NVIDIA Quadro K420
The NVIDIA Quadro K420 is a workstation graphics card released on July 22, 2014, built on the Kepler architecture. It has 1 GB of DDR3 memory, a boost clock of 780 MHz and a 41 W board power rating. It scores 721 in the PassMark G3D benchmark. It supports DirectX 11, OpenGL 4.6, Vulkan 1.2 and CUDA compute capability 3.0.
Depth: 34 recorded fields, 1 feature, 5 PassMark workloads
Specification data last verified October 1, 2026 against PassMark Videocard Benchmark and Wikipedia GPU list tables (wikigrid-2026-09). Coverage: 6 of 10 tracked specifications recorded.
Performance
The NVIDIA Quadro K420 scores 721 in the PassMark G3D benchmark, higher than 46.5% of the 2,658 GPUs benchmarked (PassMark rank #1,620), measured across 505 submitted results. Its PassMark G2D score is 288.
PassMark workload tests
In the PassMark workload tests the NVIDIA Quadro K420 averages DirectX 9 18 fps, DirectX 10 2 fps, DirectX 11 8 fps, DirectX 12 3 fps and GPU Compute 343 ops/s, across 505 submitted results. Frames per second are PassMark test-scene rates, not game frame rates.
As stated by PassMark
PassMark's own listing for the NVIDIA Quadro K420 states the PCIe 2.0 x16 interface, up to 1 GB of memory, a core clock of 780 MHz, DirectX 11 and OpenGL 4.5, first benchmarked on 2014-10-27. These are PassMark's figures, shown separately from the specification tables above.
Not to be confused with
This page covers the NVIDIA Quadro K420 specifically. It is a different product from NVIDIA Quadro K4200, which have their own specifications. Check the exact model name before comparing figures.
Graphics processor
The NVIDIA Quadro K420 is based on the Kepler architecture and uses the GK107 graphics processor.
Clock speeds
The NVIDIA Quadro K420 runs at a base clock of 780 MHz.
Memory
The NVIDIA Quadro K420 is equipped with 1 GB of DDR3 memory.
Board and power
The NVIDIA Quadro K420 has a board power rating of 41 W and it connects over PCIe 2.0 x16.
Market
The NVIDIA Quadro K420 was released on July 22, 2014.
Benchmarks
Graphics and compute APIs
The NVIDIA Quadro K420 supports DirectX 11, OpenGL 4.6, Vulkan 1.2 and CUDA compute capability 3.0.
Feex has no recorded OpenCL version for the NVIDIA Quadro K420.
Features
The NVIDIA Quadro K420 has 1 supported feature recorded outside the media engine. A feature that no source mentions is shown as not listed, never as unsupported.
Compute and AI
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Supported: CUDA Compute capability 3.0Support for NVIDIA's CUDA computing platform, used by many creative, scientific and AI applications.
Not listed (2)
No source Feex holds states whether the NVIDIA Quadro K420 supports Tensor cores and NVLink / SLI. That is silence, not a statement that they are unsupported.
The NVIDIA Quadro K420 supports CUDA (Compute capability 3.0) under Compute and AI.
Frequently asked questions
How much VRAM does the NVIDIA Quadro K420 have?
The NVIDIA Quadro K420 has 1 GB of DDR3 memory.
How much power does the NVIDIA Quadro K420 use and what power supply does it need?
The NVIDIA Quadro K420 has a board power rating of 41 W.
How fast is the NVIDIA Quadro K420?
The NVIDIA Quadro K420 scores 721 in the PassMark G3D benchmark, higher than 46.5% of the 2,658 GPUs benchmarked. Its PassMark rank is #1,620. In the PassMark DirectX 12 test it averages 3 fps.
What is the CUDA compute capability of the NVIDIA Quadro K420?
The NVIDIA Quadro K420 has CUDA compute capability 3.0.
What bus interface does the NVIDIA Quadro K420 use?
The NVIDIA Quadro K420 connects over PCIe 2.0 x16.
When was the NVIDIA Quadro K420 released?
The NVIDIA Quadro K420 was released on July 22, 2014.
Corrections to this record
After an audit, 1 empty field was filled from sources. Each change is listed with its old value, new value, rule and sources.
1 filled value
- Architecture: Kepler (was Not recorded). Rule: Architecture from chip codename. chip GK107 -> Kepler. Sources: Wikipedia: List of Nvidia graphics processing units (revision 1377107724).
The audit log is public: all changes for this GPU, the corrections overview and the method.