NVIDIA Tesla K20c vs NVIDIA Quadro CX
We compared two Professional market GPUs: 5GB VRAM Tesla K20c and 1536MB VRAM Quadro CX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA Tesla K20c 's Advantages
Released 4 years late
More VRAM (5GB vs 1536GB)
Larger VRAM bandwidth (208.0GB/s vs 76.80GB/s)
2304 additional rendering cores
NVIDIA Quadro CX 's Advantages
Lower TDP (150W vs 225W)
Score
Benchmark
FP32 (float)
Tesla K20c
+662%
3.524 TFLOPS
Quadro CX
0.462 TFLOPS
Graphics Card
Nov 2012
Release Date
Nov 2008
Tesla
Generation
Quadro CX
Professional
Type
Professional
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1300 MHz
Memory Clock
800 MHz
Memory
5GB
Memory Size
1536MB
GDDR5
Memory Type
GDDR3
320bit
Memory Bus
384bit
208.0GB/s
Bandwidth
76.80GB/s
Render Config
-
-
-
-
SM Count
24
2496
Shading Units
192
208
TMUs
64
40
ROPs
24
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
-
1280 KB
L2 Cache
192 KB
-
-
-
Theoretical Performance
36.71 GPixel/s
Pixel Rate
14.45 GPixel/s
146.8 GTexel/s
Texture Rate
38.53 GTexel/s
-
-
-
3.524 TFLOPS
FP32 (float)
462.3 GFLOPS
1175 GFLOPS
FP64 (double)
57.79 GFLOPS
Board Design
225W
TDP
150W
550 W
Suggested PSU
450 W
No outputs
Outputs
1x DVI
2x DisplayPort
1x S-Video
1x 6-pin + 1x 8-pin
Power Connectors
1x 6-pin
Graphics Processor
GK110
GPU Name
GT200B
GK110-885-KA-A1
GPU Variant
-
Kepler
Architecture
Tesla 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
7.08 billion
Transistors
1.4 billion
561 mm²
Die Size
470 mm²
Graphics Features
12 (11_0)
DirectX
11.1 (10_0)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.5
CUDA
1.3
5.1
Shader Model
4.0
