RADEON

AMD Radeon HD 6850 X2

AMD graphics card specifications and benchmark scores

2 GB
VRAM
โ€”
MHz Boost
254W
TDP
256
Bus Width

AMD Radeon HD 6850 X2 Specifications

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Radeon HD 6850 X2 GPU Core

Shader units and compute resources

The AMD Radeon HD 6850 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
960
Shaders
960
TMUs
48
ROPs
32
Compute Units
12
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HD 6850 X2 Clock Speeds

GPU and memory frequencies

Clock speeds directly impact the Radeon HD 6850 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 Radeon HD 6850 X2 by AMD dynamically adjusts frequencies based on workload, temperature, and power limits to maximize performance while maintaining stability.

GPU Clock
800 MHz
Memory Clock
1050 MHz 4.2 Gbps effective
GDDR GDDR 6X 6X

AMD's Radeon HD 6850 X2 Memory

VRAM capacity and bandwidth

VRAM (Video RAM) is dedicated memory for storing textures, frame buffers, and shader data. The Radeon HD 6850 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
2 GB
VRAM
2,048 MB
Memory Type
GDDR5
VRAM Type
GDDR5
Memory Bus
256 bit
Bus Width
256-bit
Bandwidth
134.4 GB/s
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Radeon HD 6850 X2 by AMD Cache

On-chip cache hierarchy

On-chip cache provides ultra-fast data access for the HD 6850 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.

L1 Cache
8 KB (per CU)
L2 Cache
512 KB
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HD 6850 X2 Theoretical Performance

Compute and fill rates

Theoretical performance metrics provide a baseline for comparing the AMD Radeon HD 6850 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)
1.536 TFLOPS
Pixel Rate
25.60 GPixel/s
Texture Rate
38.40 GTexel/s
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TeraScale 2 Architecture & Process

Manufacturing and design details

The AMD Radeon HD 6850 X2 is built on AMD's TeraScale 2 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 HD 6850 X2 will perform in GPU benchmarks compared to previous generations.

Architecture
TeraScale 2
GPU Name
Barts
Process Node
40 nm
Foundry
TSMC
Transistors
1,700 million
Die Size
255 mmยฒ
Density
6.7M / mmยฒ
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AMD's Radeon HD 6850 X2 Power & Thermal

TDP and power requirements

Power specifications for the AMD Radeon HD 6850 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 Radeon HD 6850 X2 to maintain boost clocks without throttling.

TDP
254 W
TDP
254W
Power Connectors
2x 8-pin
Suggested PSU
600 W
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Radeon HD 6850 X2 by AMD Physical & Connectivity

Dimensions and outputs

Physical dimensions of the AMD Radeon HD 6850 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
Bus Interface
PCIe 2.0 x16
Display Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Display Outputs
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
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AMD API Support

Graphics and compute APIs

API support determines which games and applications can fully utilize the AMD Radeon HD 6850 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
11.2 (11_0)
DirectX
11.2 (11_0)
OpenGL
4.4
OpenGL
4.4
OpenCL
1.2
Shader Model
5.0
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Radeon HD 6850 X2 Product Information

Release and pricing details

The AMD Radeon HD 6850 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 Radeon HD 6850 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
Sep 2011
Production
End-of-life
Predecessor
Evergreen
Successor
Southern Islands

Radeon HD 6850 X2 Benchmark Scores

geekbench_openclSource

Geekbench OpenCL tests GPU compute performance using the cross-platform OpenCL API. This shows how AMD Radeon HD 6850 X2 handles parallel computing tasks like video encoding and scientific simulations. OpenCL is widely supported across different GPU vendors and platforms.

geekbench_opencl #482 of 582
3,977
1%
Max: 380,114
Compare with other GPUs

About AMD Radeon HD 6850 X2

The AMD Radeon HD 6850 X2 from AMD was a dual-GPU powerhouse designed for high-performance gaming and computational workloads, leveraging the TeraScale 2 architecture and 40 nm process to deliver robust capabilities. With 2 GB of GDDR5 VRAM and a PCIe 2.0 x16 interface, the AMD Radeon HD 6850 X2 excelled in handling demanding applications, though its 254 W TDP demanded a capable power supply. The cardโ€™s Geekbench OpenCL score of 3,977 points highlighted its strength in parallel processing tasks, making it a compelling choice for users prioritizing raw performance over energy efficiency. While its price-to-performance ratio was competitive in 2011, the AMD Radeon HD 6850 X2โ€™s dual-GPU design positioned it as a niche option for enthusiasts seeking maximum frame rates. Its segment placement as a high-end card meant it catered to users who could justify the power consumption and thermal output for superior graphical fidelity.

Investing in the AMD Radeon HD 6850 X2 from AMD required careful consideration of system requirements, as its 254 W TDP and dual-GPU setup demanded robust cooling and a high-wattage power supply. The AMD Radeon HD 6850 X2โ€™s 2 GB GDDR5 memory was substantial for its era, enabling smooth 1080p gaming and multitasking, though modern titles may struggle with its limited VRAM. Despite being released in 2011, the AMD Radeon HD 6850 X2 remains a viable option for retro gaming or lightweight workloads, offering a balance of performance and affordability for budget-conscious builders. Its investment value hinges on specific use cases, with the AMD Radeon HD 6850 X2 excelling in CrossFire configurations or legacy software. While its relevance has waned, the AMD Radeon HD 6850 X2 still holds appeal for those seeking a second-hand GPU with historical significance and proven capabilities.

The NVIDIA Equivalent of Radeon HD 6850 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 โ€ข 8 GB VRAM

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