AMD Radeon Sky 500 vs AMD Radeon R9 280X

VS

AMD Radeon Sky 500

AMD Radeon R9 280X

We compared two Desktop platform GPUs: 4GB VRAM Radeon Sky 500 and 3GB VRAM Radeon R9 280X 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 3GB)

Lower TDP (150W vs 250W)

AMD Radeon R9 280X 's Advantages

Released 7 months late

Boost Clock1000MHz

Larger VRAM bandwidth (288.0GB/s vs 153.6GB/s)

768 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon Sky 500

2.432 TFLOPS

Radeon R9 280X +68%

4.096 TFLOPS

Radeon Sky 500

VS

Radeon R9 280X

Graphics Card

Mar 2013

Release Date

Oct 2013

Radeon Sky

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

1000 MHz

1200 MHz

Memory Clock

1500 MHz

Memory

4GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

153.6GB/s

Bandwidth

288.0GB/s

Render Config

20

Compute Units

32

-

1280

Shading Units

2048

80

TMUs

128

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

768 KB

-

Theoretical Performance

30.40 GPixel/s

Pixel Rate

32.00 GPixel/s

76.00 GTexel/s

Texture Rate

128.0 GTexel/s

-

2.432 TFLOPS

FP32 (float)

4.096 TFLOPS

152.0 GFLOPS

FP64 (double)

1024 GFLOPS

Board Design

150W

TDP

250W

450 W

Suggested PSU

600 W

1x DisplayPort 1.2

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Pitcairn

GPU Name

Tahiti

Pitcairn XT GL (215-0828073)

GPU Variant

Tahiti XTL (215-0821065)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

4.313 billion

212 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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