AMD Radeon R9 M275X vs AMD Radeon HD 7490M

VS

AMD Radeon R9 M275X

AMD Radeon HD 7490M

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M275X and 1024MB VRAM Radeon HD 7490M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M275X 's Advantages

Released 2 years late

Boost Clock925MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (72.00GB/s vs 30.40GB/s)

480 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M275X +362%

1.184 TFLOPS

Radeon HD 7490M

0.256 TFLOPS

Radeon R9 M275X

VS

Radeon HD 7490M

Graphics Card

Jan 2014

Release Date

Jan 2012

Gem System

Generation

London

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

900 MHz

Base Clock

-

925 MHz

Boost Clock

-

1125 MHz

Memory Clock

950 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

64bit

72.00GB/s

Bandwidth

30.40GB/s

Render Config

10

Compute Units

2

-

640

Shading Units

160

40

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

14.80 GPixel/s

Pixel Rate

3.200 GPixel/s

37.00 GTexel/s

Texture Rate

6.400 GTexel/s

-

1184 GFLOPS

FP32 (float)

256.0 GFLOPS

74.00 GFLOPS

FP64 (double)

-

Board Design

Unknown

TDP

9W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Venus

GPU Name

Seymour

Venus XTX (216-0846033)

GPU Variant

Seymour XTX (216-0810005)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.5 billion

Transistors

0.37 billion

123 mm²

Die Size

67 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1 (1.2)

OpenCL

1.2

1.2.170

Vulkan

N/A

-

6.5 (5.1)

Shader Model

5.0

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