Tesla K20X and Radeon 8500 XT - video card comparison
Tesla K20X
Radeon 8500 XT
Architecture
Kepler (2012−2018)
Rage 7 (2001−2006)
GPU code name
GK110
R250
Market segment
Workstation
Desktop
Release date
November 2012
June 2002
Interface
PCIe 3.0 x16
AGP 4x
Supplementary power connectors
1x 6-pin + 1x 8-pin
None
Core clock speed
732 MHz
300 MHz
Floating-point performance
3,935 gflops
-
Manufacturing process technology
28 nm
150 nm
Number of transistors
7,080 million
60 million
Pipelines / CUDA cores
2688
-
Power consumption (TDP)
235 Watt
25 Watt
Texture fill rate
164.0
2.400
Memory type
GDDR5
DDR
Maximum RAM amount
6 GB
128 MB
Memory bus width
384 Bit
128 Bit
Memory clock speed
5200 MHz
600 MBps
Memory bandwidth
249.6 GB/s
9.6 GB/s
Display Connectors
No outputs
1x DVI, 1x VGA, 1x S-Video
DirectX
12 (11_0)
8.1
CUDA
3.5
-
OpenCL
1.2
N/A
OpenGL
4.6
1.4
Shader Model
5.1
-
Vulkan
1.1.126
N/A