Radeon 780M vs GeForce GT 645 OEM
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | 297 |
| Place by popularity | not in top-100 | 47 |
| Power efficiency | no data | 84.70 |
| Architecture | Fermi 2.0 (2010−2014) | RDNA 3.0 (2022−2024) |
| GPU code name | GF114 | Phoenix |
| Market segment | Desktop | Desktop |
| Release date | 24 April 2012 (12 years ago) | 6 December 2023 (less than a year 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 | 288 | 768 |
| Core clock speed | 776 MHz | 800 MHz |
| Boost clock speed | no data | 2700 MHz |
| Number of transistors | 1,950 million | 25,390 million |
| Manufacturing process technology | 40 nm | 4 nm |
| Power consumption (TDP) | 102 Watt | 15 Watt |
| Texture fill rate | 37.25 | 129.6 |
| Floating-point processing power | 0.894 TFLOPS | 8.294 TFLOPS |
| ROPs | 24 | 32 |
| TMUs | 48 | 48 |
| Ray Tracing Cores | no data | 12 |
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 x16 | PCIe 4.0 x8 |
| Length | 210 mm | no data |
| Width | 2-slot | IGP |
| 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 | GDDR5 | System Shared |
| Maximum RAM amount | 1 GB | System Shared |
| Memory bus width | 192 Bit | System Shared |
| Memory clock speed | 957 MHz | System Shared |
| Memory bandwidth | 91.87 GB/s | no data |
| Shared memory | - | + |
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 | 2x DVI, 1x mini-HDMI | Portable Device Dependent |
| HDMI | + | - |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 Ultimate (12_2) |
| Shader Model | 5.1 | 6.7 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.1 | 2.1 |
| Vulkan | N/A | 1.3 |
| CUDA | 2.1 | - |
Pros & cons summary
| Recency | 24 April 2012 | 6 December 2023 |
| Chip lithography | 40 nm | 4 nm |
| Power consumption (TDP) | 102 Watt | 15 Watt |
Radeon 780M has an age advantage of 11 years, a 900% more advanced lithography process, and 580% lower power consumption.
We couldn't decide between GeForce GT 645 OEM and Radeon 780M. We've got no test results to judge.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
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