AMD Radeon RX 455 OEM vs AMD Radeon HD 7870 XT

VS

AMD Radeon RX 455 OEM

AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 455 OEM and 2GB VRAM Radeon HD 7870 XT 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 3 years and 7 months late

Lower TDP (100W vs 185W)

AMD Radeon HD 7870 XT 's Advantages

Boost Clock975MHz

Larger VRAM bandwidth (192.0GB/s vs 104.0GB/s)

768 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 455 OEM

1.613 TFLOPS

Radeon HD 7870 XT +85%

2.995 TFLOPS

Radeon RX 455 OEM

VS

Radeon HD 7870 XT

Graphics Card

Jun 2016

Release Date

Nov 2012

Arctic Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

975 MHz

1625 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

104.0GB/s

Bandwidth

192.0GB/s

Render Config

12

Compute Units

24

-

768

Shading Units

1536

48

TMUs

96

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

16.80 GPixel/s

Pixel Rate

31.20 GPixel/s

50.40 GTexel/s

Texture Rate

93.60 GTexel/s

-

1.613 TFLOPS

FP32 (float)

2.995 TFLOPS

100.8 GFLOPS

FP64 (double)

748.8 GFLOPS

Board Design

100W

TDP

185W

300 W

Suggested PSU

450 W

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

Outputs

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

1x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Tobago

GPU Name

Tahiti

Tobago PRO (215-0875010)

GPU Variant

Tahiti LE (215-0821122)

GCN 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

4.313 billion

160 mm²

Die Size

352 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.0

OpenCL

1.2

Vulkan

1.2

-

6.3

Shader Model

5.1

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