RADEON

AMD Radeon R6 M255DX

AMD graphics card specifications and benchmark scores

VRAM
855
MHz Boost
TDP
Bus Width

AMD Radeon R6 M255DX Specifications

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Radeon R6 M255DX GPU Core

Shader units and compute resources

The AMD Radeon R6 M255DX 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
20
ROPs
8
Compute Units
5
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R6 M255DX Clock Speeds

GPU and memory frequencies

Clock speeds directly impact the Radeon R6 M255DX'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 R6 M255DX by AMD dynamically adjusts frequencies based on workload, temperature, and power limits to maximize performance while maintaining stability.

Base Clock
780 MHz
Base Clock
780 MHz
Boost Clock
855 MHz
Boost Clock
855 MHz
Memory Clock
System Shared
GDDR GDDR 6X 6X

AMD's Radeon R6 M255DX Memory

VRAM capacity and bandwidth

VRAM (Video RAM) is dedicated memory for storing textures, frame buffers, and shader data. The Radeon R6 M255DX'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
System Shared
Memory Type
System Shared
VRAM Type
System Shared
Memory Bus
System Shared
Bandwidth
System Dependent
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Radeon R6 M255DX by AMD Cache

On-chip cache hierarchy

On-chip cache provides ultra-fast data access for the R6 M255DX, 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
128 KB
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R6 M255DX Theoretical Performance

Compute and fill rates

Theoretical performance metrics provide a baseline for comparing the AMD Radeon R6 M255DX 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)
547.2 GFLOPS
FP64 (Double)
34.20 GFLOPS (1:16)
Pixel Rate
6.840 GPixel/s
Texture Rate
17.10 GTexel/s
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GCN 1.0 Architecture & Process

Manufacturing and design details

The AMD Radeon R6 M255DX is built on AMD's GCN 1.0 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 R6 M255DX will perform in GPU benchmarks compared to previous generations.

Architecture
GCN 1.0
GPU Name
Jet
Process Node
28 nm
Foundry
TSMC
Transistors
690 million
Die Size
56 mm²
Density
12.3M / mm²
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AMD's Radeon R6 M255DX Power & Thermal

TDP and power requirements

Power specifications for the AMD Radeon R6 M255DX 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 R6 M255DX to maintain boost clocks without throttling.

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Radeon R6 M255DX by AMD Physical & Connectivity

Dimensions and outputs

Physical dimensions of the AMD Radeon R6 M255DX 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
IGP
Bus Interface
IGP
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 AMD Radeon R6 M255DX. 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
12 (11_1)
DirectX
12 (11_1)
OpenGL
4.6
OpenGL
4.6
Vulkan
1.2.170
Vulkan
1.2.170
OpenCL
2.1 (1.2)
Shader Model
6.5 (5.1)
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Radeon R6 M255DX Product Information

Release and pricing details

The AMD Radeon R6 M255DX 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 R6 M255DX 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 2014
Production
End-of-life

Radeon R6 M255DX Benchmark Scores

geekbench_vulkanSource

Geekbench Vulkan tests GPU compute using the modern low-overhead Vulkan API. This shows how AMD Radeon R6 M255DX performs with next-generation graphics and compute workloads.

geekbench_vulkan #347 of 386
4,867
1%
Max: 379,571

About AMD Radeon R6 M255DX

AMD Radeon R6 M255DX: Your Go-To Graphics Powerhouse

The AMD Radeon R6 M255DX sits at an interesting spot in the graphics card hierarchy, blending affordability with capable performance for everyday computing and light gaming needs. Based on the GCN 1.0 architecture and manufactured on a 28 nm process, this integrated GPU packs a decent punch, especially for its time, with a base clock of 780 MHz and a boost clock reaching up to 855 MHz. While VRAM is shared with the system (a common approach in integrated graphics), the R6 M255DX handles modern rendering features like DirectX 11.2 and OpenGL 4.3 smoothly, ensuring you can enjoy contemporary games and applications without constant performance hiccups. It’s perfect for users who need a balance between visual fidelity and power efficiency, staying true to its name by delivering reliable graphics performance without breaking the bank or the planet.

Gaming enthusiasts might find the Radeon R6 M255DX surprisingly capable, capable of running some older titles at mid-to-low settings, making it an excellent choice for casual gamers or those with budget-conscious rigs. Its onboard power requirements are modest, making it a great fit for entry-level laptops and compact systems that prioritize energy savings. Whether you're streaming, watching 4K media, or tackling demanding creative tasks, this GPU handles it with ease, thanks to its optimized architecture and clock speeds. For optimal use cases, the Radeon R6 M255DX excels in general-purpose computing environments where graphics acceleration is required but dedicated cards are unnecessary think office setups, family computers, or entry-level workstations. Its versatile nature makes it a smart investment for users who seek a graphics solution that adapts to a range of tasks while keeping things running smoothly.

  • GCN 1.0 architecture ensures compatibility with modern graphics APIs like DirectX 11.2 and OpenGL 4.3.
  • Boost clock of 855 MHz delivers occasional spiked performance for demanding applications.
  • Integrated design keeps power consumption in check, ideal for laptops and compact builds.
  • Smooth gaming capabilities for older titles, ensuring an enjoyable experience without heavy hardware demands.
  • Balanced performance-to-price ratio makes it a solid choice for budget-conscious users.
  • System-shared VRAM allows housing in a wide range of devices, maximizing compatibility.

The NVIDIA Equivalent of Radeon R6 M255DX

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

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