GeForce GT 640 Rev. 2 vs Quadro K620
Aggregate performance score
We've compared Quadro K620 with GeForce GT 640 Rev. 2, including specs and performance data.
K620 outperforms 640 Rev. 2 by an impressive 60% 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 | 676 | 801 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.11 | 0.19 |
| Power efficiency | 9.09 | 5.21 |
| Architecture | Maxwell (2014−2017) | Kepler 2.0 (2013−2015) |
| GPU code name | GM107 | GK208 |
| Market segment | Workstation | Desktop |
| Release date | 22 July 2014 (12 years ago) | 29 May 2013 (13 years ago) |
| Launch price (MSRP) | $189.89 | $89 |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
Quadro K620 has 484% better value for money than GT 640 Rev. 2.
Performance to price scatter graph
Currently popular graphics cards are shown for comparison.
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Real power consumption of some graphics cards can well exceed their nominal TDP, especially if overclocked.
| Pipelines / CUDA cores | 384 | 384 |
| Core clock speed | 1058 MHz | 1046 MHz |
| Boost clock speed | 1124 MHz | no data |
| Number of transistors | 1,870 million | 915 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 41 Watt | 49 Watt |
| Texture fill rate | 26.98 | 33.47 |
| Floating-point processing power | 0.8632 TFLOPS | 0.8033 TFLOPS |
| ROPs | 16 | 8 |
| TMUs | 24 | 32 |
| L1 Cache | 192 KB | 32 KB |
| L2 Cache | 2 MB | 128 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 2.0 x16 | PCIe 2.0 x8 |
| Length | 160 mm | 145 mm |
| Width | 1" (2.5 cm) | 1-slot |
| 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 | 128 Bit | GDDR5 |
| Maximum RAM amount | 2 GB | 1 GB |
| Memory bus width | 128 Bit | 64 Bit |
| Memory clock speed | 900 MHz | 1252 MHz |
| Memory bandwidth | Up to 29 GB/s | 40.06 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 | 1x DVI, 1x DisplayPort | 1x DVI, 1x HDMI, 1x VGA |
| Number of simultaneous displays | 4 | no data |
| HDMI | - | + |
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 | 12 (11_0) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.5 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | 1.1.126 |
| CUDA | 5.0 | 3.5 |
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 | 5.29 | 3.30 |
| Recency | 22 July 2014 | 29 May 2013 |
| Maximum RAM amount | 2 GB | 1 GB |
| Power consumption (TDP) | 41 Watt | 49 Watt |
Quadro K620 has a 60% higher aggregate performance score, an age advantage of 1 year, a 100% higher maximum VRAM amount, and 20% lower power consumption.
The Quadro K620 is our recommended choice as it beats the GeForce GT 640 Rev. 2 in performance tests.
Be aware that Quadro K620 is a workstation graphics card while GeForce GT 640 Rev. 2 is a desktop one.
Other comparisons
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