Radeon Sky 900 and Tesla K20m - video card comparison

Radeon Sky 900

Tesla K20m

Architecture

GCN 1.0 (2012−2020)

Kepler (2012−2018)

GPU code name

Tahiti

GK110

Market segment

Desktop

Workstation

Release date

March 2013

January 2013

Bus support

PCIe 3.0

-

Interface

PCIe 3.0 x16

PCIe 2.0 x16

Supplementary power connectors

2x 8-pin

1x 6-pin + 1x 8-pin

Boost clock speed

950 MHz

-

Core clock speed

825 MHz

706 MHz

Floating-point performance

2x 3,405 gflops

3,524 gflops

Manufacturing process technology

28 nm

28 nm

Number of transistors

4,313 million

7,080 million

Pipelines / CUDA cores

3584

2496

Power consumption (TDP)

300 Watt

225 Watt

Texture fill rate

106.4

146.8

Memory type

GDDR5

GDDR5

Maximum RAM amount

6 GB

5 GB

Memory bus width

384 Bit

320 Bit

Memory clock speed

5000 MHz

5200 MHz

Memory bandwidth

480 GB/s

208.0 GB/s

Display Connectors

1x DVI, 1x mini-DisplayPort

No outputs

Dual-link DVI support

1

-

DirectX

12 (11_1)

12 (11_0)

CUDA

-

3.5

OpenCL

1.2

1.2

OpenGL

4.6

4.6

Shader Model

5.1

5.1

Vulkan

1.2.131

1.1.126