RADEON

ATI Mobility Radeon HD 4850 X2

AMD graphics card specifications and benchmark scores

1 GB
VRAM
MHz Boost
TDP
256
Bus Width

ATI Mobility Radeon HD 4850 X2 Specifications

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ATI Mobility Radeon HD 4850 X2 GPU Core

Shader units and compute resources

The ATI Mobility Radeon HD 4850 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
800
Shaders
800
TMUs
40
ROPs
16
Compute Units
10
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ATI Mobility Radeon HD 4850 X2 Clock Speeds

GPU and memory frequencies

Clock speeds directly impact the ATI Mobility Radeon HD 4850 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 Mobility Radeon HD 4850 X2 by AMD dynamically adjusts frequencies based on workload, temperature, and power limits to maximize performance while maintaining stability.

GPU Clock
500 MHz
Memory Clock
700 MHz 2.8 Gbps effective
GDDR GDDR 6X 6X

AMD's ATI Mobility Radeon HD 4850 X2 Memory

VRAM capacity and bandwidth

VRAM (Video RAM) is dedicated memory for storing textures, frame buffers, and shader data. The ATI Mobility Radeon HD 4850 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
1024 MB
VRAM
1,024 MB
Memory Type
GDDR5
VRAM Type
GDDR5
Memory Bus
256 bit
Bus Width
256-bit
Bandwidth
89.60 GB/s
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ATI Mobility Radeon HD 4850 X2 by AMD Cache

On-chip cache hierarchy

On-chip cache provides ultra-fast data access for the ATI Mobility Radeon HD 4850 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
16 KB (per CU)
L2 Cache
256 KB
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ATI Mobility Radeon HD 4850 X2 Theoretical Performance

Compute and fill rates

Theoretical performance metrics provide a baseline for comparing the ATI Mobility Radeon HD 4850 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)
800.0 GFLOPS
FP64 (Double)
160.0 GFLOPS (1:5)
Pixel Rate
8.000 GPixel/s
Texture Rate
20.00 GTexel/s
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TeraScale Architecture & Process

Manufacturing and design details

The ATI Mobility Radeon HD 4850 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 Mobility Radeon HD 4850 X2 will perform in GPU benchmarks compared to previous generations.

Architecture
TeraScale
GPU Name
M98
Process Node
55 nm
Foundry
TSMC
Transistors
956 million
Die Size
256 mm²
Density
3.7M / mm²
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AMD's ATI Mobility Radeon HD 4850 X2 Power & Thermal

TDP and power requirements

Power specifications for the ATI Mobility Radeon HD 4850 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 Mobility Radeon HD 4850 X2 to maintain boost clocks without throttling.

Power Connectors
None
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ATI Mobility Radeon HD 4850 X2 by AMD Physical & Connectivity

Dimensions and outputs

Physical dimensions of the ATI Mobility Radeon HD 4850 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
MXM Module
Bus Interface
PCIe 2.0 x16
Display Outputs
Portable Device Dependent
Display Outputs
Portable Device Dependent
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AMD API Support

Graphics and compute APIs

API support determines which games and applications can fully utilize the ATI Mobility Radeon HD 4850 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
OpenGL
3.3
OpenCL
1.1
Shader Model
4.1
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ATI Mobility Radeon HD 4850 X2 Product Information

Release and pricing details

The ATI Mobility Radeon HD 4850 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 Mobility Radeon HD 4850 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
Jan 2009
Production
End-of-life
Predecessor
M8x
Successor
Manhattan

ATI Mobility Radeon HD 4850 X2 Benchmark Scores

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No benchmark data available for this GPU.

About ATI Mobility Radeon HD 4850 X2

The ATI Mobility Radeon HD 4850 X2 was a true mobile powerhouse upon its release, representing AMD's ambitious push to bring uncompromising desktop-level gaming to high-end laptops. This dual-GPU behemoth packed two RV770 cores onto a single MXM module, a daring engineering feat for its time. Gamers seeking the ultimate portable rig in 2009 saw this chip as the key to running demanding titles with high-detail settings, a rarity for notebooks back then. The promise of the Mobility Radeon HD 4850 X2 was simple: to shatter the performance ceiling of mobile graphics and deliver a genuinely immersive experience on the go. Its architecture leveraged the TeraScale prowess to handle complex shader models and lighting effects that were defining the era's visual frontier. For those who demanded the best, this graphics solution was the undisputed champion, setting a new benchmark for what a gaming laptop could achieve.

Diving into its guts, the specs of this dual-GPU mobile solution were impressive, headlined by its full gigabyte of speedy GDDR5 memory. This memory bandwidth was critical in feeding two hungry graphics processors, minimizing bottlenecks and allowing for high-resolution textures and complex scenes. Built on a 55nm process, the chip balanced raw performance with the thermal constraints of a laptop chassis, though cooling was an immense challenge for system integrators. The inclusion of modern rendering features like DirectX 10.1 support meant games could utilize advanced anti-aliasing and post-processing effects for smoother, more realistic images. This mobile graphics monster didn't just keep up with contemporary desktop mid-range cards; in many benchmarks, it aimed to surpass them. The engineering behind this component was a clear statement that mobile gaming was no longer about compromise.

However, wielding such power in a laptop came with significant considerations, primarily heat dissipation and power draw, which directly impacted system design and battery life. Laptops equipped with the HD 4850 X2 dual-GPU were inevitably thick, heavy, and housed elaborate cooling systems with multiple heatpipes and fans. The acoustic profile under load was a trade-off users had to accept for that level of performance, a constant reminder of the silicon firepower within. Optimal use cases were clear: this was a desktop replacement for LAN parties and enthusiasts who prioritized frame rates over portability. It excelled in driving high-resolution displays on 17-inch and larger mobile workstations, making it a favorite for gaming and content creation on the move. The legacy of this ATI mobile flagship is that it proved extreme performance could be packaged for travel, albeit with some concessions.

Today, the legacy of AMD's mobile dual-GPU champion is defined by its ambitious push against technological limits. It served a niche but passionate segment of gamers who refused to accept that laptop gaming meant lower settings. While modern integrated and single-die mobile GPUs have since achieved greater efficiency, the Mobility Radeon HD 4850 X2 remains a landmark in the pursuit of portable performance. It demonstrated that with innovative engineering, the gap between desktop and laptop gaming could be dramatically narrowed. For collectors and hardware historians, this piece of engineering represents a bold, power-hungry era in mobile graphics. Its story is a testament to a time when brute force was a valid and exciting path to mobile gaming supremacy.

The NVIDIA Equivalent of ATI Mobility Radeon HD 4850 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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