AMD Radeon HD 6750 vs ATI Radeon HD 4650

VS

AMD Radeon HD 6750

ATI Radeon HD 4650

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6750 and 256MB VRAM Radeon HD 4650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6750 's Advantages

Released 2 years and 4 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (73.60GB/s vs 22.40GB/s)

400 additional rendering cores

ATI Radeon HD 4650 's Advantages

Lower TDP (48W vs 86W)

Score

Benchmark

FP32 (float)

Radeon HD 6750 +162%

1.008 TFLOPS

Radeon HD 4650

0.384 TFLOPS

Radeon HD 6750

VS

Radeon HD 4650

Graphics Card

Jan 2011

Release Date

Sep 2008

Northern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1150 MHz

Memory Clock

700 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

128bit

73.60GB/s

Bandwidth

22.40GB/s

Render Config

9

Compute Units

4

-

720

Shading Units

320

36

TMUs

32

16

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

11.20 GPixel/s

Pixel Rate

4.800 GPixel/s

25.20 GTexel/s

Texture Rate

19.20 GTexel/s

-

1008 GFLOPS

FP32 (float)

384.0 GFLOPS

-

Board Design

86W

TDP

48W

250 W

Suggested PSU

200 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

-

Graphics Processor

Juniper

GPU Name

RV730

Juniper LE (215-0754009)

GPU Variant

RV730 PRO (215-0719056)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.04 billion

Transistors

0.514 billion

166 mm²

Die Size

146 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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