ATI Radeon HD 3870 Mac Edition vs ATI Radeon HD 3450 X2

VS

ATI Radeon HD 3870 Mac Edition

ATI Radeon HD 3450 X2

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 512MB VRAM Radeon HD 3450 X2 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

Released 6 months late

Larger VRAM bandwidth (72.06GB/s vs 8.000GB/s)

280 additional rendering cores

ATI Radeon HD 3450 X2 's Advantages

Lower TDP (50W vs 106W)

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition +935%

0.497 TFLOPS

Radeon HD 3450 X2

0.048 TFLOPS

Radeon HD 3870 Mac Edition

VS

Radeon HD 3450 X2

Graphics Card

Jun 2008

Release Date

Dec 2007

Radeon R600

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

500 MHz

Memory

512MB

Memory Size

512MB

GDDR4

Memory Type

DDR2

256bit

Memory Bus

64bit

72.06GB/s

Bandwidth

8.000GB/s

Render Config

4

Compute Units

2

-

320

Shading Units

40

16

TMUs

4

16

ROPs

4

-

256 KB

L2 Cache

64 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

2.400 GPixel/s

12.43 GTexel/s

Texture Rate

2.400 GTexel/s

-

497.3 GFLOPS

FP32 (float)

48.00 GFLOPS

99.46 GFLOPS

FP64 (double)

-

Board Design

106W

TDP

50W

300 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

2x DMS-59

1x 6-pin

Power Connectors

None

Graphics Processor

RV670

GPU Name

RV620

RV670 XT (215-0708005)

GPU Variant

RV620 LE

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.666 billion

Transistors

0.181 billion

192 mm²

Die Size

67 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3 (full) 4.0 (partial)

OpenGL

3.3

N/A

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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