ATI Radeon HD 5850 vs ATI Radeon HD 3870 X2

VS

ATI Radeon HD 5850

ATI Radeon HD 3870 X2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 5850 and 512MB VRAM Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 5850 's Advantages

Released 1 years and 8 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (128.0GB/s vs 57.66GB/s)

1120 additional rendering cores

Lower TDP (151W vs 165W)

Score

Benchmark

FP32 (float)

Radeon HD 5850 +295%

2.088 TFLOPS

Radeon HD 3870 X2

0.528 TFLOPS

Radeon HD 5850

VS

Radeon HD 3870 X2

Graphics Card

Sep 2009

Release Date

Jan 2008

Evergreen

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

901 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

128.0GB/s

Bandwidth

57.66GB/s

Render Config

18

Compute Units

4

-

1440

Shading Units

320

72

TMUs

16

32

ROPs

16

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

256 KB

-

Theoretical Performance

23.20 GPixel/s

Pixel Rate

13.20 GPixel/s

52.20 GTexel/s

Texture Rate

13.20 GTexel/s

-

2.088 TFLOPS

FP32 (float)

528.0 GFLOPS

417.6 GFLOPS

FP64 (double)

105.6 GFLOPS

Board Design

151W

TDP

165W

450 W

Suggested PSU

450 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Cypress

GPU Name

R680

Cypress PRO (215-0735043)

GPU Variant

R680 XT (215-0708017)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

2.154 billion

Transistors

0.666 billion

334 mm²

Die Size

192 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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