ATI Radeon HD 3870 Mac Edition vs AMD Radeon R9 380

VS

ATI Radeon HD 3870 Mac Edition

AMD Radeon R9 380

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 2GB VRAM Radeon R9 380 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

Lower TDP (106W vs 190W)

AMD Radeon R9 380 's Advantages

Released 7 years late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (176.0GB/s vs 72.06GB/s)

1472 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition

0.497 TFLOPS

Radeon R9 380 +599%

3.476 TFLOPS

Radeon HD 3870 Mac Edition

VS

Radeon R9 380

Graphics Card

Jun 2008

Release Date

Jun 2015

Radeon R600

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

1375 MHz

Memory

512MB

Memory Size

2GB

GDDR4

Memory Type

GDDR5

256bit

Memory Bus

256bit

72.06GB/s

Bandwidth

176.0GB/s

Render Config

4

Compute Units

28

-

320

Shading Units

1792

16

TMUs

112

16

ROPs

32

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

31.04 GPixel/s

12.43 GTexel/s

Texture Rate

108.6 GTexel/s

-

FP16 (half)

3.476 TFLOPS

497.3 GFLOPS

FP32 (float)

3.476 TFLOPS

99.46 GFLOPS

FP64 (double)

217.3 GFLOPS

Board Design

106W

TDP

190W

300 W

Suggested PSU

450 W

2x DVI 1x S-Video

Outputs

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

1x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

RV670

GPU Name

Antigua

RV670 XT (215-0708005)

GPU Variant

Antigua PRO (215-0877000)

TeraScale

Architecture

GCN 3.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

5 billion

192 mm²

Die Size

366 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (12_0)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

2.0

N/A

Vulkan

1.2

-

4.1

Shader Model

6.3

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