GeForce GT 640 Rev. 2 vs Radeon HD 6775G2
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | 791 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.19 |
| Power efficiency | no data | 5.18 |
| Architecture | Terascale 2 (2009−2015) | Kepler 2.0 (2013−2015) |
| GPU code name | no data | GK208 |
| Market segment | Laptop | Desktop |
| Release date | 14 June 2011 (14 years ago) | 29 May 2013 (12 years ago) |
| Launch price (MSRP) | no data | $89 |
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 | 880 | 384 |
| Core clock speed | no data | 1046 MHz |
| Number of transistors | no data | 915 million |
| Manufacturing process technology | 40 nm | 28 nm |
| Power consumption (TDP) | no data | 49 Watt |
| Texture fill rate | no data | 33.47 |
| Floating-point processing power | no data | 0.8033 TFLOPS |
| ROPs | no data | 8 |
| TMUs | no data | 32 |
| L1 Cache | no data | 32 KB |
| L2 Cache | no data | 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).
| Laptop size | medium sized | no data |
| Interface | no data | PCIe 2.0 x8 |
| 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 | no data | GDDR5 |
| Maximum RAM amount | no data | 1 GB |
| Memory bus width | no data | 64 Bit |
| Memory clock speed | no data | 1252 MHz |
| Memory bandwidth | no data | 40.06 GB/s |
| Shared memory | - | - |
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 data | 1x DVI, 1x HDMI, 1x VGA |
| HDMI | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11 | 12 (11_0) |
| Shader Model | no data | 5.1 |
| OpenGL | no data | 4.6 |
| OpenCL | no data | 1.2 |
| Vulkan | - | 1.1.126 |
| CUDA | - | 3.5 |
Pros & cons summary
| Recency | 14 June 2011 | 29 May 2013 |
| Chip lithography | 40 nm | 28 nm |
GT 640 Rev. 2 has an age advantage of 1 year, and a 42.9% more advanced lithography process.
We couldn't decide between Radeon HD 6775G2 and GeForce GT 640 Rev. 2. We've got no test results to judge.
Be aware that Radeon HD 6775G2 is a notebook graphics card while GeForce GT 640 Rev. 2 is a desktop one.
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