AMD Radeon R9 280X vs AMD Radeon Sky 700

VS

AMD Radeon R9 280X

AMD Radeon Sky 700

We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 280X 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 280X 's Advantages

Released 7 months late

Boost Clock1000MHz

Larger VRAM bandwidth (288.0GB/s vs 264.0GB/s)

256 additional rendering cores

AMD Radeon Sky 700 's Advantages

More VRAM (6GB vs 3GB)

Lower TDP (225W vs 250W)

Score

Benchmark

FP32 (float)

Radeon R9 280X +26%

4.096 TFLOPS

Radeon Sky 700

3.226 TFLOPS

Radeon R9 280X

VS

Radeon Sky 700

Graphics Card

Oct 2013

Release Date

Mar 2013

Volcanic Islands

Generation

Radeon Sky

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

850 MHz

Base Clock

-

1000 MHz

Boost Clock

-

1500 MHz

Memory Clock

1375 MHz

Memory

3GB

Memory Size

6GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

384bit

288.0GB/s

Bandwidth

264.0GB/s

Render Config

32

Compute Units

28

-

2048

Shading Units

1792

128

TMUs

112

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

768 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

28.80 GPixel/s

128.0 GTexel/s

Texture Rate

100.8 GTexel/s

-

4.096 TFLOPS

FP32 (float)

3.226 TFLOPS

1024 GFLOPS

FP64 (double)

806.4 GFLOPS

Board Design

250W

TDP

225W

600 W

Suggested PSU

550 W

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

Outputs

1x DisplayPort 1.2

1x 6-pin + 1x 8-pin

Power Connectors

1x 8-pin

Graphics Processor

Tahiti

GPU Name

Tahiti

Tahiti XTL (215-0821065)

GPU Variant

Tahiti PRO GL

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

4.313 billion

352 mm²

Die Size

352 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

5.1

Shader Model

5.1

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