Quadro P400 vs Tesla K20c
Aggregate performance score
We've compared Tesla K20c and Quadro P400, covering specs and all relevant benchmarks.
Tesla K20c outperforms P400 by a whopping 109% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 483 | 672 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.35 | 3.02 |
| Power efficiency | 2.74 | 9.83 |
| Architecture | Kepler (2012−2018) | Pascal (2016−2021) |
| GPU code name | GK110 | GP107 |
| Market segment | Workstation | Workstation |
| Release date | 12 November 2012 (11 years ago) | 7 February 2017 (7 years ago) |
| Launch price (MSRP) | $3,199 | $119.99 |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
Quadro P400 has 763% better value for money than Tesla K20c.
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 | 256 |
| Core clock speed | 706 MHz | 1228 MHz |
| Boost clock speed | no data | 1252 MHz |
| Number of transistors | 7,080 million | 3,300 million |
| Manufacturing process technology | 28 nm | 14 nm |
| Power consumption (TDP) | 225 Watt | 30 Watt |
| Texture fill rate | 146.8 | 20.03 |
| Floating-point processing power | 3.524 TFLOPS | 0.641 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 3.0 x16 |
| Length | 267 mm | 145 mm |
| Width | 2-slot | 1-slot |
| 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 | GDDR5 |
| Maximum RAM amount | 5 GB | 2 GB |
| Memory bus width | 320 Bit | 64 Bit |
| Memory clock speed | 1300 MHz | 1002 MHz |
| Memory bandwidth | 208.0 GB/s | 32.06 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 | 3x mini-DisplayPort |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 (12_1) |
| Shader Model | 5.1 | 6.4 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | 1.2.131 |
| CUDA | 3.5 | 6.1 |
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 | 8.90 | 4.26 |
| Recency | 12 November 2012 | 7 February 2017 |
| Maximum RAM amount | 5 GB | 2 GB |
| Chip lithography | 28 nm | 14 nm |
| Power consumption (TDP) | 225 Watt | 30 Watt |
Tesla K20c has a 108.9% higher aggregate performance score, and a 150% higher maximum VRAM amount.
Quadro P400, on the other hand, has an age advantage of 4 years, a 100% more advanced lithography process, and 650% lower power consumption.
The Tesla K20c is our recommended choice as it beats the Quadro P400 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
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