ATI Radeon X1550 vs AMD Radeon HD 6870 X2

VS

ATI Radeon X1550

AMD Radeon HD 6870 X2

We compared two Desktop platform GPUs: 256MB VRAM Radeon X1550 and 1024MB VRAM Radeon HD 6870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon X1550 's Advantages

Lower TDP (27W vs 300W)

AMD Radeon HD 6870 X2 's Advantages

Released 4 years and 6 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (134.4GB/s vs 12.80GB/s)

1120 additional rendering cores

Score

Radeon X1550

VS

Radeon HD 6870 X2

Graphics Card

Jan 2007

Release Date

Jul 2011

Radeon R500 PCIe

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

400 MHz

Memory Clock

1050 MHz

Memory

256MB

Memory Size

1024MB

DDR2

Memory Type

GDDR5

128bit

Memory Bus

256bit

12.80GB/s

Bandwidth

134.4GB/s

Render Config

-

Compute Units

14

-

Shading Units

1120

4

TMUs

56

4

ROPs

32

-

L1 Cache

8 KB (per CU)

-

L2 Cache

512 KB

-

Theoretical Performance

2.200 GPixel/s

Pixel Rate

28.80 GPixel/s

2.200 GTexel/s

Texture Rate

50.40 GTexel/s

-

FP32 (float)

2.016 TFLOPS

-

Board Design

27W

TDP

300W

200 W

Suggested PSU

700 W

1x DVI 1x VGA 1x S-Video

Outputs

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

None

Power Connectors

-

Graphics Processor

RV516

GPU Name

Barts

-

GPU Variant

Barts XT (215-0798000)

R500

Architecture

TeraScale 2

UMC

Foundry

TSMC

80 nm

Process Size

40 nm

0.107 billion

Transistors

1.7 billion

100 mm²

Die Size

255 mm²

Graphics Features

9.0c (9_3)

DirectX

11.2 (11_0)

2.1

OpenGL

4.4

N/A

OpenCL

1.2

N/A

Vulkan

N/A

-

3.0

Shader Model

5.0

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