RTX A4000 vs Tesla K20c

#ad 
Buy on Amazon
VS

Aggregate performance score

We've compared Tesla K20c and RTX A4000, covering specs and all relevant benchmarks.

Tesla K20c
2012
5 GB GDDR5, 225 Watt
8.95

RTX A4000 outperforms Tesla K20c by a whopping 464% based on our aggregate benchmark results.

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking49058
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.37no data
Power efficiency2.7324.73
ArchitectureKepler (2012−2018)Ampere (2020−2024)
GPU code nameGK110GA104
Market segmentWorkstationWorkstation
Release date12 November 2012 (12 years ago)12 April 2021 (3 years ago)
Launch price (MSRP)$3,199 no data

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores24966144
Core clock speed706 MHz735 MHz
Boost clock speedno data1560 MHz
Number of transistors7,080 million17,400 million
Manufacturing process technology28 nm8 nm
Power consumption (TDP)225 Watt140 Watt
Texture fill rate146.8299.5
Floating-point processing power3.524 TFLOPS19.17 TFLOPS
ROPs4096
TMUs208192
Tensor Coresno data192
Ray Tracing Coresno data48

Form factor & compatibility

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

InterfacePCIe 2.0 x16PCIe 4.0 x16
Length267 mm241 mm
Width2-slot1-slot
Supplementary power connectors1x 6-pin + 1x 8-pin1x 6-pin

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeGDDR5GDDR6
Maximum RAM amount5 GB16 GB
Memory bus width320 Bit256 Bit
Memory clock speed1300 MHz1750 MHz
Memory bandwidth208.0 GB/s448.0 GB/s

Connectivity and outputs

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 outputs4x DisplayPort 1.4a

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX12 (11_0)12 Ultimate (12_2)
Shader Model5.16.7
OpenGL4.64.6
OpenCL1.23.0
Vulkan1.1.1261.3
CUDA3.58.6

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary


Performance score 8.95 50.51
Recency 12 November 2012 12 April 2021
Maximum RAM amount 5 GB 16 GB
Chip lithography 28 nm 8 nm
Power consumption (TDP) 225 Watt 140 Watt

RTX A4000 has a 464.4% higher aggregate performance score, an age advantage of 8 years, a 220% higher maximum VRAM amount, a 250% more advanced lithography process, and 60.7% lower power consumption.

The RTX A4000 is our recommended choice as it beats the Tesla K20c in performance tests.


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

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.


NVIDIA Tesla K20c
Tesla K20c
NVIDIA RTX A4000
RTX A4000

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


4.7 12 votes

Rate Tesla K20c on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
4 636 votes

Rate RTX A4000 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.