AMD Radeon R7 M340 vs AMD Radeon R9 M385X

VS

AMD Radeon R7 M340

AMD Radeon R9 M385X

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R7 M340 and 4GB VRAM Radeon R9 M385X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R7 M340 's Advantages

Released 7 months late

AMD Radeon R9 M385X 's Advantages

Boost Clock has increased by 54% (1100MHz vs 715MHz)

More VRAM (4GB vs 1024GB)

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

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R7 M340

0.549 TFLOPS

Radeon R9 M385X +259%

1.971 TFLOPS

Radeon R7 M340

VS

Radeon R9 M385X

Graphics Card

Dec 2015

Release Date

May 2015

Gem System

Generation

Gem System

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

620 MHz

Base Clock

1000 MHz

715 MHz

Boost Clock

1100 MHz

1000 MHz

Memory Clock

1200 MHz

Memory

1024MB

Memory Size

4GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

16.00GB/s

Bandwidth

76.80GB/s

Render Config

6

Compute Units

14

-

384

Shading Units

896

24

TMUs

56

8

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

5.720 GPixel/s

Pixel Rate

17.60 GPixel/s

17.16 GTexel/s

Texture Rate

61.60 GTexel/s

-

549.1 GFLOPS

FP32 (float)

1.971 TFLOPS

34.32 GFLOPS

FP64 (double)

123.2 GFLOPS

Board Design

Unknown

TDP

Unknown

-

Portable Device Dependent

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Processor

Opal

GPU Name

Strato

Opal PRO

GPU Variant

Strato XT

GCN 1.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.95 billion

Transistors

2.08 billion

77 mm²

Die Size

160 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

2.1

1.2.170

Vulkan

1.2.170

-

6.5 (5.1)

Shader Model

6.5

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