AMD Radeon HD 6850 1440SP Edition vs ATI Radeon HD 4850 X2

VS

AMD Radeon HD 6850 1440SP Edition

ATI Radeon HD 4850 X2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6850 1440SP Edition and 512MB VRAM Radeon HD 4850 X2 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 9 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (128.0GB/s vs 63.68GB/s)

640 additional rendering cores

Lower TDP (151W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 1440SP Edition +108%

2.088 TFLOPS

Radeon HD 4850 X2

1 TFLOPS

Radeon HD 6850 1440SP Edition

VS

Radeon HD 4850 X2

Graphics Card

Aug 2012

Release Date

Nov 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

995 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

128.0GB/s

Bandwidth

63.68GB/s

Render Config

18

Compute Units

10

-

1440

Shading Units

800

72

TMUs

40

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

23.20 GPixel/s

Pixel Rate

10.00 GPixel/s

52.20 GTexel/s

Texture Rate

25.00 GTexel/s

-

2.088 TFLOPS

FP32 (float)

1000 GFLOPS

417.6 GFLOPS

FP64 (double)

200.0 GFLOPS

Board Design

151W

TDP

250W

450 W

Suggested PSU

600 W

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

Outputs

4x DVI 1x S-Video

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Cypress

GPU Name

R700

Cypress PRO (215-0735043)

GPU Variant

R700 PRO (215-0669065)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

2.154 billion

Transistors

0.956 billion

334 mm²

Die Size

256 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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