ATI Radeon HD 4750 vs AMD Radeon HD 6490

VS

ATI Radeon HD 4750

AMD Radeon HD 6490

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4750 and 1024MB VRAM Radeon HD 6490 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4750 's Advantages

Larger VRAM bandwidth (51.20GB/s vs 16.00GB/s)

320 additional rendering cores

AMD Radeon HD 6490 's Advantages

Released 1 years and 10 months late

More VRAM (1024GB vs 512GB)

Lower TDP (39W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 4750 +165%

0.934 TFLOPS

Radeon HD 6490

0.352 TFLOPS

Radeon HD 4750

VS

Radeon HD 6490

Graphics Card

Sep 2009

Release Date

Jul 2011

Radeon R700

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

500 MHz

Memory

512MB

Memory Size

1024MB

GDDR5

Memory Type

DDR2

128bit

Memory Bus

128bit

51.20GB/s

Bandwidth

16.00GB/s

Render Config

8

Compute Units

4

-

640

Shading Units

320

32

TMUs

16

ROPs

8

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

11.68 GPixel/s

Pixel Rate

4.400 GPixel/s

23.36 GTexel/s

Texture Rate

8.800 GTexel/s

-

934.4 GFLOPS

FP32 (float)

352.0 GFLOPS

186.9 GFLOPS

FP64 (double)

-

Board Design

100W

TDP

39W

300 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

None

Graphics Processor

RV740

GPU Name

Redwood

RV740 PRO

GPU Variant

Redwood LE

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.826 billion

Transistors

0.627 billion

137 mm²

Die Size

104 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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