Tesla K20s vs GeForce GT 745A
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 746 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 6.78 | no data |
| Architecture | Kepler (2012−2018) | Kepler (2012−2018) |
| GPU code name | GK107 | GK110 |
| Market segment | Laptop | Workstation |
| Release date | 26 August 2013 (11 years ago) | 18 February 2013 (11 years ago) |
| Launch price (MSRP) | no data | $3,199 |
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 | 2496 |
| Core clock speed | 837 MHz | 575 MHz |
| Boost clock speed | 915 MHz | no data |
| Number of transistors | 1,270 million | 7,080 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 33 Watt | 225 Watt |
| Texture fill rate | 29.28 | 119.6 |
| Floating-point processing power | 0.7027 TFLOPS | 2.87 TFLOPS |
| ROPs | 16 | 40 |
| TMUs | 32 | 208 |
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 x16 | PCIe 2.0 x16 |
| Length | no data | 267 mm |
| Width | no data | 2-slot |
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 | GDDR5 |
| Maximum RAM amount | 2 GB | 5 GB |
| Memory bus width | 128 Bit | 320 Bit |
| Memory clock speed | 900 MHz | 1300 MHz |
| Memory bandwidth | 28.8 GB/s | 208.0 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 | No outputs | No outputs |
API compatibility
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 | 3.0 | 3.5 |
Pros & cons summary
| Recency | 26 August 2013 | 18 February 2013 |
| Maximum RAM amount | 2 GB | 5 GB |
| Power consumption (TDP) | 33 Watt | 225 Watt |
GT 745A has an age advantage of 6 months, and 581.8% lower power consumption.
Tesla K20s, on the other hand, has a 150% higher maximum VRAM amount.
We couldn't decide between GeForce GT 745A and Tesla K20s. We've got no test results to judge.
Be aware that GeForce GT 745A is a notebook card while Tesla K20s is a workstation one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
