ATI Mobility Radeon X1800 vs GeForce GT 635M
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 994 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Architecture | Fermi (2010−2014) | no data |
| GPU code name | N13E-GE2 | M58 |
| Market segment | Laptop | Laptop |
| Release date | 6 December 2011 (12 years ago) | 1 March 2006 (18 years ago) |
Detailed specifications
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 144 | 18 |
| CUDA cores | Up to 144 | no data |
| Core clock speed | Up to 675 MHz | 6 MHz |
| Boost clock speed | 753 MHz | 450 MHz |
| Number of transistors | 1,170 million | 321 million |
| Manufacturing process technology | 40 nm | 90 nm |
| Power consumption (TDP) | 35 Watt | no data |
| Texture fill rate | 16.20 | 5.400 |
| Floating-point performance | 0.3888 gflops | no data |
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).
| Laptop size | large | large |
| Bus support | PCI Express 2.0 | no data |
| Interface | PCIe 2.0 x16 | MXM-III |
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 | DDR3 | GDDR3 |
| Maximum RAM amount | 2 GB | 256 MB |
| Memory bus width | Up to 192bit | 256 Bit |
| Memory clock speed | 1800 MHz | no data |
| Memory bandwidth | Up to 43.2 GB/s | 32 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 | No outputs |
| HDMI | + | - |
| HDCP | + | - |
| Maximum VGA resolution | Up to 2048x1536 | no data |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| 3D Blu-Ray | + | - |
| Optimus | + | - |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 12 API | 9.0c (9_3) |
| Shader Model | 5.1 | 3.0 |
| OpenGL | 4.5 | 2.0 |
| OpenCL | 1.1 | N/A |
| Vulkan | N/A | N/A |
| CUDA | + | - |
Pros & cons summary
| Recency | 6 December 2011 | 1 March 2006 |
| Maximum RAM amount | 2 GB | 256 MB |
| Chip lithography | 40 nm | 90 nm |
GT 635M has an age advantage of 5 years, a 700% higher maximum VRAM amount, and a 125% more advanced lithography process.
We couldn't decide between GeForce GT 635M and Mobility Radeon X1800. We've got no test results to judge.
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.
