Quadro K420 vs Tesla K20c
Aggregate performance score
We've compared Tesla K20c and Quadro K420, covering specs and all relevant benchmarks.
Tesla K20c outperforms K420 by a whopping 366% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 490 | 906 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.37 | 0.08 |
| Power efficiency | 2.73 | 3.21 |
| Architecture | Kepler (2012−2018) | Kepler (2012−2018) |
| GPU code name | GK110 | GK107 |
| Market segment | Workstation | Workstation |
| Release date | 12 November 2012 (12 years ago) | 22 July 2014 (10 years ago) |
| Launch price (MSRP) | $3,199 | $96.67 |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
Tesla K20c has 363% 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 cores | 2496 | 192 |
| Core clock speed | 706 MHz | 876 MHz |
| Number of transistors | 7,080 million | 1,270 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 225 Watt | 41 Watt |
| Texture fill rate | 146.8 | 14.02 |
| Floating-point processing power | 3.524 TFLOPS | 0.3364 TFLOPS |
| ROPs | 40 | 16 |
| TMUs | 208 | 16 |
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).
| Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Length | 267 mm | 160 mm |
| Width | 2-slot | 1" (2.5 cm) |
| Supplementary power connectors | 1x 6-pin + 1x 8-pin | None |
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 type | GDDR5 | 128 Bit |
| Maximum RAM amount | 5 GB | 1 GB/2 GB |
| Memory bus width | 320 Bit | 128 Bit |
| Memory clock speed | 1300 MHz | 891 MHz |
| Memory bandwidth | 208.0 GB/s | Up to 29 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 Connectors | No outputs | 1x DVI, 1x DisplayPort |
| Number of simultaneous displays | no data | 4 |
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.
| DirectX | 12 (11_0) | 12 |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.5 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | 1.1.126 |
| CUDA | 3.5 | 3.0 |
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 | 1.92 |
| Recency | 12 November 2012 | 22 July 2014 |
| Maximum RAM amount | 5 GB | 1 GB/2 GB |
| Power consumption (TDP) | 225 Watt | 41 Watt |
Tesla K20c has a 366.1% higher aggregate performance score, and a 400% higher maximum VRAM amount.
Quadro K420, on the other hand, has an age advantage of 1 year, and 448.8% lower power consumption.
The Tesla K20c 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.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
