ATI Radeon HD 4870 Mac Edition vs ATI Radeon X800 GT AGP

VS

ATI Radeon HD 4870 Mac Edition

ATI Radeon X800 GT AGP

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 256MB VRAM Radeon X800 GT AGP 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

Released 1 years and 2 months late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (108.8GB/s vs 31.55GB/s)

800 additional rendering cores

ATI Radeon X800 GT AGP 's Advantages

Lower TDP (40W vs 150W)

Score

Radeon HD 4870 Mac Edition

VS

Radeon X800 GT AGP

Graphics Card

Jan 2009

Release Date

Nov 2007

Radeon R700

Generation

Radeon R400 AGP

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

AGP 8x

Clock Speeds

-

850 MHz

Memory Clock

493 MHz

Memory

512MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

108.8GB/s

Bandwidth

31.55GB/s

Render Config

10

Compute Units

-

800

Shading Units

-

40

TMUs

8

16

ROPs

8

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

3.784 GPixel/s

30.00 GTexel/s

Texture Rate

3.784 GTexel/s

-

1200 GFLOPS

FP32 (float)

-

240.0 GFLOPS

FP64 (double)

-

Board Design

150W

TDP

40W

450 W

Suggested PSU

200 W

1x DVI 1x mini-DisplayPort 1.0

Outputs

1x DVI 1x VGA 1x S-Video

2x 6-pin

Power Connectors

1x Molex

Graphics Processor

RV770

GPU Name

R420

RV770 XT Mac (215-0669080)

GPU Variant

R420 GT (215RAACGA12F)

TeraScale

Architecture

R400

TSMC

Foundry

TSMC

55 nm

Process Size

130 nm

0.956 billion

Transistors

0.16 billion

256 mm²

Die Size

281 mm²

Graphics Features

10.1 (10_1)

DirectX

9.0b (9_2)

3.3

OpenGL

2.1

1.1

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

-

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