Tesla K20m vs Quadro K420

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Aggregate performance score

We've compared Quadro K420 and Tesla K20m, covering specs and all relevant benchmarks.

Quadro K420
2014
1 GB/2 GB 128-bit, 41 Watt
1.92

Tesla K20m outperforms K420 by a whopping 499% based on our aggregate benchmark results.

Primary details

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

Place in the ranking906417
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.080.62
Power efficiency3.213.50
ArchitectureKepler (2012−2018)Kepler (2012−2018)
GPU code nameGK107GK110
Market segmentWorkstationWorkstation
Release date22 July 2014 (10 years ago)5 January 2013 (11 years ago)
Launch price (MSRP)$96.67 $3,199

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

Tesla K20m has 675% better value for money than Quadro K420.

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 cores1922496
Core clock speed876 MHz706 MHz
Number of transistors1,270 million7,080 million
Manufacturing process technology28 nm28 nm
Power consumption (TDP)41 Watt225 Watt
Texture fill rate14.02146.8
Floating-point processing power0.3364 TFLOPS3.524 TFLOPS
ROPs1640
TMUs16208

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 2.0 x16
Length160 mm267 mm
Width1" (2.5 cm)2-slot
Supplementary power connectorsNone1x 6-pin + 1x 8-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 type128 BitGDDR5
Maximum RAM amount1 GB/2 GB5 GB
Memory bus width128 Bit320 Bit
Memory clock speed891 MHz1300 MHz
Memory bandwidthUp to 29 GB/s208.0 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 Connectors1x DVI, 1x DisplayPortNo outputs
Number of simultaneous displays4no data

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

3D Vision Pro+no data
Mosaic+no data
nView Desktop Management+no data

API compatibility

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

DirectX1212 (11_0)
Shader Model5.15.1
OpenGL4.54.6
OpenCL1.21.2
Vulkan1.1.1261.1.126
CUDA3.03.5

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.


Combined synthetic benchmark score

This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Quadro K420 1.92
Tesla K20m 11.50
+499%

Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

Quadro K420 741
Tesla K20m 4432
+498%

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 1.92 11.50
Recency 22 July 2014 5 January 2013
Maximum RAM amount 1 GB/2 GB 5 GB
Power consumption (TDP) 41 Watt 225 Watt

Quadro K420 has an age advantage of 1 year, and 448.8% lower power consumption.

Tesla K20m, on the other hand, has a 499% higher aggregate performance score, and a 400% higher maximum VRAM amount.

The Tesla K20m is our recommended choice as it beats the Quadro K420 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 Quadro K420
Quadro K420
NVIDIA Tesla K20m
Tesla K20m

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.


3.5 143 votes

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3.3 17 votes

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Questions & comments

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