ATI Radeon HD 4870 Mac Edition vs ATI Radeon HD 5870

VS

ATI Radeon HD 4870 Mac Edition

ATI Radeon HD 5870

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 1024MB VRAM Radeon HD 5870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 Mac Edition 's Advantages

Lower TDP (150W vs 188W)

ATI Radeon HD 5870 's Advantages

Released 8 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (153.6GB/s vs 108.8GB/s)

800 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4870 Mac Edition

1.2 TFLOPS

Radeon HD 5870 +126%

2.72 TFLOPS

Radeon HD 4870 Mac Edition

VS

Radeon HD 5870

Graphics Card

Jan 2009

Release Date

Sep 2009

Radeon R700

Generation

Evergreen

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

850 MHz

Memory Clock

1200 MHz

Memory

512MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

108.8GB/s

Bandwidth

153.6GB/s

Render Config

10

Compute Units

20

-

800

Shading Units

1600

40

TMUs

80

16

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

27.20 GPixel/s

30.00 GTexel/s

Texture Rate

68.00 GTexel/s

-

1200 GFLOPS

FP32 (float)

2.720 TFLOPS

240.0 GFLOPS

FP64 (double)

544.0 GFLOPS

Board Design

150W

TDP

188W

450 W

Suggested PSU

450 W

1x DVI 1x mini-DisplayPort 1.0

Outputs

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

RV770

GPU Name

Cypress

RV770 XT Mac (215-0669080)

GPU Variant

Cypress XT (215-0735033)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.956 billion

Transistors

2.154 billion

256 mm²

Die Size

334 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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