GeForce GT 640 OEM vs 940A
Aggregate performance score
We've compared GeForce 940A with GeForce GT 640 OEM, including specs and performance data.
940A outperforms 640 OEM by an impressive 73% 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 | 867 | 1023 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 6.26 | 2.38 |
| Architecture | Maxwell (2014−2017) | Kepler (2012−2018) |
| GPU code name | GM108 | GK107 |
| Market segment | Laptop | Desktop |
| Release date | 13 March 2015 (11 years ago) | 24 April 2012 (14 years ago) |
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 | 1029 MHz | 797 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 | 50 Watt |
| Texture fill rate | 17.98 | 25.50 |
| Floating-point processing power | 0.8632 TFLOPS | 0.6121 TFLOPS |
| ROPs | 8 | 16 |
| TMUs | 16 | 32 |
| L1 Cache | 192 KB | 32 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 3.0 x16 |
| Length | no data | 145 mm |
| Width | no data | 1-slot |
| 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 | DDR3 |
| Maximum RAM amount | 1 GB | 2 GB |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 1001 MHz | 891 MHz |
| Memory bandwidth | 16.02 GB/s | 28.51 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 HDMI, 1x DisplayPort |
| HDMI | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 (11_0) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | 1.1.126 |
| CUDA | 5.0 | 3.0 |
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 | 2.67 | 1.54 |
| Recency | 13 March 2015 | 24 April 2012 |
| Maximum RAM amount | 1 GB | 2 GB |
| Power consumption (TDP) | 33 Watt | 50 Watt |
GeForce 940A has a 73% higher aggregate performance score, an age advantage of 2 years, and 52% lower power consumption.
GT 640 OEM, on the other hand, has a 100% higher maximum VRAM amount.
The GeForce 940A is our recommended choice as it beats the GeForce GT 640 OEM in performance tests.
Be aware that GeForce 940A is a notebook graphics card while GeForce GT 640 OEM is a desktop one.
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