NVIDIA Tesla K20m vs AMD Radeon Sky 900
GPU Specs Compare
Graphics Card
Release Date
Jan 2013
Mar 2013
Generation
Tesla
Radeon Sky
Type
Professional
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1300 MHz
1250 MHz
Base Clock
-
825 MHz
Boost Clock
-
950 MHz
Memory
Memory Size
5GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
320bit
384bit
Bandwidth
208.0GB/s
240.0GB/s
Render Config
Shading Units
2496
1792
TMUs
208
112
ROPs
40
32
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
1280 KB
768 KB
Compute Units
-
28
Theoretical Performance
Pixel Rate
36.71 GPixel/s
30.40 GPixel/s
Texture Rate
146.8 GTexel/s
106.4 GTexel/s
FP32 (float)
3.524 TFLOPS
3.405 TFLOPS
FP64 (double)
1175 GFLOPS
851.2 GFLOPS
Graphics Processor
GPU Name
GK110
Tahiti
Architecture
Kepler
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
7.08 billion
4.313 billion
Die Size
561 mm²
352 mm²
GPU Variant
-
Orthrus
Board Design
TDP
225W
300W
Suggested PSU
550 W
700 W
Outputs
No outputs
1x DVI1x mini-DisplayPort 1.2
Power Connectors
1x 6-pin + 1x 8-pin
2x 8-pin
Graphics Features
DirectX
12 (11_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
3.0
1.2
Vulkan
1.1
1.2
CUDA
3.5
-
Shader Model
5.1
5.1