GeForce GTX 285 Mac Edition vs GTX 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 | Kepler (2012−2018) | Tesla 2.0 (2007−2013) |
| GPU code name | GK106 | GT200B |
| Market segment | Desktop | Desktop |
| Release date | 22 April 2013 (12 years ago) | 15 January 2009 (16 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 | 576 | 240 |
| Core clock speed | 824 MHz | 648 MHz |
| Number of transistors | 2,540 million | 1,400 million |
| Manufacturing process technology | 28 nm | 55 nm |
| Power consumption (TDP) | 65 Watt | 204 Watt |
| Texture fill rate | 39.55 | 51.84 |
| Floating-point processing power | 0.9492 TFLOPS | 0.7085 TFLOPS |
| ROPs | 16 | 32 |
| TMUs | 48 | 80 |
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 3.0 x16 | PCIe 2.0 x16 |
| Length | 147 mm | 267 mm |
| Width | 1-slot | 2-slot |
| Supplementary power connectors | None | 2x 6-pin |
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 | GDDR3 |
| Maximum RAM amount | 1 GB | 1 GB |
| Memory bus width | 128 Bit | 512 Bit |
| Memory clock speed | 1000 MHz | 1242 MHz |
| Memory bandwidth | 64 GB/s | 159.0 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 | 1x DVI, 1x HDMI, 1x DisplayPort | 2x DVI, 1x S-Video |
| HDMI | + | - |
API and SDK compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 11.1 (10_0) |
| Shader Model | 5.1 | 4.0 |
| OpenGL | 4.6 | 3.3 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | 1.1.126 | N/A |
| CUDA | 3.0 | 1.3 |
Pros & cons summary
| Recency | 22 April 2013 | 15 January 2009 |
| Chip lithography | 28 nm | 55 nm |
| Power consumption (TDP) | 65 Watt | 204 Watt |
GTX 645 OEM has an age advantage of 4 years, a 96.4% more advanced lithography process, and 213.8% lower power consumption.
We couldn't decide between GeForce GTX 645 OEM and GeForce GTX 285 Mac Edition. We've got no test results to judge.
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