GeForce RTX 5080 Mobile vs FX 5900 Ultra
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 | Rankine (2003−2005) | Blackwell 2.0 (2025) |
| GPU code name | NV35 | GB203 |
| Market segment | Desktop | Laptop |
| Release date | 23 October 2003 (21 year ago) | 2025 |
| Launch price (MSRP) | $499 | no data |
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 | no data | 8192 |
| Core clock speed | 450 MHz | 1500 MHz |
| Boost clock speed | no data | 2000 MHz |
| Number of transistors | 135 million | no data |
| Manufacturing process technology | 130 nm | 0 nm |
| Power consumption (TDP) | 59 Watt | 175 Watt |
| Texture fill rate | 3.600 | 512.0 |
| Floating-point processing power | no data | 32.77 TFLOPS |
| ROPs | 4 | 96 |
| TMUs | 8 | 256 |
| Tensor Cores | no data | 256 |
| Ray Tracing Cores | no data | 64 |
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 | AGP 8x | PCIe 5.0 x16 |
| Length | 218 mm | no data |
| Width | 2-slot | no data |
| Supplementary power connectors | 1x Molex | 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 | DDR | GDDR7 |
| Maximum RAM amount | 256 MB | 16 GB |
| Memory bus width | 256 Bit | 256 Bit |
| Memory clock speed | 425 MHz | 2500 MHz |
| Memory bandwidth | 27.2 GB/s | 1.01 TB/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 DVI, 1x VGA, 1x S-Video | 1x HDMI 2.1, 3x DisplayPort 1.4a |
| HDMI | - | + |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 9.0a | 12 Ultimate (12_2) |
| Shader Model | no data | 6.8 |
| OpenGL | 1.5 (2.1) | 4.6 |
| OpenCL | N/A | 3.0 |
| Vulkan | N/A | 1.3 |
| CUDA | - | 10.1 |
Pros & cons summary
| Maximum RAM amount | 256 MB | 16 GB |
| Power consumption (TDP) | 59 Watt | 175 Watt |
FX 5900 Ultra has 196.6% lower power consumption.
RTX 5080 Mobile, on the other hand, has a 6300% higher maximum VRAM amount.
We couldn't decide between GeForce FX 5900 Ultra and GeForce RTX 5080 Mobile. We've got no test results to judge.
Be aware that GeForce FX 5900 Ultra is a desktop card while GeForce RTX 5080 Mobile is a notebook 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
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