AMD Radeon HD 7870 XT vs AMD Radeon RX 560

VS

AMD Radeon HD 7870 XT

AMD Radeon RX 560

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 4GB VRAM Radeon RX 560 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 XT 's Advantages

Larger VRAM bandwidth (192.0GB/s vs 112.0GB/s)

512 additional rendering cores

AMD Radeon RX 560 's Advantages

Released 4 years and 5 months late

Boost Clock has increased by 31% (1275MHz vs 975MHz)

More VRAM (4GB vs 2GB)

Lower TDP (75W vs 185W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT +14%

2.995 TFLOPS

Radeon RX 560

2.611 TFLOPS

Radeon HD 7870 XT

VS

Radeon RX 560

Graphics Card

Nov 2012

Release Date

Apr 2017

Southern Islands

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

925 MHz

Base Clock

1175 MHz

975 MHz

Boost Clock

1275 MHz

1500 MHz

Memory Clock

1750 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

192.0GB/s

Bandwidth

112.0GB/s

Render Config

24

Compute Units

16

-

1536

Shading Units

1024

96

TMUs

64

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

31.20 GPixel/s

Pixel Rate

20.40 GPixel/s

93.60 GTexel/s

Texture Rate

81.60 GTexel/s

-

FP16 (half)

2.611 TFLOPS

2.995 TFLOPS

FP32 (float)

2.611 TFLOPS

748.8 GFLOPS

FP64 (double)

163.2 GFLOPS

Board Design

185W

TDP

75W

450 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 2.0b 1x DisplayPort 1.4a

2x 6-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

Polaris 21

Tahiti LE (215-0821122)

GPU Variant

Polaris 21 XT (215-0908004)

GCN 1.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

4.313 billion

Transistors

3 billion

352 mm²

Die Size

123 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2

-

5.1

Shader Model

6.4

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