AMD Radeon R9 Nano vs AMD Radeon HD 6850

VS

AMD Radeon R9 Nano

AMD Radeon HD 6850

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 Nano and 1024MB VRAM Radeon HD 6850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 Nano 's Advantages

Released 4 years and 10 months late

More VRAM (4GB vs 1024GB)

Larger VRAM bandwidth (512.0GB/s vs 128.0GB/s)

3136 additional rendering cores

AMD Radeon HD 6850 's Advantages

Lower TDP (127W vs 175W)

Score

Benchmark

FP32 (float)

Radeon R9 Nano +450%

8.192 TFLOPS

Radeon HD 6850

1.488 TFLOPS

Radeon R9 Nano

VS

Radeon HD 6850

Graphics Card

Aug 2015

Release Date

Oct 2010

Pirate Islands

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

500 MHz

Memory Clock

1000 MHz

Memory

4GB

Memory Size

1024MB

HBM

Memory Type

GDDR5

4096bit

Memory Bus

256bit

512.0GB/s

Bandwidth

128.0GB/s

Render Config

64

Compute Units

12

-

4096

Shading Units

960

256

TMUs

48

64

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

512 KB

-

Theoretical Performance

64.00 GPixel/s

Pixel Rate

24.80 GPixel/s

256.0 GTexel/s

Texture Rate

37.20 GTexel/s

8.192 TFLOPS

FP16 (half)

-

8.192 TFLOPS

FP32 (float)

1488 GFLOPS

512.0 GFLOPS

FP64 (double)

-

Board Design

175W

TDP

127W

450 W

Suggested PSU

300 W

1x HDMI 1.4a 3x DisplayPort 1.2

Outputs

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

1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Fiji

GPU Name

Barts

Fiji XT CA (215-0862120)

GPU Variant

Barts PRO (215-0798006)

GCN 3.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

8.9 billion

Transistors

1.7 billion

596 mm²

Die Size

255 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.0

OpenCL

1.2

Vulkan

N/A

-

6.3

Shader Model

5.0

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