Tesla K20X vs Tesla K20c

Price now 446$
Games supported 39%
NVIDIA Tesla K20c
NVIDIA Tesla K20c
  • Interface PCIe 2.0 x16
  • Core clock speed 706 MHz
  • Max video memory 5 GB
  • Memory type GDDR5
  • Memory clock speed 5200 MHz
  • Maximum resolution
  • Interface PCIe 3.0 x16
  • Core clock speed 732 MHz
  • Max video memory 6 GB
  • Memory type GDDR5
  • Memory clock speed 5200 MHz
  • Maximum resolution
Price now 166$
Games supported 39%

General info

Comparison of graphics card architecture, market segment, value for money and other general parameters.

Place in performance ratingnot ratednot rated
ArchitectureKepler (2012−2018)Kepler (2012−2018)
GPU code nameGK110GK110
Market segmentWorkstationWorkstation
Release date12 November 2012
(10 years old)
12 November 2012
(10 years old)
Launch price (MSRP)$3,199 $7,699
Current price$446 (0.1x MSRP)$166 (0x MSRP)

Technical specs

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores24962688
Core clock speed706 MHz732 MHz
Number of transistors7,080 million7,080 million
Manufacturing process technology28 nm28 nm
Thermal design power (TDP)225 Watt235 Watt
Texture fill rate146.8164.0
Floating-point performance3,524 gflops3,935 gflops

Compatibility, dimensions and requirements

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

InterfacePCIe 2.0 x16PCIe 3.0 x16
Length267 mm267 mm
Supplementary power connectors1x 6-pin + 1x 8-pin1x 6-pin + 1x 8-pin


Parameters of memory installed: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors have no dedicated VRAM and use a shared part of system RAM.

Memory typeGDDR5GDDR5
Maximum RAM amount5 GB6 GB
Memory bus width320 Bit384 Bit
Memory clock speed5200 MHz5200 MHz
Memory bandwidth208.0 GB/s249.6 GB/s

Video outputs and ports

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display ConnectorsNo outputsNo outputs

API support

APIs supported, including particular versions of those APIs.

DirectX12 (11_0)12 (11_0)
Shader Model5.15.1

Mining hashrates

Cryptocurrency mining performance of Tesla K20c and Tesla K20X. Usually measured in megahashes per second.

Bitcoin / BTC (SHA256) 179 Mh/s no data

Advantages and disadvantages

Cost $3199 $7699
Memory bus width 320 384
Pipelines / CUDA cores 2496 2688
Memory bandwidth 208 249.6
Thermal design power (TDP) 225 Watt 235 Watt

Technical City couldn't decide between

NVIDIA Tesla K20c
Tesla K20c


Tesla K20X

We've got no test results to judge.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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Competitors of Tesla K20c by AMD

We believe that the nearest equivalent to Tesla K20c from AMD is Radeon Pro W6400.

AMD Radeon Pro W6400 Radeon Pro W6400

Competitors of Tesla K20X by AMD

We believe that the nearest equivalent to Tesla K20X from AMD is Radeon Pro W5500.

AMD Radeon Pro W5500 Radeon Pro W5500

Similar GPU comparisons

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User rating

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3.2 39 ratings

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Questions and comments

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