AMD Radeon R9 285 vs AMD Radeon Sky 900

VS

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 285 and 3GB VRAM Radeon Sky 900 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 285 's Advantages

Released 1 years and 6 months late

Lower TDP (190W vs 300W)

AMD Radeon Sky 900 's Advantages

Boost Clock950MHz

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (240.0GB/s vs 176.0GB/s)

Score

Benchmark

FP32 (float)

Radeon R9 285

3.29 TFLOPS

Radeon Sky 900 +3%

3.405 TFLOPS

Radeon R9 285

VS

Radeon Sky 900

Graphics Card

Sep 2014

Release Date

Mar 2013

Volcanic Islands

Generation

Radeon Sky

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

825 MHz

-

Boost Clock

950 MHz

1375 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

176.0GB/s

Bandwidth

240.0GB/s

Render Config

-

SM Count

-

28

Compute Units

28

1792

Shading Units

1792

112

TMUs

112

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

768 KB

Theoretical Performance

29.38 GPixel/s

Pixel Rate

30.40 GPixel/s

102.8 GTexel/s

Texture Rate

106.4 GTexel/s

3.290 TFLOPS

FP16 (half)

-

3.290 TFLOPS

FP32 (float)

3.405 TFLOPS

205.6 GFLOPS

FP64 (double)

851.2 GFLOPS

Graphics Processor

Tonga

GPU Name

Tahiti

Tonga PRO (215-0851128)

GPU Variant

Orthrus

GCN 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

4.313 billion

366 mm²

Die Size

352 mm²

Board Design

190W

TDP

300W

450 W

Suggested PSU

700 W

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

Outputs

1x DVI 1x mini-DisplayPort 1.2

2x 6-pin

Power Connectors

2x 8-pin

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.2.170

Vulkan

1.2

-

CUDA

-

6.5

Shader Model

5.1

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