Riva 128 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 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Fermi 2.0 (2010−2014) | no data |
| GPU code name | GF114 | NV3 |
| Market segment | Desktop | Desktop |
| Release date | 24 April 2012 (13 years ago) | 1 April 1997 (28 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 | no data |
| Core clock speed | 776 MHz | 100 MHz |
| Number of transistors | 1,950 million | 4 million |
| Manufacturing process technology | 40 nm | 350 nm |
| Power consumption (TDP) | 102 Watt | 4 Watt |
| Texture fill rate | 37.25 | 0.1 |
| Floating-point processing power | 0.894 TFLOPS | no data |
| ROPs | 24 | 1 |
| TMUs | 48 | 1 |
| L1 Cache | 384 KB | no data |
| L2 Cache | 384 KB | 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 2.0 x16 | AGP 2x |
| Length | 210 mm | no data |
| Width | 2-slot | 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 | GDDR5 | SDR |
| Maximum RAM amount | 1 GB | 4 MB |
| Memory bus width | 192 Bit | 128 Bit |
| Memory clock speed | 957 MHz | 100 MHz |
| Memory bandwidth | 91.87 GB/s | 1.6 GB/s |
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 | 1x VGA, 1x DB13W3 |
| HDMI | + | - |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 5.0 |
| Shader Model | 5.1 | no data |
| OpenGL | 4.6 | 1.0 |
| OpenCL | 1.1 | N/A |
| Vulkan | N/A | N/A |
| CUDA | 2.1 | - |
Pros & cons summary
| Recency | 24 April 2012 | 1 April 1997 |
| Maximum RAM amount | 1 GB | 4 MB |
| Chip lithography | 40 nm | 350 nm |
| Power consumption (TDP) | 102 Watt | 4 Watt |
GT 645 OEM has an age advantage of 15 years, a 25500% higher maximum VRAM amount, and a 775% more advanced lithography process.
Riva 128, on the other hand, has 2450% lower power consumption.
We couldn't decide between GeForce GT 645 OEM and Riva 128. We've got no test results to judge.
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