GeForce GTX 650 vs Tesla K20c
Aggregate performance score
We've compared Tesla K20c with GeForce GTX 650, including specs and performance data.
Tesla K20c outperforms GTX 650 by an impressive 97% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 490 | 659 |
| Place by popularity | not in top-100 | 75 |
| Cost-effectiveness evaluation | 0.37 | 1.37 |
| Power efficiency | 2.73 | 4.79 |
| Architecture | Kepler (2012−2018) | Kepler (2012−2018) |
| GPU code name | GK110 | GK107 |
| Market segment | Workstation | Desktop |
| Release date | 12 November 2012 (12 years ago) | 6 September 2012 (12 years ago) |
| Launch price (MSRP) | $3,199 | $109 |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
GTX 650 has 270% better value for money than Tesla K20c.
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 | 2496 | 384 |
| Core clock speed | 706 MHz | 1058 MHz |
| Number of transistors | 7,080 million | 1,270 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 225 Watt | 64 Watt |
| Texture fill rate | 146.8 | 33.86 |
| Floating-point processing power | 3.524 TFLOPS | 0.8125 TFLOPS |
| ROPs | 40 | 16 |
| TMUs | 208 | 32 |
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).
| Bus support | no data | PCI Express 3.0 |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Length | 267 mm | 147 mm |
| Height | no data | 4.38" (11.1 cm) |
| Width | 2-slot | 1-slot |
| Supplementary power connectors | 1x 6-pin + 1x 8-pin | 1x 6-pin |
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 | GDDR5 | GDDR5 |
| Maximum RAM amount | 5 GB | 2 GB |
| Memory bus width | 320 Bit | 128-bit GDDR5 |
| Memory clock speed | 1300 MHz | 5.0 GB/s |
| Memory bandwidth | 208.0 GB/s | 80.0 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 | One Dual Link DVI-I, One Dual Link DVI-D, One Mini HDMI |
| Multi monitor support | no data | 4 displays |
| HDMI | - | + |
| HDCP | - | + |
| Maximum VGA resolution | no data | 2048x1536 |
| Audio input for HDMI | no data | Internal |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| 3D Blu-Ray | - | + |
| 3D Gaming | - | + |
| 3D Vision | - | + |
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 | 4.3 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | 1.1.126 |
| CUDA | 3.5 | + |
Synthetic benchmark performance
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. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Octane Render OctaneBench
This is a special benchmark measuring graphics card performance in OctaneRender, which is a realistic GPU rendering engine by OTOY Inc., available either as a standalone program, or as a plugin for 3DS Max, Cinema 4D and many other apps. It renders four different static scenes, then compares render times with a reference GPU which is currently GeForce GTX 980. This benchmark has nothing to do with gaming and is aimed at professional 3D graphics artists.
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 | 8.95 | 4.54 |
| Recency | 12 November 2012 | 6 September 2012 |
| Maximum RAM amount | 5 GB | 2 GB |
| Power consumption (TDP) | 225 Watt | 64 Watt |
Tesla K20c has a 97.1% higher aggregate performance score, an age advantage of 2 months, and a 150% higher maximum VRAM amount.
GTX 650, on the other hand, has 251.6% lower power consumption.
The Tesla K20c is our recommended choice as it beats the GeForce GTX 650 in performance tests.
Be aware that Tesla K20c is a workstation graphics card while GeForce GTX 650 is a desktop 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.
