ATI Radeon HD 4750 vs AMD Radeon HD 6450

VS

ATI Radeon HD 4750

AMD Radeon HD 6450

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4750 and 512MB VRAM Radeon HD 6450 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 25.60GB/s)

480 additional rendering cores

AMD Radeon HD 6450 's Advantages

Released 1 years and 7 months late

Lower TDP (18W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 4750 +367%

0.934 TFLOPS

Radeon HD 6450

0.2 TFLOPS

Radeon HD 4750

VS

Radeon HD 6450

Graphics Card

Sep 2009

Release Date

Apr 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

800 MHz

Memory

512MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

64bit

51.20GB/s

Bandwidth

25.60GB/s

Render Config

8

Compute Units

2

-

640

Shading Units

160

32

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

128 KB

L2 Cache

128 KB

-

Theoretical Performance

11.68 GPixel/s

Pixel Rate

2.500 GPixel/s

23.36 GTexel/s

Texture Rate

5.000 GTexel/s

-

934.4 GFLOPS

FP32 (float)

200.0 GFLOPS

186.9 GFLOPS

FP64 (double)

-

Board Design

100W

TDP

18W

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

Caicos

RV740 PRO

GPU Variant

Caicos PRO

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.826 billion

Transistors

0.37 billion

137 mm²

Die Size

67 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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