ATI Radeon HD 4870 X2 vs ATI Radeon HD 4550

VS

ATI Radeon HD 4870 X2

ATI Radeon HD 4550

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4870 X2 and 256MB VRAM Radeon HD 4550 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 X2 's Advantages

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (115.2GB/s vs 10.48GB/s)

720 additional rendering cores

ATI Radeon HD 4550 's Advantages

Lower TDP (25W vs 286W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 X2 +1150%

1.2 TFLOPS

Radeon HD 4550

0.096 TFLOPS

Radeon HD 4870 X2

VS

Radeon HD 4550

Graphics Card

Aug 2008

Release Date

Sep 2008

Radeon R700

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

655 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

115.2GB/s

Bandwidth

10.48GB/s

Render Config

10

Compute Units

1

-

800

Shading Units

80

40

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

64 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

2.400 GPixel/s

30.00 GTexel/s

Texture Rate

4.800 GTexel/s

-

1200 GFLOPS

FP32 (float)

96.00 GFLOPS

240.0 GFLOPS

FP64 (double)

-

Board Design

286W

TDP

25W

600 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 1.3a 1x DisplayPort 1.0

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

R700

GPU Name

RV710

R700 XT (215-0669045)

GPU Variant

RV710 (215-0725016)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.956 billion

Transistors

0.242 billion

256 mm²

Die Size

73 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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