AMD Radeon R9 M385X vs AMD Radeon HD 7850M

VS

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M385X and 2GB VRAM Radeon HD 7850M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M385X 's Advantages

Released 3 years and 1 months late

Boost Clock1100MHz

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (76.80GB/s vs 64.00GB/s)

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M385X +128%

1.971 TFLOPS

Radeon HD 7850M

0.864 TFLOPS

Radeon R9 M385X

VS

Radeon HD 7850M

Graphics Card

May 2015

Release Date

Apr 2012

Gem System

Generation

London

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

1000 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

76.80GB/s

Bandwidth

64.00GB/s

Render Config

-

SM Count

-

14

Compute Units

10

896

Shading Units

640

56

TMUs

40

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

17.60 GPixel/s

Pixel Rate

10.80 GPixel/s

61.60 GTexel/s

Texture Rate

27.00 GTexel/s

-

FP16 (half)

-

1.971 TFLOPS

FP32 (float)

864.0 GFLOPS

123.2 GFLOPS

FP64 (double)

54.00 GFLOPS

Graphics Processor

Strato

GPU Name

Heathrow

Strato XT

GPU Variant

Heathrow PRO

GCN 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

1.5 billion

160 mm²

Die Size

123 mm²

Board Design

Unknown

TDP

40W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.2.170

Vulkan

1.2

-

CUDA

-

6.5

Shader Model

5.1

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