Quadro K420 vs GeForce 840A
Aggregate performance score
We've compared GeForce 840A with Quadro K420, including specs and performance data.
840A outperforms K420 by an impressive 50% based on our aggregate benchmark results.
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 851 | 966 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.08 |
| Power efficiency | 6.07 | 3.25 |
| Architecture | Maxwell (2014−2017) | Kepler (2012−2018) |
| GPU code name | GM108 | GK107 |
| Market segment | Laptop | Workstation |
| Release date | 17 March 2014 (11 years ago) | 22 July 2014 (11 years ago) |
| Launch price (MSRP) | no data | $96.67 |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
Performance to price scatter graph
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 | 384 | 192 |
| Core clock speed | 1029 MHz | 876 MHz |
| Boost clock speed | 1124 MHz | no data |
| Number of transistors | no data | 1,270 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 33 Watt | 41 Watt |
| Texture fill rate | 17.98 | 14.02 |
| Floating-point processing power | 0.8632 TFLOPS | 0.3364 TFLOPS |
| ROPs | 8 | 16 |
| TMUs | 16 | 16 |
| L1 Cache | 192 KB | 16 KB |
| L2 Cache | 1024 KB | 256 KB |
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 x8 | PCIe 2.0 x16 |
| Length | no data | 160 mm |
| Width | no data | 1" (2.5 cm) |
| Supplementary power connectors | no data | 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 | DDR3 | 128 Bit |
| Maximum RAM amount | 2 GB | 1 GB/2 GB |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 1001 MHz | 891 MHz |
| Memory bandwidth | 16.02 GB/s | Up to 29 GB/s |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip 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 and SDK support
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 | 5.0 | 3.0 |
Synthetic benchmarks
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.
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.
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.
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 | 2.48 | 1.65 |
| Recency | 17 March 2014 | 22 July 2014 |
| Maximum RAM amount | 2 GB | 1 GB/2 GB |
| Power consumption (TDP) | 33 Watt | 41 Watt |
GeForce 840A has a 50.3% higher aggregate performance score, a 100% higher maximum VRAM amount, and 24.2% lower power consumption.
Quadro K420, on the other hand, has an age advantage of 4 months.
The GeForce 840A is our recommended choice as it beats the Quadro K420 in performance tests.
Be aware that GeForce 840A is a notebook graphics card while Quadro K420 is a workstation one.
Other comparisons
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