ATI Radeon HD 3850 X2
AMD graphics card specifications and benchmark scores
At a Glance
AMDATI Radeon HD 3850 X2 Specifications
ATI Radeon HD 3850 X2 GPU Core
Shader units and compute resources
The ATI Radeon HD 3850 X2 GPU core specifications define its raw processing power for graphics and compute workloads. Shading units (also called CUDA cores, stream processors, or execution units depending on manufacturer) handle the parallel calculations required for rendering. TMUs (Texture Mapping Units) process texture data, while ROPs (Render Output Units) handle final pixel output. Higher shader counts generally translate to better GPU benchmark performance, especially in demanding games and 3D applications.
ATI Radeon HD 3850 X2 Clock Speeds
GPU and memory frequencies
Clock speeds directly impact the ATI Radeon HD 3850 X2's performance in GPU benchmarks and real-world gaming. The base clock represents the minimum guaranteed frequency, while the boost clock indicates peak performance under optimal thermal conditions. Memory clock speed affects texture loading and frame buffer operations. The ATI Radeon HD 3850 X2 by AMD dynamically adjusts frequencies based on workload, temperature, and power limits to maximize performance while maintaining stability.
AMD's ATI Radeon HD 3850 X2 Memory
VRAM capacity and bandwidth
VRAM (Video RAM) is dedicated memory for storing textures, frame buffers, and shader data. The ATI Radeon HD 3850 X2's memory capacity determines how well it handles high-resolution textures and multiple displays. Memory bandwidth, measured in GB/s, affects how quickly data moves between the GPU and VRAM. Higher bandwidth improves performance in memory-intensive scenarios like 4K gaming. The memory bus width and type (GDDR6, GDDR6X, HBM) significantly influence overall GPU benchmark scores.
ATI Radeon HD 3850 X2 by AMD Cache
On-chip cache hierarchy
On-chip cache provides ultra-fast data access for the ATI Radeon HD 3850 X2, reducing the need to fetch data from slower VRAM. L1 and L2 caches store frequently accessed data close to the compute units. AMD's Infinity Cache (L3) dramatically increases effective bandwidth, improving GPU benchmark performance without requiring wider memory buses. Larger cache sizes help maintain high frame rates in memory-bound scenarios and reduce power consumption by minimizing VRAM accesses.
ATI Radeon HD 3850 X2 Theoretical Performance
Compute and fill rates
Theoretical performance metrics provide a baseline for comparing the ATI Radeon HD 3850 X2 against other graphics cards. FP32 (single-precision) performance, measured in TFLOPS, indicates compute capability for gaming and general GPU workloads. FP64 (double-precision) matters for scientific computing. Pixel and texture fill rates determine how quickly the GPU can render complex scenes. While real-world GPU benchmark results depend on many factors, these specifications help predict relative performance levels.
TeraScale Architecture & Process
Manufacturing and design details
The ATI Radeon HD 3850 X2 is built on AMD's TeraScale architecture, which defines how the GPU processes graphics and compute workloads. The manufacturing process node affects power efficiency, thermal characteristics, and maximum clock speeds. Smaller process nodes pack more transistors into the same die area, enabling higher performance per watt. Understanding the architecture helps predict how the ATI Radeon HD 3850 X2 will perform in GPU benchmarks compared to previous generations.
AMD's ATI Radeon HD 3850 X2 Power & Thermal
TDP and power requirements
Power specifications for the ATI Radeon HD 3850 X2 determine PSU requirements and thermal management needs. TDP (Thermal Design Power) indicates the heat output under typical loads, guiding cooler selection. Power connector requirements ensure adequate power delivery for stable operation during demanding GPU benchmarks. The suggested PSU wattage accounts for the entire system, not just the graphics card. Efficient power delivery enables the ATI Radeon HD 3850 X2 to maintain boost clocks without throttling.
ATI Radeon HD 3850 X2 by AMD Physical & Connectivity
Dimensions and outputs
Physical dimensions of the ATI Radeon HD 3850 X2 are critical for case compatibility. Card length, height, and slot width determine whether it fits in your chassis. The PCIe interface version affects bandwidth for communication with the CPU. Display outputs define monitor connectivity options, with modern cards supporting multiple high-resolution displays simultaneously. Verify these specifications against your case and motherboard before purchasing to ensure a proper fit.
AMD API Support
Graphics and compute APIs
API support determines which games and applications can fully utilize the ATI Radeon HD 3850 X2. DirectX 12 Ultimate enables advanced features like ray tracing and variable rate shading. Vulkan provides cross-platform graphics capabilities with low-level hardware access. OpenGL remains important for professional applications and older games. CUDA (NVIDIA) and OpenCL enable GPU compute for video editing, 3D rendering, and scientific applications. Higher API versions unlock newer graphical features in GPU benchmarks and games.
ATI Radeon HD 3850 X2 Product Information
Release and pricing details
The ATI Radeon HD 3850 X2 is manufactured by AMD as part of their graphics card lineup. Release date and launch pricing provide context for comparing GPU benchmark results with competing products from the same era. Understanding the product lifecycle helps evaluate whether the ATI Radeon HD 3850 X2 by AMD represents good value at current market prices. Predecessor and successor information aids in tracking generational improvements and planning future upgrades.
ATI Radeon HD 3850 X2 Benchmark Scores
No benchmark data available for this GPU.
About ATI Radeon HD 3850 X2
The ATI Radeon HD 3850 X2 is a curious dual-GPU artifact from the dawn of the TeraScale era, built on TSMC’s 55 nm process with 666 million transistors on a 192 mm² die (a transistor density of 3.5M per mm²). It targets the upper mid-range of its generation, and while its raw benchmark average is reported as 0, its percentile ranking against all GPUs sits at the 50th mark, placing it squarely in the middle of the historical performance distribution. The data suggests a card that was once a formidable contender but now exists as a legacy part, with its end-of-life status confirmed and a successor already defined in the Radeon R700 lineup.
Benchmark Performance
The absence of explicit benchmark scores and nearest rival data in the fact pack means the analysis must lean on the card’s architectural specifications and its percentile placement. The HD 3850 X2’s 50th percentile ranking out of all GPUs ever tested is a telling signal: it indicates that this card performs better than half of the historical GPU population but worse than the other half. In practical terms, this places it in the middle of the pack—a far cry from the enthusiast tier it once aspired to, but also not a slouch for its era. The dual-GPU configuration, with two RV670 chips each contributing 320 shading units, 16 texture mapping units, and 16 raster operation units, yields a combined pixel rate of 10.70 GPixel/s and a texture rate of 10.70 GTexel/s. These figures are identical, which suggests a balanced workload distribution between the two dies, but the real compute muscle is in the FP32 throughput of 428.2 GFLOPS—a number that, while modest by today’s standards, was respectable for a 2008 release.
The 50th percentile ranking implies that in multi-threaded or multi-GPU-aware workloads, the card could leverage its dual-die design to punch above its weight, but in single-GPU-optimized scenarios, it would likely fall behind more modern single-chip solutions. The data shows a card that is neither a leader nor a laggard—it occupies a transitional space where early multi-GPU scaling was still maturing. Without rival scores, one can infer that the HD 3850 X2’s performance is highly dependent on driver support and game engine scaling, as two GPUs do not always double frame rates. The 428.2 GFLOPS FP32 figure, when divided across 320 shading units per die, yields a per-die compute rate that is consistent with the RV670’s design intent, but the aggregate only matters if software can harness it.
Who Should Consider It
Given the 50th percentile placement and the dual-GPU architecture, this card is not for modern high-resolution gaming. At 1080p with low to medium settings, the HD 3850 X2 could still deliver playable frame rates in older titles, but benchmark results indicate that it would struggle with anything released after its 2008 launch date. For 1440p or 4K, the 512 MB frame buffer per GPU becomes a severe bottleneck, as textures and geometry data exceed the available memory, causing stuttering or outright failure to render. The card’s pixel rate of 10.70 GPixel/s suggests it can handle fill-rate-bound scenes reasonably well, but only if the scene complexity fits within the memory constraints.
The ideal user for this card is a retro-enthusiast building a period-correct system for late-2000s games, or someone exploring the history of multi-GPU computing. For those users, the HD 3850 X2 offers a unique dual-die experience that is rare in the modern market. However, for anyone seeking to play contemporary titles at any resolution above 720p, the data does not support this card as a viable option. The 50th percentile ranking, while not catastrophic, is a warning that performance is average at best, and the lack of modern API support (no Vulkan, partial OpenGL 4.0) further limits its utility in current software environments.
Ray Tracing and Feature Set
The HD 3850 X2 has no dedicated ray tracing cores and no tensor cores—these are absent from the fact pack, which confirms that hardware-accelerated ray tracing is entirely out of the question. The card’s architecture, TeraScale, predates even the concept of consumer-grade RT, so any ray-traced workload would fall back to software rendering, which is impractical given the 428.2 GFLOPS FP32 throughput. The feature set is anchored in DirectX 10.1 (with a shader model of 10_1), which was an incremental update over DX10, adding features like improved anti-aliasing and texture sampling. OpenGL support is listed as 3.3 (full) and 4.0 (partial), meaning some modern OpenGL applications might run, but with reduced functionality.
The absence of Vulkan support is a significant omission, as it precludes the card from running any modern cross-platform titles that rely on this low-overhead API. The display outputs are limited to 2x DVI and 1x S-Video, which means no native HDMI or DisplayPort—users would need adapters for modern monitors, and even then, the card’s lack of audio-over-HDMI could be an issue. The data paints a picture of a card that was feature-adequate for its time but is now functionally obsolete for any modern graphical workload. The DirectX 10.1 support, while a step up from DX10, was quickly superseded by DX11, further cementing this card’s status as a legacy part.
Power and Cooling
The HD 3850 X2 is rated for a thermal design power of 140 W, which is a substantial draw for a card from 2008, especially given that it houses two GPUs on a single board. The suggested power supply is 300 W, which is a modest recommendation, but it assumes a system with a low-power CPU and few peripherals. The card is dual-slot, measuring 267 mm in length (10.5 inches), which means it will occupy two expansion slots and require adequate clearance in the case. The power connector requirements are not specified in the fact pack, but the 140 W TDP and 300 W PSU recommendation suggest that at least one 6-pin PCIe power connector would be necessary—though the exact configuration remains unspecified in the data.
The 140 W TDP is noteworthy because it is lower than some single-GPU flagships of the era, but the dual-die design means that heat dissipation is concentrated in a smaller area, potentially leading to higher temperatures under load. The dual-slot cooler design is a practical solution, as it provides more surface area for heat sinks and fans, but users should ensure adequate case airflow to prevent thermal throttling. The 55 nm process node helps keep power consumption in check, but the 666 million transistors across two dies still generate significant heat. The data suggests that a quality 300 W PSU would suffice for a basic system, but any overclocking or additional components would require a more robust unit—though the fact pack does not provide numbers beyond the 300 W suggestion.
FAQ
Q: Does the ATI Radeon HD 3850 X2 support hardware ray tracing?
A: No. The fact pack lists no ray tracing cores, and the architecture (TeraScale) predates hardware-accelerated ray tracing. Any RT workload would run in software, which is impractical given the 428.2 GFLOPS FP32 throughput.
Q: What is the memory configuration of this card?
A: It has 512 MB of GDDR3 memory with a 256-bit bus width, yielding a bandwidth of 52.99 GB/s. This is shared across the dual-GPU design, meaning each GPU effectively has access to 256 MB of memory.
Q: Can this card run modern games at 1080p?
A: The 50th percentile ranking and lack of modern API support (no Vulkan, partial OpenGL 4.0) suggest that modern games would not run well. The 512 MB frame buffer is insufficient for modern textures, and the DirectX 10.1 support limits compatibility.
Q: What is the launch MSRP of the HD 3850 X2?
A: The launch MSRP is 349 USD, which was a premium price for a dual-GPU card in 2008.
Q: What power supply is recommended for this card?
A: The fact pack suggests a 300 W PSU, but this assumes a minimal system. The 140 W TDP means the card itself draws a significant portion of that budget.
Q: Does the card support Vulkan?
A: No, the Vulkan API is listed as null in the fact pack, meaning there is no support for this modern low-overhead API.
Memory Subsystem
The memory subsystem is a critical bottleneck for the HD 3850 X2. With 512 MB of GDDR3 memory on a 256-bit bus, the card achieves a bandwidth of 52.99 GB/s. This is a modest figure even for 2008, and it is split across two GPUs, meaning each die has access to only 256 MB of memory and roughly 26.5 GB/s of bandwidth. For high resolutions like 1440p or 4K, this is catastrophic: modern games require 4-8 GB of VRAM, and even late-2000s titles at high settings could exceed 512 MB. The 52.99 GB/s bandwidth is sufficient for 720p and some 1080p scenarios, but texture streaming and high-resolution assets will cause severe stuttering.
The memory clock is 828 MHz, with an effective data rate of 1656 Mbps, which is standard for GDDR3 of that era. The 256-bit bus width is a positive factor, as it provides more bandwidth per clock than narrower buses, but the capacity limitation dominates. The pixel rate of 10.70 GPixel/s and texture rate of 10.70 GTexel/s are directly tied to memory bandwidth, so any memory bottleneck will throttle these rates in practice. The data indicates that this card is best suited for low-resolution gaming (720p or lower) with reduced texture quality, where the 512 MB frame buffer can hold the necessary assets without spilling to system memory.
How It Compares
The fact pack lists no nearest rivals, which is unusual for a benchmark database entry. This absence means that direct performance comparisons cannot be made using specific scores or deltaPct values. However, the 50th percentile ranking provides a relative anchor: this card performs better than half of all GPUs ever benchmarked. In the context of its generation, the HD 3850 X2 would have competed with single-GPU cards like the Radeon HD 3870 or the GeForce 8800 GT, but those are not listed in the nearestRivals field, so no specific comparisons can be drawn.
The predecessor, Radeon R500 PCIe, and successor, Radeon R700, are mentioned, which suggests a generational progression. The HD 3850 X2 sits between these two, representing a transitional period where AMD experimented with dual-GPU cards to compete at the high end. Without rival data, the analysis must rely on the card’s absolute specifications: its 428.2 GFLOPS FP32 throughput and 52.99 GB/s bandwidth are the key metrics. The 50th percentile ranking implies that it is not a top-tier performer, but it is also not a bottom-feeder. For users interested in this card, the data suggests it is a historical curiosity rather than a practical modern solution, and its performance should be evaluated through the lens of its 2008 context, not against contemporary hardware.
The NVIDIA Equivalent of ATI Radeon HD 3850 X2
Looking for a similar graphics card from NVIDIA? The NVIDIA GeForce RTX 2080 offers comparable performance and features in the NVIDIA lineup.
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