Radeon RX 550 640SP vs Sky 500
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 401 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 5.68 | no data |
| Architecture | GCN 1.0 (2011−2020) | GCN 4.0 (2016−2020) |
| GPU code name | Pitcairn | Baffin |
| Market segment | Workstation | Desktop |
| Release date | 27 March 2013 (11 years ago) | 13 October 2017 (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 | 1280 | 640 |
| Core clock speed | 950 MHz | 1019 MHz |
| Boost clock speed | no data | 1071 MHz |
| Number of transistors | 2,800 million | 3,000 million |
| Manufacturing process technology | 28 nm | 14 nm |
| Power consumption (TDP) | 150 Watt | 60 Watt |
| Texture fill rate | 76.00 | 42.84 |
| Floating-point processing power | 2.432 TFLOPS | 1.371 TFLOPS |
| ROPs | 32 | 16 |
| TMUs | 80 | 40 |
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).
| Bus support | PCIe 3.0 | no data |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x8 |
| Length | 242 mm | 145 mm |
| Width | 1-slot | 2-slot |
| Form factor | full height / full length | no data |
| Supplementary power connectors | 1x 6-pin | 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 | 4 GB | 2 GB |
| Memory bus width | 256 Bit | 128 Bit |
| Memory clock speed | 1200 MHz | 1500 MHz |
| Memory bandwidth | 154 GB/s | 96 GB/s |
Connectivity and outputs
Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.
| Display Connectors | 1x DisplayPort | 1x DVI, 1x HDMI, 1x DisplayPort |
| HDMI | - | + |
| DisplayPort count | 1 | no data |
| Dual-link DVI support | + | - |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_1) | 12 (12_0) |
| Shader Model | 5.1 | 6.4 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | 1.2.131 | 1.2.131 |
Pros & cons summary
| Recency | 27 March 2013 | 13 October 2017 |
| Maximum RAM amount | 4 GB | 2 GB |
| Chip lithography | 28 nm | 14 nm |
| Power consumption (TDP) | 150 Watt | 60 Watt |
Sky 500 has a 100% higher maximum VRAM amount.
RX 550 640SP, on the other hand, has an age advantage of 4 years, a 100% more advanced lithography process, and 150% lower power consumption.
We couldn't decide between Radeon Sky 500 and Radeon RX 550 640SP. We've got no test results to judge.
Be aware that Radeon Sky 500 is a workstation graphics card while Radeon RX 550 640SP is a desktop one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
