AMD Radeon HD 6490M vs AMD Radeon R9 M385X

VS

AMD Radeon HD 6490M

AMD Radeon R9 M385X

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6490M 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 R9 M385X 's Advantages

Released 4 years and 4 months late

Boost Clock1100MHz

More VRAM (4GB vs 512GB)

Larger VRAM bandwidth (76.80GB/s vs 25.60GB/s)

736 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6490M

0.256 TFLOPS

Radeon R9 M385X +669%

1.971 TFLOPS

Radeon HD 6490M

VS

Radeon R9 M385X

Graphics Card

Jan 2011

Release Date

May 2015

Vancouver

Generation

Gem System

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1000 MHz

-

Boost Clock

1100 MHz

800 MHz

Memory Clock

1200 MHz

Memory

512MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

128bit

25.60GB/s

Bandwidth

76.80GB/s

Render Config

2

Compute Units

14

-

160

Shading Units

896

8

TMUs

56

4

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

3.200 GPixel/s

Pixel Rate

17.60 GPixel/s

6.400 GTexel/s

Texture Rate

61.60 GTexel/s

-

256.0 GFLOPS

FP32 (float)

1.971 TFLOPS

-

FP64 (double)

123.2 GFLOPS

Board Design

Unknown

TDP

Unknown

-

Portable Device Dependent

Outputs

Portable Device Dependent

-

Graphics Processor

Seymour

GPU Name

Strato

Seymour XTX S3 (216-0809024)

GPU Variant

Strato XT

TeraScale 2

Architecture

GCN 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.37 billion

Transistors

2.08 billion

67 mm²

Die Size

160 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.2.170

-

5.0

Shader Model

6.5

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