AMD Radeon Sky 500 vs AMD Radeon R9 285

VS

AMD Radeon Sky 500

AMD Radeon R9 285

We compared two Desktop platform GPUs: 4GB VRAM Radeon Sky 500 and 2GB VRAM Radeon R9 285 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Sky 500 's Advantages

More VRAM (4GB vs 2GB)

Lower TDP (150W vs 190W)

AMD Radeon R9 285 's Advantages

Released 1 years and 6 months late

Larger VRAM bandwidth (176.0GB/s vs 153.6GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon Sky 500

2.432 TFLOPS

Radeon R9 285 +35%

3.29 TFLOPS

Radeon Sky 500

VS

Radeon R9 285

Graphics Card

Mar 2013

Release Date

Sep 2014

Radeon Sky

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

1375 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

176.0GB/s

Render Config

20

Compute Units

28

-

1280

Shading Units

1792

80

TMUs

112

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

30.40 GPixel/s

Pixel Rate

29.38 GPixel/s

76.00 GTexel/s

Texture Rate

102.8 GTexel/s

-

FP16 (half)

3.290 TFLOPS

2.432 TFLOPS

FP32 (float)

3.290 TFLOPS

152.0 GFLOPS

FP64 (double)

205.6 GFLOPS

Board Design

150W

TDP

190W

450 W

Suggested PSU

450 W

1x DisplayPort 1.2

Outputs

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

1x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Pitcairn

GPU Name

Tonga

Pitcairn XT GL (215-0828073)

GPU Variant

Tonga PRO (215-0851128)

GCN 1.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

5 billion

212 mm²

Die Size

366 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2.170

-

5.1

Shader Model

6.5

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