AMD Radeon HD 6870 X2 vs AMD Radeon R5 235X OEM

VS

AMD Radeon HD 6870 X2 AMD Radeon R5 235X OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 X2 and 1024MB VRAM Radeon R5 235X OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 X2 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 14.40GB/s)

960 additional rendering cores

AMD Radeon R5 235X OEM 's Advantages

Released 2 years and 5 months late

Lower TDP (18W vs 300W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 X2 +620%

2.016 TFLOPS

Radeon R5 235X OEM

0.28 TFLOPS

Radeon HD 6870 X2

VS

Radeon R5 235X OEM

Graphics Card

Jul 2011

Release Date

Dec 2013

Northern Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1050 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

134.4GB/s

Bandwidth

14.40GB/s

Render Config

-

SM Count

-

14

Compute Units

2

1120

Shading Units

160

56

TMUs

8

32

ROPs

4

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

128 KB

Theoretical Performance

28.80 GPixel/s

Pixel Rate

3.500 GPixel/s

50.40 GTexel/s

Texture Rate

7.000 GTexel/s

-

FP16 (half)

-

2.016 TFLOPS

FP32 (float)

280.0 GFLOPS

-

FP64 (double)

-

Graphics Processor

Barts

GPU Name

Caicos

Barts XT (215-0798000)

GPU Variant

Caicos XT (215-0804070)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.7 billion

Transistors

0.37 billion

255 mm²

Die Size

67 mm²

Board Design

300W

TDP

18W

700 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a

-

Power Connectors

None

Graphics Features

11.2 (11_0)

DirectX

11.2 (11_0)

4.4

OpenGL

4.4

1.2

OpenCL

1.2

N/A

Vulkan

N/A

-

CUDA

-

5.0

Shader Model

5.0

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