GeForce 8400 GS vs Quadro K620
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 590 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 2.37 | no data |
| Power efficiency | 8.93 | no data |
| Architecture | Maxwell (2014−2017) | Tesla (2006−2010) |
| GPU code name | GM107 | G86 |
| Market segment | Workstation | Desktop |
| Release date | 22 July 2014 (10 years ago) | 17 April 2007 (17 years ago) |
| Launch price (MSRP) | $189.89 | $29.99 |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
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 | 16 |
| Core clock speed | 1058 MHz | 459 MHz |
| Boost clock speed | 1124 MHz | no data |
| Number of transistors | 1,870 million | 210 million |
| Manufacturing process technology | 28 nm | 80 nm |
| Power consumption (TDP) | 41 Watt | 40 Watt |
| Texture fill rate | 26.98 | 3.672 |
| Floating-point processing power | 0.8632 TFLOPS | 0.02938 TFLOPS |
| ROPs | 16 | 4 |
| TMUs | 24 | 8 |
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 1.0 x16 |
| Length | 160 mm | 170 mm |
| Width | 1" (2.5 cm) | 1-slot |
| Supplementary power connectors | None | None |
| SLI options | - | + |
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 | 128 Bit | DDR2 |
| Maximum RAM amount | 2 GB | 256 MB |
| Standard memory config per GPU | no data | 256 MB |
| Memory bus width | 128 Bit | 64 Bit |
| Memory clock speed | 900 MHz | 400 MHz |
| Memory bandwidth | Up to 29 GB/s | 6.4 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 | 1x DVI, 1x DisplayPort | 1x DVI, 1x VGA, 1x S-Video |
| Number of simultaneous displays | 4 | no data |
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 | 11.1 (10_0) |
| Shader Model | 5.1 | 4.0 |
| OpenGL | 4.5 | 2.1 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | 1.1.126 | N/A |
| CUDA | 5.0 | 1.1 |
Synthetic benchmark performance
Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.
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.
Pros & cons summary
| Recency | 22 July 2014 | 17 April 2007 |
| Maximum RAM amount | 2 GB | 256 MB |
| Chip lithography | 28 nm | 80 nm |
| Power consumption (TDP) | 41 Watt | 40 Watt |
Quadro K620 has an age advantage of 7 years, a 700% higher maximum VRAM amount, and a 185.7% more advanced lithography process.
8400 GS, on the other hand, has 2.5% lower power consumption.
We couldn't decide between Quadro K620 and GeForce 8400 GS. We've got no test results to judge.
Be aware that Quadro K620 is a workstation graphics card while GeForce 8400 GS is a desktop one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
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