GeForce GT 645 OEM vs Extreme Graphics 2
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Generation 2.0 (2002−2003) | Fermi 2.0 (2010−2014) |
| GPU code name | Montara | GF114 |
| Market segment | Laptop | Desktop |
| Release date | 3 December 2003 (22 years ago) | 24 April 2012 (13 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. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | no data | 288 |
| Core clock speed | 200 MHz | 776 MHz |
| Boost clock speed | 266 MHz | no data |
| Number of transistors | no data | 1,950 million |
| Manufacturing process technology | 130 nm | 40 nm |
| Power consumption (TDP) | no data | 102 Watt |
| Texture fill rate | 0.27 | 37.25 |
| Floating-point processing power | no data | 0.894 TFLOPS |
| ROPs | 1 | 24 |
| TMUs | 1 | 48 |
| L1 Cache | no data | 384 KB |
| L2 Cache | no data | 384 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 1.0 x16 | PCIe 2.0 x16 |
| Length | no data | 210 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 | System Shared | GDDR5 |
| Maximum RAM amount | System Shared | 1 GB |
| Memory bus width | System Shared | 192 Bit |
| Memory clock speed | System Shared | 957 MHz |
| Memory bandwidth | no data | 91.87 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 outputs | 2x DVI, 1x mini-HDMI |
| HDMI | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 7.0 | 12 (11_0) |
| Shader Model | no data | 5.1 |
| OpenGL | 1.3 | 4.6 |
| OpenCL | N/A | 1.1 |
| Vulkan | N/A | N/A |
| CUDA | - | 2.1 |
Pros & cons summary
| Recency | 3 December 2003 | 24 April 2012 |
| Chip lithography | 130 nm | 40 nm |
GT 645 OEM has an age advantage of 8 years, and a 225% more advanced lithography process.
We couldn't decide between Extreme Graphics 2 and GeForce GT 645 OEM. We've got no test results to judge.
Be aware that Extreme Graphics 2 is a notebook graphics card while GeForce GT 645 OEM is a desktop one.
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