AMD Radeon HD 7870 GHz Edition vs AMD Radeon R9 Nano

VS

AMD Radeon HD 7870 GHz Edition

AMD Radeon R9 Nano

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 4GB VRAM Radeon R9 Nano to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 Nano 's Advantages

Released 3 years and 5 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (512.0GB/s vs 153.6GB/s)

2816 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7870 GHz Edition

2.56 TFLOPS

Radeon R9 Nano +220%

8.192 TFLOPS

Radeon HD 7870 GHz Edition

VS

Radeon R9 Nano

Graphics Card

Mar 2012

Release Date

Aug 2015

Southern Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

500 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

HBM

256bit

Memory Bus

4096bit

153.6GB/s

Bandwidth

512.0GB/s

Render Config

20

Compute Units

64

-

1280

Shading Units

4096

80

TMUs

256

32

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

2 MB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

64.00 GPixel/s

80.00 GTexel/s

Texture Rate

256.0 GTexel/s

-

FP16 (half)

8.192 TFLOPS

2.560 TFLOPS

FP32 (float)

8.192 TFLOPS

160.0 GFLOPS

FP64 (double)

512.0 GFLOPS

Board Design

175W

TDP

175W

450 W

Suggested PSU

450 W

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

Outputs

1x HDMI 1.4a 3x DisplayPort 1.2

2x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

Pitcairn

GPU Name

Fiji

Pitcairn XT (215-0828047)

GPU Variant

Fiji XT CA (215-0862120)

GCN 1.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

8.9 billion

212 mm²

Die Size

596 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.0

1.2

Vulkan

1.2

-

5.1

Shader Model

6.3

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