AMD Radeon R9 285 vs AMD Radeon Sky 700

VS

AMD Radeon R9 285

AMD Radeon Sky 700

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 285 and 6GB VRAM Radeon Sky 700 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 225W)

AMD Radeon Sky 700 's Advantages

More VRAM (6GB vs 2GB)

Larger VRAM bandwidth (264.0GB/s vs 176.0GB/s)

Score

Benchmark

FP32 (float)

Radeon R9 285 +1%

3.29 TFLOPS

Radeon Sky 700

3.226 TFLOPS

Radeon R9 285

VS

Radeon Sky 700

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

-

1375 MHz

Memory Clock

1375 MHz

Memory

2GB

Memory Size

6GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

176.0GB/s

Bandwidth

264.0GB/s

Render Config

28

Compute Units

28

-

1792

Shading Units

1792

112

TMUs

112

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

768 KB

-

Theoretical Performance

29.38 GPixel/s

Pixel Rate

28.80 GPixel/s

102.8 GTexel/s

Texture Rate

100.8 GTexel/s

3.290 TFLOPS

FP16 (half)

-

3.290 TFLOPS

FP32 (float)

3.226 TFLOPS

205.6 GFLOPS

FP64 (double)

806.4 GFLOPS

Board Design

190W

TDP

225W

450 W

Suggested PSU

550 W

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

Outputs

1x DisplayPort 1.2

2x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

Tonga

GPU Name

Tahiti

Tonga PRO (215-0851128)

GPU Variant

Tahiti PRO GL

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

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

-

6.5

Shader Model

5.1

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