ATI Radeon HD 3870 Mac Edition vs ATI Radeon HD 4650 AGP

VS

ATI Radeon HD 3870 Mac Edition

ATI Radeon HD 4650 AGP

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 512MB VRAM Radeon HD 4650 AGP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3870 Mac Edition 's Advantages

Larger VRAM bandwidth (72.06GB/s vs 12.80GB/s)

ATI Radeon HD 4650 AGP 's Advantages

Lower TDP (48W vs 106W)

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition +29%

0.497 TFLOPS

Radeon HD 4650 AGP

0.384 TFLOPS

Radeon HD 3870 Mac Edition

VS

Radeon HD 4650 AGP

Graphics Card

Jun 2008

Release Date

Sep 2008

Radeon R600

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

AGP 8x

Clock Speeds

-

1126 MHz

Memory Clock

400 MHz

Memory

512MB

Memory Size

512MB

GDDR4

Memory Type

DDR2

256bit

Memory Bus

128bit

72.06GB/s

Bandwidth

12.80GB/s

Render Config

4

Compute Units

4

-

320

Shading Units

320

16

TMUs

32

16

ROPs

8

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

4.800 GPixel/s

12.43 GTexel/s

Texture Rate

19.20 GTexel/s

-

497.3 GFLOPS

FP32 (float)

384.0 GFLOPS

99.46 GFLOPS

FP64 (double)

-

Board Design

106W

TDP

48W

300 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

-

Graphics Processor

RV670

GPU Name

RV730

RV670 XT (215-0708005)

GPU Variant

RV730 PRO (215-0719056)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.666 billion

Transistors

0.514 billion

192 mm²

Die Size

146 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3 (full) 4.0 (partial)

OpenGL

3.3

N/A

OpenCL

1.1

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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