ATI Radeon HD 4870 X2

This is a GPU manufactured with TSMC 55nm process, based on ATI TeraScale architecture and released on Aug 2008. It features 0.956 billion transistors, 10 Rendering cores and 1024MB GDDR5 memory, with 256KB L2 cache, theoretical performance of 1200GFLOPS, with total power consumption of 286W.

Graphics Card

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Release Date

Aug 2008

Generation

Radeon R700

Type

Desktop

Bus Interface

PCIe 2.0 x16

Clock Speeds

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Memory Clock

900 MHz

Memory

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Memory Size

1024MB

Memory Type

GDDR5

Memory Bus

256bit

Bandwidth

115.2GB/s

Render Config

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Compute Units

10

Shading Units

800

TMUs

40

ROPs

16

L1 Cache

16 KB (per CU)

L2 Cache

256 KB

Theoretical Performance

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Pixel Rate

12.00 GPixel/s

Texture Rate

30.00 GTexel/s

FP32 (float)

1200 GFLOPS

FP64 (double)

240.0 GFLOPS

Graphics Processor

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GPU Name

R700

GPU Variant

R700 XT

(215-0669045)

Architecture

TeraScale

Foundry

TSMC

Process Size

55 nm

Transistors

0.956 billion

Die Size

256 mm²

Board Design

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TDP

286W

Suggested PSU

600 W

Outputs

2x DVI
1x S-Video

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

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DirectX

10.1 (10_1)

OpenGL

3.3

OpenCL

1.1

Vulkan

N/A

Shader Model

4.1

Rankings

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FP32 (float)

AMD Radeon RX 550X 4 GB GDDR5

1.211 TFLOPS

AMD Radeon 550 2 GB GDDR5

1.211 TFLOPS

AMD Radeon RX 550 2 GB GDDR5

1.211 TFLOPS

ATI FirePro V7760 1024 MB GDDR3

1.2 TFLOPS

ATI Radeon HD 4870 Mac Edition 512 MB GDDR5

1.2 TFLOPS

AMD FireStream 9270 2 GB GDDR5

1.2 TFLOPS

ATI FirePro V8700 1024 MB GDDR5

1.2 TFLOPS

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