AMD Radeon R9 M385 vs AMD Radeon HD 6990M Rebrand

VS

AMD Radeon R9 M385 AMD Radeon HD 6990M Rebrand

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M385 and 1024MB VRAM Radeon HD 6990M Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M385 's Advantages

Released 3 years and 10 months late

Boost Clock1000MHz

More VRAM (4GB vs 1GB)

Larger VRAM bandwidth (76.80GB/s vs 70.40GB/s)

96 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M385 +40%

1.792 TFLOPS

Radeon HD 6990M Rebrand

1.28 TFLOPS

Radeon R9 M385

VS

Radeon HD 6990M Rebrand

Graphics Card

May 2015

Release Date

Jul 2011

Gem System

Generation

Vancouver

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

900 MHz

Base Clock

-

1000 MHz

Boost Clock

-

1200 MHz

Memory Clock

1100 MHz

Memory

4GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

76.80GB/s

Bandwidth

70.40GB/s

Render Config

-

SM Count

-

14

Compute Units

14

896

Shading Units

800

56

TMUs

40

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

16.00 GPixel/s

Pixel Rate

12.80 GPixel/s

56.00 GTexel/s

Texture Rate

32.00 GTexel/s

-

FP16 (half)

-

1.792 TFLOPS

FP32 (float)

1280 GFLOPS

112.0 GFLOPS

FP64 (double)

-

Graphics Processor

Strato

GPU Name

Broadway

Strato XT

GPU Variant

Broadway XTX

GCN 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.08 billion

Transistors

1.04 billion

160 mm²

Die Size

166 mm²

Board Design

Unknown

TDP

100W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

1.2.170

Vulkan

N/A

-

CUDA

-

6.5

Shader Model

5.0

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