AMD Radeon HD 6870 X2
About GPU
The AMD Radeon HD 6870 X2 is a powerful GPU designed for desktop gaming and multimedia applications. With a memory size of 1024MB and a memory type of GDDR5, it is able to handle high-resolution textures and complex visual effects with ease. The memory clock speed of 1050MHz ensures smooth and fast data transfer, while the 1120 shading units provide excellent rendering performance.
One of the standout features of the Radeon HD 6870 X2 is its L2 cache size of 512KB, which helps to reduce memory latency and improve overall GPU performance. With a thermal design power (TDP) of 300W, this GPU does require a substantial amount of power, so users should ensure they have adequate cooling and power supply for their system.
In terms of performance, the Radeon HD 6870 X2 boasts a theoretical performance of 2.016 TFLOPS, making it more than capable of handling modern games and demanding graphical tasks. Whether it's high-resolution gaming, video editing, or 3D rendering, this GPU is up to the task.
Overall, the AMD Radeon HD 6870 X2 is a reliable and powerful GPU that offers great performance for desktop users. Its high memory size, fast memory clock speed, and large number of shading units make it a solid choice for anyone looking for a GPU that can handle the latest games and graphics-intensive applications. However, its high power consumption and thermal output may be a consideration for some users.
Basic
Label Name
AMD
Platform
Desktop
Launch Date
July 2011
Model Name
Radeon HD 6870 X2
Generation
Northern Islands
Bus Interface
PCIe 2.0 x16
Transistors
1,700 million
Compute Units
14
TMUs
?
Texture Mapping Units (TMUs) serve as components of the GPU, which are capable of rotating, scaling, and distorting binary images, and then placing them as textures onto any plane of a given 3D model. This process is called texture mapping.
56
Foundry
TSMC
Process Size
40 nm
Architecture
TeraScale 2
Memory Specifications
Memory Size
1024MB
Memory Type
GDDR5
Memory Bus
?
The memory bus width refers to the number of bits of data that the video memory can transfer within a single clock cycle. The larger the bus width, the greater the amount of data that can be transmitted instantaneously, making it one of the crucial parameters of video memory. The memory bandwidth is calculated as: Memory Bandwidth = Memory Frequency x Memory Bus Width / 8. Therefore, when the memory frequencies are similar, the memory bus width will determine the size of the memory bandwidth.
256bit
Memory Clock
1050MHz
Bandwidth
?
Memory bandwidth refers to the data transfer rate between the graphics chip and the video memory. It is measured in bytes per second, and the formula to calculate it is: memory bandwidth = working frequency × memory bus width / 8 bits.
134.4 GB/s
Theoretical Performance
Pixel Rate
?
Pixel fill rate refers to the number of pixels a graphics processing unit (GPU) can render per second, measured in MPixels/s (million pixels per second) or GPixels/s (billion pixels per second). It is the most commonly used metric to evaluate the pixel processing performance of a graphics card.
28.80 GPixel/s
Texture Rate
?
Texture fill rate refers to the number of texture map elements (texels) that a GPU can map to pixels in a single second.
50.40 GTexel/s
FP32 (float)
?
An important metric for measuring GPU performance is floating-point computing capability. Single-precision floating-point numbers (32-bit) are used for common multimedia and graphics processing tasks, while double-precision floating-point numbers (64-bit) are required for scientific computing that demands a wide numeric range and high accuracy. Half-precision floating-point numbers (16-bit) are used for applications like machine learning, where lower precision is acceptable.
1.976
TFLOPS
Miscellaneous
Shading Units
?
The most fundamental processing unit is the Streaming Processor (SP), where specific instructions and tasks are executed. GPUs perform parallel computing, which means multiple SPs work simultaneously to process tasks.
1120
L1 Cache
8 KB (per CU)
L2 Cache
512KB
TDP
300W
Vulkan Version
?
Vulkan is a cross-platform graphics and compute API by Khronos Group, offering high performance and low CPU overhead. It lets developers control the GPU directly, reduces rendering overhead, and supports multi-threading and multi-core processors.
N/A
OpenCL Version
1.2
OpenGL
4.4
DirectX
11.2 (11_0)
Shader Model
5.0
ROPs
?
The Raster Operations Pipeline (ROPs) is primarily responsible for handling lighting and reflection calculations in games, as well as managing effects like anti-aliasing (AA), high resolution, smoke, and fire. The more demanding the anti-aliasing and lighting effects in a game, the higher the performance requirements for the ROPs; otherwise, it may result in a sharp drop in frame rate.
32
Suggested PSU
700W
Benchmarks
FP32 (float)
Score
1.976
TFLOPS
Compared to Other GPU
FP32 (float)
/ TFLOPS