AMD Radeon HD 6870 1600SP Edition vs AMD Radeon R5 340X OEM

VS

AMD Radeon HD 6870 1600SP Edition

AMD Radeon R5 340X OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 1600SP 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

AMD Radeon HD 6870 1600SP Edition 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 16.00GB/s)

1216 additional rendering cores

AMD Radeon R5 340X OEM 's Advantages

Released 2 years and 4 months late

More VRAM (2GB vs 1024GB)

Lower TDP (65W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 1600SP Edition +293%

2.72 TFLOPS

Radeon R5 340X OEM

0.691 TFLOPS

Radeon HD 6870 1600SP Edition

VS

Radeon R5 340X OEM

Graphics Card

Jan 2013

Release Date

May 2015

Northern Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

1050 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

134.4GB/s

Bandwidth

16.00GB/s

Render Config

20

Compute Units

6

-

1600

Shading Units

384

80

TMUs

24

32

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

7.200 GPixel/s

68.00 GTexel/s

Texture Rate

21.60 GTexel/s

-

2.720 TFLOPS

FP32 (float)

691.2 GFLOPS

544.0 GFLOPS

FP64 (double)

43.20 GFLOPS

Board Design

175W

TDP

65W

450 W

Suggested PSU

250 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

1x DVI 1x DisplayPort 1.2

2x 6-pin

Power Connectors

None

Graphics Processor

Cypress

GPU Name

Oland

Cypress XT (215-0735033)

GPU Variant

Oland XT (215-0837000)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

2.154 billion

Transistors

0.95 billion

334 mm²

Die Size

77 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

5.0

Shader Model

5.1

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