Quadro K420 vs P400
Aggregated performance score
P400 outperforms K420 by 120% based on our aggregated benchmark results.
Primary Details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 638 | 860 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-Effectiveness Evaluation | 0.79 | 0.08 |
| Architecture | Pascal (2016−2021) | Kepler (2012−2018) |
| GPU code name | GP107 | GK107 |
| Market segment | Workstation | Workstation |
| Release date | 7 February 2017 (7 years ago) | 22 July 2014 (9 years ago) |
| Launch price (MSRP) | $119.99 | $96.67 |
| Current price | $73 (0.6x MSRP) | $402 (4.2x MSRP) |
Cost-Effectiveness Evaluation
Performance to price ratio. The higher, the better.
Quadro P400 has 888% better value for money than Quadro K420.
Detailed Specifications
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 cores | 256 | 192 |
| Core clock speed | 1228 MHz | 876 MHz |
| Boost clock speed | 1252 MHz | no data |
| Number of transistors | 3,300 million | 1,270 million |
| Manufacturing process technology | 14 nm | 28 nm |
| Power consumption (TDP) | 30 Watt | 41 Watt |
| Texture fill rate | 20.03 | 14.02 |
| Floating-point performance | 679.9 gflops | 336.4 gflops |
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 3.0 x16 | PCIe 2.0 x16 |
| Length | 145 mm | 160 mm |
| Width | 1-slot | 1" (2.5 cm) |
| Supplementary power connectors | None | 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 | 2 GB | 1 GB/2 GB |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 4008 MHz | 1782 MHz |
| Memory bandwidth | 32.06 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 | 3x mini-DisplayPort | DVI-I DP |
| Number of simultaneous displays | no data | 4 |
Supported GPU 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 graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_1) | 12 |
| Shader Model | 6.4 | 5 |
| OpenGL | 4.6 | 4.5 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2.131 | + |
| CUDA | 6.1 | 3.0 |
Synthetic benchmark performance
Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.
Combined synthetic benchmark score
This is our combined benchmark performance 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.
P400 outperforms K420 by 120% based on our aggregated benchmark results.
Passmark
This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. 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.
Benchmark coverage: 25%
P400 outperforms K420 by 120% in Passmark.
GeekBench 5 OpenCL
Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses OpenCL API by Khronos Group.
Benchmark coverage: 9%
P400 outperforms K420 by 212% in GeekBench 5 OpenCL.
GeekBench 5 Vulkan
Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses Vulkan API by AMD & Khronos Group.
Benchmark coverage: 5%
P400 outperforms K420 by 183% in GeekBench 5 Vulkan.
GeekBench 5 CUDA
Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses CUDA API by NVIDIA.
Benchmark coverage: 4%
P400 outperforms K420 by 322% in GeekBench 5 CUDA.
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 | 4.23 | 1.92 |
| Recency | 7 February 2017 | 22 July 2014 |
| Cost | $119.99 | $96.67 |
| Maximum RAM amount | 2 GB | 1 GB/2 GB |
| Chip lithography | 14 nm | 28 nm |
| Power consumption (TDP) | 30 Watt | 41 Watt |
The Quadro P400 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.
