Radeon 550X 640SP vs GeForce GT 650M Mac Edition
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1025 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 2.46 | no data |
| Architecture | Kepler (2012−2018) | GCN 4.0 (2016−2020) |
| GPU code name | GK107 | Lexa |
| Market segment | Laptop | Desktop |
| Release date | 12 July 2012 (13 years ago) | 11 April 2018 (7 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 | 384 | 640 |
| Core clock speed | 900 MHz | 1019 MHz |
| Boost clock speed | no data | 1071 MHz |
| Number of transistors | 1,270 million | 2,200 million |
| Manufacturing process technology | 28 nm | 14 nm |
| Power consumption (TDP) | 45 Watt | 50 Watt |
| Texture fill rate | 28.80 | 42.84 |
| Floating-point processing power | 0.6912 TFLOPS | 1.371 TFLOPS |
| ROPs | 16 | 16 |
| TMUs | 32 | 40 |
| L1 Cache | 32 KB | 160 KB |
| L2 Cache | 256 KB | 256 KB |
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 3.0 x8 |
| Width | no data | IGP |
| 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 | GDDR5 |
| Maximum RAM amount | 512 MB | 4 GB |
| Memory bus width | 128 Bit | 64 Bit |
| Memory clock speed | 1254 MHz | 1500 MHz |
| Memory bandwidth | 80.26 GB/s | 48 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 | No outputs | 1x DVI, 1x HDMI, 1x DisplayPort |
| HDMI | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 (12_0) |
| Shader Model | 5.1 | 6.4 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | 1.1.126 | 1.2.131 |
| CUDA | 3.0 | - |
Pros & cons summary
| Recency | 12 July 2012 | 11 April 2018 |
| Maximum RAM amount | 512 MB | 4 GB |
| Chip lithography | 28 nm | 14 nm |
| Power consumption (TDP) | 45 Watt | 50 Watt |
GT 650M Mac Edition has 11.1% lower power consumption.
550X 640SP, on the other hand, has an age advantage of 5 years, a 700% higher maximum VRAM amount, and a 100% more advanced lithography process.
We couldn't decide between GeForce GT 650M Mac Edition and Radeon 550X 640SP. We've got no test results to judge.
Be aware that GeForce GT 650M Mac Edition is a notebook graphics card while Radeon 550X 640SP is a desktop one.
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