

-

6.5

Shader Model

6.5 (5.1)

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