GeForce GT 645 OEM vs Radeon R7 265X 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 | GCN 1.0 (2012−2020) | Fermi 2.0 (2010−2014) |
| GPU code name | Curacao | GF114 |
| Market segment | Desktop | Desktop |
| Release date | 12 August 2014 (11 years 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 | 1280 | 288 |
| Core clock speed | 900 MHz | 776 MHz |
| Boost clock speed | 925 MHz | no data |
| Number of transistors | 2,800 million | 1,950 million |
| Manufacturing process technology | 28 nm | 40 nm |
| Power consumption (TDP) | 150 Watt | 102 Watt |
| Texture fill rate | 74.00 | 37.25 |
| Floating-point processing power | 2.368 TFLOPS | 0.894 TFLOPS |
| ROPs | 32 | 24 |
| TMUs | 80 | 48 |
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 | 210 mm | 210 mm |
| Width | 2-slot | 2-slot |
| Supplementary power connectors | 1x 6-pin | 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 | GDDR5 | GDDR5 |
| Maximum RAM amount | 2 GB | 1 GB |
| Memory bus width | 256 Bit | 192 Bit |
| Memory clock speed | 1400 MHz | 957 MHz |
| Memory bandwidth | 179.2 GB/s | 91.87 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 HDMI, 1x DisplayPort | 2x DVI, 1x mini-HDMI |
| HDMI | + | + |
API and SDK compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_1) | 12 (11_0) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | 1.2.131 | N/A |
| CUDA | - | 2.1 |
Pros & cons summary
| Recency | 12 August 2014 | 24 April 2012 |
| Maximum RAM amount | 2 GB | 1 GB |
| Chip lithography | 28 nm | 40 nm |
| Power consumption (TDP) | 150 Watt | 102 Watt |
R7 265X OEM has an age advantage of 2 years, a 100% higher maximum VRAM amount, and a 42.9% more advanced lithography process.
GT 645 OEM, on the other hand, has 47.1% lower power consumption.
We couldn't decide between Radeon R7 265X OEM and GeForce GT 645 OEM. We've got no test results to judge.
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