GeForce GT 645 OEM vs Radeon RX 7800M
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 130 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 16.46 | no data |
| Architecture | RDNA 3.0 (2022−2026) | Fermi 2.0 (2010−2014) |
| GPU code name | Navi 32 | GF114 |
| Market segment | Laptop | Desktop |
| Release date | 11 September 2024 (1 year 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 | 3840 | 288 |
| Core clock speed | 1295 MHz | 776 MHz |
| Boost clock speed | 2335 MHz | no data |
| Number of transistors | 28,100 million | 1,950 million |
| Manufacturing process technology | 5 nm | 40 nm |
| Power consumption (TDP) | 180 Watt | 102 Watt |
| Texture fill rate | 560.4 | 37.25 |
| Floating-point processing power | 35.87 TFLOPS | 0.894 TFLOPS |
| ROPs | 96 | 24 |
| TMUs | 240 | 48 |
| Ray Tracing Cores | 60 | no data |
| L0 Cache | 960 KB | no data |
| L1 Cache | 768 KB | 384 KB |
| L2 Cache | 4 MB | 384 KB |
| L3 Cache | 48 MB | no data |
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 4.0 x16 | PCIe 2.0 x16 |
| Length | no data | 210 mm |
| Width | no data | 2-slot |
| 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 | GDDR6 | GDDR5 |
| Maximum RAM amount | 12 GB | 1 GB |
| Memory bus width | 192 Bit | 192 Bit |
| Memory clock speed | 2250 MHz | 957 MHz |
| Memory bandwidth | 432.0 GB/s | 91.87 GB/s |
| Resizable BAR | + | - |
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 | Portable Device Dependent | 2x DVI, 1x mini-HDMI |
| HDMI | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 Ultimate (12_2) | 12 (11_0) |
| Shader Model | 6.8 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.2 | 1.1 |
| Vulkan | 1.3 | N/A |
| CUDA | - | 2.1 |
Pros & cons summary
| Recency | 11 September 2024 | 24 April 2012 |
| Maximum RAM amount | 12 GB | 1 GB |
| Chip lithography | 5 nm | 40 nm |
| Power consumption (TDP) | 180 Watt | 102 Watt |
RX 7800M has an age advantage of 12 years, a 1100% higher maximum VRAM amount, and a 700% more advanced lithography process.
GT 645 OEM, on the other hand, has 76.5% lower power consumption.
We couldn't decide between Radeon RX 7800M and GeForce GT 645 OEM. We've got no test results to judge.
Be aware that Radeon RX 7800M is a notebook graphics card while GeForce GT 645 OEM is a desktop one.
Other comparisons
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