AMD Radeon R9 270X vs AMD Radeon Sky 900

VS

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270X 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 270X 's Advantages

Released 7 months late

Boost Clock has increased by 11% (1050MHz vs 950MHz)

Lower TDP (180W vs 300W)

AMD Radeon Sky 900 's Advantages

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (240.0GB/s vs 179.2GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 270X

2.688 TFLOPS

Radeon Sky 900 +26%

3.405 TFLOPS

Radeon R9 270X

VS

Radeon Sky 900

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

1000 MHz

Base Clock

825 MHz

1050 MHz

Boost Clock

950 MHz

1400 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

179.2GB/s

Bandwidth

240.0GB/s

Render Config

-

SM Count

-

20

Compute Units

28

1280

Shading Units

1792

80

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

33.60 GPixel/s

Pixel Rate

30.40 GPixel/s

84.00 GTexel/s

Texture Rate

106.4 GTexel/s

-

FP16 (half)

-

2.688 TFLOPS

FP32 (float)

3.405 TFLOPS

168.0 GFLOPS

FP64 (double)

851.2 GFLOPS

Graphics Processor

Curacao

GPU Name

Tahiti

Curacao XT (215-0848004)

GPU Variant

Orthrus

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

Board Design

180W

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 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

5.1

Shader Model

5.1

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