ATI Radeon HD 4870 Mac Edition

This is a GPU manufactured with TSMC 55nm process, based on ATI TeraScale architecture and released on Jan 2009. It features 0.956 billion transistors, 10 Rendering cores and 512MB GDDR5 memory, with 256KB L2 cache, theoretical performance of 1200GFLOPS, with total power consumption of 150W.

Graphics Card

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Release Date

Jan 2009

Generation

Radeon R700

Type

Desktop

Bus Interface

PCIe 2.0 x16

Clock Speeds

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Memory Clock

850 MHz

Memory

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Memory Size

512MB

Memory Type

GDDR5

Memory Bus

256bit

Bandwidth

108.8GB/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

RV770

GPU Variant

RV770 XT Mac

(215-0669080)

Architecture

TeraScale

Foundry

TSMC

Process Size

55 nm

Transistors

0.956 billion

Die Size

256 mm²

Board Design

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TDP

150W

Suggested PSU

450 W

Outputs

1x DVI
1x mini-DisplayPort 1.0

Power Connectors

2x 6-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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