ATI Radeon HD 5870 vs ATI Radeon HD 3850 X2

VS

ATI Radeon HD 5870

ATI Radeon HD 3850 X2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 5870 and 512MB VRAM Radeon HD 3850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 5870 's Advantages

Released 1 years and 5 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (153.6GB/s vs 52.99GB/s)

1280 additional rendering cores

ATI Radeon HD 3850 X2 's Advantages

Lower TDP (140W vs 188W)

Score

Benchmark

FP32 (float)

Radeon HD 5870 +535%

2.72 TFLOPS

Radeon HD 3850 X2

0.428 TFLOPS

Radeon HD 5870

VS

Radeon HD 3850 X2

Graphics Card

Sep 2009

Release Date

Apr 2008

Evergreen

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

828 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

52.99GB/s

Render Config

20

Compute Units

4

-

1600

Shading Units

320

80

TMUs

16

32

ROPs

16

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

256 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

10.70 GPixel/s

68.00 GTexel/s

Texture Rate

10.70 GTexel/s

-

2.720 TFLOPS

FP32 (float)

428.2 GFLOPS

544.0 GFLOPS

FP64 (double)

85.63 GFLOPS

Board Design

188W

TDP

140W

450 W

Suggested PSU

300 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

RV670

Cypress XT (215-0735033)

GPU Variant

RV670 PRO (215-0708003)

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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