Radeon 550X 640SP vs ATI Xpress 1250
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 | R400 (2004−2008) | GCN 4.0 (2016−2020) |
| GPU code name | RS690 | Lexa |
| Market segment | Laptop | Desktop |
| Release date | 28 February 2007 (17 years ago) | 11 April 2018 (6 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 | 4 | 640 |
| Core clock speed | 400 MHz | 1019 MHz |
| Boost clock speed | 400 MHz | 1071 MHz |
| Number of transistors | 120 million | 2,200 million |
| Manufacturing process technology | 80 nm | 14 nm |
| Power consumption (TDP) | no data | 50 Watt |
| Texture fill rate | 1.600 | 42.84 |
| Floating-point processing power | no data | 1.371 TFLOPS |
| ROPs | 4 | 16 |
| TMUs | 4 | 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).
| Interface | PCIe 1.0 x16 | PCIe 3.0 x8 |
| Width | no data | IGP |
| Supplementary power connectors | None | 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 | System Shared | GDDR5 |
| Maximum RAM amount | System Shared | 4 GB |
| Memory bus width | System Shared | 64 Bit |
| Memory clock speed | System Shared | 1500 MHz |
| Memory bandwidth | no data | 48 GB/s |
| Shared memory | + | - |
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 | No outputs | 1x DVI, 1x HDMI, 1x DisplayPort |
| HDMI | - | + |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 9.0b (9_2) | 12 (12_0) |
| Shader Model | no data | 6.4 |
| OpenGL | 2.0 | 4.6 |
| OpenCL | N/A | 2.0 |
| Vulkan | N/A | 1.2.131 |
Pros & cons summary
| Recency | 28 February 2007 | 11 April 2018 |
| Chip lithography | 80 nm | 14 nm |
550X 640SP has an age advantage of 11 years, and a 471.4% more advanced lithography process.
We couldn't decide between Radeon Xpress 1250 and Radeon 550X 640SP. We've got no test results to judge.
Be aware that Radeon Xpress 1250 is a notebook card while Radeon 550X 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.
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