AMD Radeon RX 455 OEM vs AMD Radeon HD 6870 X2

VS

AMD Radeon RX 455 OEM AMD Radeon HD 6870 X2

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 455 OEM and 1024MB VRAM Radeon HD 6870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 455 OEM 's Advantages

Released 4 years and 11 months late

More VRAM (2GB vs 1GB)

Lower TDP (100W vs 300W)

AMD Radeon HD 6870 X2 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 104.0GB/s)

352 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 455 OEM

1.613 TFLOPS

Radeon HD 6870 X2 +24%

2.016 TFLOPS

Radeon RX 455 OEM

VS

Radeon HD 6870 X2

Graphics Card

Jun 2016

Release Date

Jul 2011

Arctic Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1625 MHz

Memory Clock

1050 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

104.0GB/s

Bandwidth

134.4GB/s

Render Config

-

SM Count

-

12

Compute Units

14

768

Shading Units

1120

48

TMUs

56

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

Theoretical Performance

16.80 GPixel/s

Pixel Rate

28.80 GPixel/s

50.40 GTexel/s

Texture Rate

50.40 GTexel/s

-

FP16 (half)

-

1.613 TFLOPS

FP32 (float)

2.016 TFLOPS

100.8 GFLOPS

FP64 (double)

-

Graphics Processor

Tobago

GPU Name

Barts

Tobago PRO (215-0875010)

GPU Variant

Barts XT (215-0798000)

GCN 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.08 billion

Transistors

1.7 billion

160 mm²

Die Size

255 mm²

Board Design

100W

TDP

300W

300 W

Suggested PSU

700 W

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

Outputs

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

1x 6-pin

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.0

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

6.3

Shader Model

5.0

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