AMD Radeon HD 6850 1440SP Edition vs ATI Radeon HD 4650

VS

AMD Radeon HD 6850 1440SP Edition

ATI Radeon HD 4650

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6850 1440SP Edition 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 6850 1440SP Edition 's Advantages

Released 3 years and 11 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (128.0GB/s vs 22.40GB/s)

1120 additional rendering cores

ATI Radeon HD 4650 's Advantages

Lower TDP (48W vs 151W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 1440SP Edition +443%

2.088 TFLOPS

Radeon HD 4650

0.384 TFLOPS

Radeon HD 6850 1440SP Edition

VS

Radeon HD 4650

Graphics Card

Aug 2012

Release Date

Sep 2008

Northern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

700 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

128.0GB/s

Bandwidth

22.40GB/s

Render Config

18

Compute Units

4

-

1440

Shading Units

320

72

TMUs

32

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

23.20 GPixel/s

Pixel Rate

4.800 GPixel/s

52.20 GTexel/s

Texture Rate

19.20 GTexel/s

-

2.088 TFLOPS

FP32 (float)

384.0 GFLOPS

417.6 GFLOPS

FP64 (double)

-

Board Design

151W

TDP

48W

450 W

Suggested PSU

200 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

-

Graphics Processor

Cypress

GPU Name

RV730

Cypress PRO (215-0735043)

GPU Variant

RV730 PRO (215-0719056)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

2.154 billion

Transistors

0.514 billion

334 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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