RADEON

ATI Radeon HD 3850 X2

AMD graphics card specifications and benchmark scores

512 MB
VRAM
MHz Boost
140W
TDP
256
Bus Width

ATI Radeon HD 3850 X2 Specifications

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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.

Shading Units
320
Shaders
320
TMUs
16
ROPs
16
Compute Units
4
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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.

GPU Clock
669 MHz
Memory Clock
828 MHz 1656 Mbps effective
GDDR GDDR 6X 6X

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.

Memory Size
512 MB
VRAM
512 MB
Memory Type
GDDR3
VRAM Type
GDDR3
Memory Bus
256 bit
Bus Width
256-bit
Bandwidth
52.99 GB/s
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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.

L2 Cache
256 KB
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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.

FP32 (Float)
428.2 GFLOPS
FP64 (Double)
85.63 GFLOPS (1:5)
Pixel Rate
10.70 GPixel/s
Texture Rate
10.70 GTexel/s
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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.

Architecture
TeraScale
GPU Name
RV670
Process Node
55 nm
Foundry
TSMC
Transistors
666 million
Die Size
192 mm²
Density
3.5M / mm²
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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.

TDP
140 W
TDP
140W
Suggested PSU
300 W
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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.

Slot Width
Dual-slot
Length
267 mm 10.5 inches
Bus Interface
PCIe 2.0 x16
Display Outputs
2x DVI1x S-Video
Display Outputs
2x DVI1x S-Video
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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.

DirectX
10.1 (10_1)
DirectX
10.1 (10_1)
OpenGL
3.3 (full) 4.0 (partial)
OpenGL
3.3 (full) 4.0 (partial)
Shader Model
4.1
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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.

Manufacturer
AMD
Release Date
Apr 2008
Launch Price
349 USD
Production
End-of-life
Predecessor
Radeon R500 PCIe
Successor
Radeon R700

ATI Radeon HD 3850 X2 Benchmark Scores

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No benchmark data available for this GPU.

About ATI Radeon HD 3850 X2

Launched in April 2008 at a price point of $349 USD, the ATI Radeon HD 3850 X2 represented a strategic dual-GPU solution from AMD, targeting professionals who required enhanced graphical throughput without an immediate architectural leap. Built on the 55nm TeraScale architecture, this card leveraged PCI Express 2.0 interface bandwidth to manage two GPUs on a single board, each paired with 512MB of GDDR3 memory. Its 140W TDP indicated a balanced consideration of performance against thermal and power constraints typical in enterprise environments. For professional workloads, this configuration offered a tangible increase in parallel processing capability, particularly beneficial for early-stage GPU-accelerated tasks. The card's value proposition was clear: deliver scalable performance for compute-intensive applications by combining two mature RV670 cores. This made the Radeon HD 3850 X2 a relevant consideration for cost-conscious studios and technical departments evaluating render farm nodes or primary designer workstations where raw pixel and geometry throughput were primary metrics. Its release provided a stop-gap solution in the professional segment, demonstrating AMD's commitment to multi-GPU strategies for accelerating specific workflow bottlenecks.

In assessing software compatibility and enterprise features, this dual-GPU graphics card presented both opportunities and challenges for IT deployment. Driver support and application profiling were critical to harnessing the full potential of the dual-chip design, especially in professional 3D rendering and computational software that could distribute workloads across multiple processors. Key enterprise considerations for this hardware included:

  • Stability across certified professional driver stacks for mainstream CAD and DCC applications.
  • Scalable rendering performance in supported applications leveraging multi-GPU directives.
  • Thermal management and form factor compatibility for standardized workstation chassis.
  • Power delivery consistency under sustained full-load computational scenarios.
  • Long-term vendor support lifecycle for business-critical visual computing tasks.

The product's architecture necessitated robust platform integration to mitigate potential micro-stuttering or resource allocation imbalances inherent in early multi-GPU implementations. For enterprises, the decision to deploy this solution hinged on a detailed analysis of in-house software optimization rather than theoretical peak performance. While not featuring dedicated enterprise management tools, its performance profile offered a data-driven upgrade path from single-GPU predecessors for specific, well-defined professional use cases. Ultimately, the dual-GPU ATI offering served as a practical proof-of-concept for multi-processor graphics solutions in a professional context, balancing cost against measurable gains in supported workflows.

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.

NVIDIA GeForce RTX 2080

NVIDIA • 8 GB VRAM

View Specs Compare

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