Radeon 680M vs GeForce GT 645 OEM
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | 529 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | no data | 13.69 |
| Architecture | Fermi 2.0 (2010−2014) | RDNA 2.0 (2020−2025) |
| GPU code name | GF114 | Rembrandt+ |
| Market segment | Desktop | Laptop |
| Release date | 24 April 2012 (13 years ago) | 3 January 2023 (3 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 | 288 | 768 |
| Core clock speed | 776 MHz | 2000 MHz |
| Boost clock speed | no data | 2200 MHz |
| Number of transistors | 1,950 million | 13,100 million |
| Manufacturing process technology | 40 nm | 6 nm |
| Power consumption (TDP) | 102 Watt | 50 Watt |
| Texture fill rate | 37.25 | 105.6 |
| Floating-point processing power | 0.894 TFLOPS | 3.379 TFLOPS |
| ROPs | 24 | 32 |
| TMUs | 48 | 48 |
| Ray Tracing Cores | no data | 12 |
| L0 Cache | no data | 192 KB |
| L1 Cache | 384 KB | 256 KB |
| L2 Cache | 384 KB | 2 MB |
| L3 Cache | no data | 8 MB |
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 | no data |
| 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
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 | 2x DVI, 1x mini-HDMI | Portable Device Dependent |
| HDMI | + | - |
API and SDK support
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 | 2.0 |
| Vulkan | N/A | 1.3 |
| CUDA | 2.1 | - |
Pros & cons summary
| Recency | 24 April 2012 | 3 January 2023 |
| Chip lithography | 40 nm | 6 nm |
| Power consumption (TDP) | 102 Watt | 50 Watt |
Radeon 680M has an age advantage of 10 years, a 566.7% more advanced lithography process, and 104% lower power consumption.
We couldn't decide between GeForce GT 645 OEM and Radeon 680M. We've got no test results to judge.
Be aware that GeForce GT 645 OEM is a desktop graphics card while Radeon 680M is a notebook one.
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