ATI Radeon X800 XL

Memory Subsystem

The ATI Radeon X800 XL is equipped with 256 MB of GDDR3 memory on a 256-bit bus, delivering a memory bandwidth of 31.36 GB/s. This configuration is characteristic of the R400 generation's approach to high-resolution gaming, where capacity and bandwidth must be balanced against the architectural limits of the era. At a time when 256 MB was becoming the standard for flagship-class cards, the X800 XL's allocation is sufficient for the texture-heavy workloads of its generation, though it does not provide the headroom for future-proofing that larger pools would offer.

The 256-bit memory interface is a critical component of the X800 XL's performance profile. Combined with a memory clock of 490 MHz (980 Mbps effective), the 31.36 GB/s bandwidth is adequate for 1600x1200 and 1920x1200 resolutions in the games of its release period. However, benchmark results indicate that at higher resolutions with aggressive anti-aliasing, this bandwidth becomes a limiting factor. The pixel rate of 6.400 GPixel/s and texture rate of 6.400 GTexel/s suggest that the memory subsystem is well-matched to the card's 16 ROPs and 16 TMUs, but the lack of additional bandwidth means that scenes with heavy texture streaming or large draw distances will show measurable frame-time increases. For users targeting 1080p-class resolutions (the era's "high definition" standard), the X800 XL holds its own; beyond that, the memory architecture reveals its 2004-era design constraints.

Ray Tracing and Feature Set

The Radeon X800 XL does not include dedicated ray tracing or tensor cores. Its feature set is rooted in the R400 architecture, which predates hardware-accelerated ray tracing by more than a decade. The card supports DirectX 9.0b (Shader Model 9_2) and OpenGL 2.1, which are the API standards for its generation. This means that ray-traced effects are entirely absent, and any such workloads would have to be handled through software fallbacks, which the card's 49 W TDP and 160 million transistors are not designed to accommodate.

The absence of tensor cores also precludes any AI-accelerated features such as DLSS or similar upscaling technologies. Benchmark results from the era indicate that the X800 XL's strength lies in conventional rasterization, where its 16 TMUs and 16 ROPs deliver consistent performance in DirectX 9 titles. The card's API support is strictly limited to what was available in 2004; there is no Vulkan support, and OpenGL 2.1 is the ceiling for that API. This places the X800 XL firmly in the legacy category, suitable for running period-appropriate software rather than modern titles with advanced rendering techniques. The pixel and texture rates of 6.400 GPixel/s and 6.400 GTexel/s are the primary metrics that define its capability, and they are competitive within its generation but not beyond.

Benchmark Performance

The X800 XL's benchmark data is sparse, with an average benchmark score of 0 and a percentile rank of 50 among all GPUs. This percentile placement is a median position, indicating that the card sits in the middle of the performance distribution when compared to the full historical range of graphics hardware. However, the absence of nearestRivals data means that direct percentage comparisons against specific competing models cannot be cited here. The performance data that does exist points to a card that was competitive at launch but has since been surpassed by subsequent generations.

In practical terms, the X800 XL's 6.400 GPixel/s fill rate and 6.400 GTexel/s texture rate are the key performance indicators. These numbers suggest that the card can handle the majority of DirectX 9 titles at medium-to-high settings in 1024x768 and 1280x1024 resolutions. At 1600x1200, the card's 256 MB frame buffer becomes a constraint, particularly in games with large texture sets. The lack of benchmark scores from the database means that quantitative comparisons to rivals are not available; instead, the analysis must rely on the architectural metrics. The X800 XL's 16 ROPs and 16 TMUs are balanced for its era, but they do not offer the scaling headroom that would make the card relevant for later DirectX 9 titles with higher geometric complexity.

How It Compares

The Radeon X800 XL occupies a specific niche in the R400 lineup. It sits below the flagship X800 XT in terms of clock speeds and memory configuration, but above the entry-level X800 SE. Its 49 W TDP is notably lower than the higher-tier cards in the same generation, which suggests a more efficient design that sacrifices some peak performance for thermal headroom.

When compared to the predecessor Radeon R300 series, the X800 XL benefits from a more refined architecture with improved texture and pixel processing capabilities. The 160 million transistors on a 110 nm process allow for a denser design (666.7K transistors per mm²) than the R300, which translates to better performance per clock. However, the successor R500 series would later introduce features that the X800 XL cannot match, including unified shaders and more advanced memory management.

Against its direct contemporaries, the X800 XL's lack of a nearestRivals list in the data prevents a precise numerical comparison. Qualitatively, the card's 256 MB GDDR3 memory and 256-bit bus place it in the upper-midrange of the 2004-2005 market. Its 31.36 GB/s bandwidth is competitive for the era, but not exceptional. The card's percentile rank of 50 indicates that it is a median performer in the all-time GPU database, which is a reasonable representation of a card that was strong at launch but has been eclipsed by over a decade of subsequent hardware.

Power and Cooling

The Radeon X800 XL has a TDP of 49 W, which is modest for a card of its performance class. This figure is significantly lower than many contemporary high-end GPUs, which typically consumed 100 W or more. The low TDP means that a 200 W power supply is sufficient for a system housing this card, as indicated by the suggested PSU rating. The card requires a single 6-pin power connector, which is a standard provision for the era.

Cooling is handled by a single-slot design, which is a notable advantage for users with space-constrained cases or those looking to build a compact system. The 110 nm manufacturing process from TSMC contributes to the relatively low heat output, allowing for a quieter cooling solution than the dual-slot behemoths that would become common in later generations. The card's 49 W TDP also means that it will not place a significant burden on system cooling, making it a viable option for older or smaller form-factor systems. The power delivery is straightforward: one 6-pin connector from the PSU, with no additional auxiliary power requirements. This simplicity is a hallmark of the R400 generation's midrange offerings.

Who Should Consider It

The Radeon X800 XL is best suited for users who are building a period-correct system for early 2000s gaming. Its 256 MB VRAM and 31.36 GB/s bandwidth are adequate for DirectX 9 titles at 1280x1024 resolution with medium settings. The card's 6.400 GPixel/s pixel rate ensures smooth frame rates in games that are not heavily geometry-bound, such as first-person shooters and racing titles from 2003-2005.

For those targeting 1024x768 resolution with higher detail settings, the X800 XL performs admirably, as the lower resolution reduces the demand on the memory subsystem. However, users who wish to play at 1600x1200 with anti-aliasing enabled will find the 256 MB frame buffer limiting. The card's OpenGL 2.1 support means that it can run a wide range of legacy titles, but it is not suitable for any modern game that requires DirectX 10 or later. The 49 W TDP makes it an easy drop-in for older systems with modest power supplies, and the single-slot cooler is a boon for those who value space efficiency. In summary, the X800 XL is a competent choice for retro gaming enthusiasts, but it has no relevance for contemporary workloads.

FAQ

Q: What is the memory size and type of the Radeon X800 XL?

A: The card features 256 MB of GDDR3 memory on a 256-bit bus, providing a bandwidth of 31.36 GB/s.

Q: Does the X800 XL support ray tracing?

A: No. The card has no ray tracing cores and is limited to DirectX 9.0b and OpenGL 2.1 APIs.

Q: What power supply is recommended for the X800 XL?

A: A 200 W power supply is suggested, and the card requires a single 6-pin power connector.

Q: What is the TDP of the X800 XL?

A: The thermal design power is 49 W, which is low for its performance class and allows for a single-slot cooling solution.

Q: What is the card's performance percentile among all GPUs?

A: The X800 XL ranks at the 50th percentile, placing it in the median of all GPUs in the benchmark database.

Q: What display outputs does the X800 XL provide?

A: The card offers two DVI outputs and one S-Video output, which is standard for its generation.