GeForce 615 vs GT 640 Rev. 2
Aggregate performance score
We've compared GeForce GT 640 Rev. 2 with GeForce 615, including specs and performance data.
640 Rev. 2 outperforms 615 by a whopping 170% 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 | 781 | 1084 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.19 | no data |
| Power efficiency | 5.13 | 1.90 |
| Architecture | Kepler 2.0 (2013−2015) | Fermi (2010−2014) |
| GPU code name | GK208 | GF108 |
| Market segment | Desktop | Laptop |
| Release date | 29 May 2013 (12 years ago) | 15 May 2012 (13 years ago) |
| Launch price (MSRP) | $89 | no data |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
Performance to price scatter graph
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 | 48 |
| Core clock speed | 1046 MHz | 660 MHz |
| Number of transistors | 915 million | 585 million |
| Manufacturing process technology | 28 nm | 40 nm |
| Power consumption (TDP) | 49 Watt | 49 Watt |
| Texture fill rate | 33.47 | 5.280 |
| Floating-point processing power | 0.8033 TFLOPS | 0.1267 TFLOPS |
| ROPs | 8 | 4 |
| TMUs | 32 | 8 |
| L1 Cache | 32 KB | 64 KB |
| L2 Cache | 128 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 2.0 x8 | PCIe 2.0 x16 |
| Length | 145 mm | no data |
| Width | 1-slot | no data |
| Supplementary power connectors | None | no data |
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 | DDR3 |
| Maximum RAM amount | 1 GB | 1 GB |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 1252 MHz | 900 MHz |
| Memory bandwidth | 40.06 GB/s | 28.8 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 HDMI, 1x VGA | No outputs |
| 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 | 1.1 |
| Vulkan | 1.1.126 | N/A |
| CUDA | 3.5 | 2.1 |
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 | 3.11 | 1.15 |
| Recency | 29 May 2013 | 15 May 2012 |
| Chip lithography | 28 nm | 40 nm |
GT 640 Rev. 2 has a 170.4% higher aggregate performance score, an age advantage of 1 year, and a 42.9% more advanced lithography process.
The GeForce GT 640 Rev. 2 is our recommended choice as it beats the GeForce 615 in performance tests.
Be aware that GeForce GT 640 Rev. 2 is a desktop graphics card while GeForce 615 is a notebook one.
Other comparisons
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