ATI Radeon HD 3870 Mac Edition vs AMD Radeon R5 340X OEM

VS

ATI Radeon HD 3870 Mac Edition

AMD Radeon R5 340X OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 2GB VRAM Radeon R5 340X OEM 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 16.00GB/s)

AMD Radeon R5 340X OEM 's Advantages

Released 6 years and 11 months late

More VRAM (2GB vs 512GB)

64 additional rendering cores

Lower TDP (65W vs 106W)

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition

0.497 TFLOPS

Radeon R5 340X OEM +39%

0.691 TFLOPS

Radeon HD 3870 Mac Edition

VS

Radeon R5 340X OEM

Graphics Card

Jun 2008

Release Date

May 2015

Radeon R600

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

1126 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

2GB

GDDR4

Memory Type

DDR3

256bit

Memory Bus

64bit

72.06GB/s

Bandwidth

16.00GB/s

Render Config

4

Compute Units

6

-

320

Shading Units

384

16

TMUs

24

16

ROPs

8

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

7.200 GPixel/s

12.43 GTexel/s

Texture Rate

21.60 GTexel/s

-

497.3 GFLOPS

FP32 (float)

691.2 GFLOPS

99.46 GFLOPS

FP64 (double)

43.20 GFLOPS

Board Design

106W

TDP

65W

300 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

1x DVI 1x DisplayPort 1.2

1x 6-pin

Power Connectors

None

Graphics Processor

RV670

GPU Name

Oland

RV670 XT (215-0708005)

GPU Variant

Oland XT (215-0837000)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

0.95 billion

192 mm²

Die Size

77 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

1.2

N/A

Vulkan

1.2

-

4.1

Shader Model

5.1

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