AMD Radeon HD 7870 XT
About GPU
The AMD Radeon HD 7870 XT is a reliable mid-range GPU that offers a decent level of performance for gaming and multimedia tasks. With a base clock of 925MHz and a boost clock of 975MHz, this GPU is capable of handling a wide range of modern games at medium to high settings. The 2GB of GDDR5 memory and a memory clock of 1500MHz ensure smooth and responsive gameplay, while the 1536 shading units provide excellent rendering capabilities.
One of the standout features of the Radeon HD 7870 XT is its power efficiency. With a TDP of 185W, this GPU delivers impressive performance without consuming excessive amounts of power, making it an excellent choice for users looking to build a budget-friendly gaming PC. Additionally, the 512KB L2 cache helps to reduce latency and improve overall system responsiveness.
In terms of raw performance, the Radeon HD 7870 XT boasts a theoretical performance of 2.995 TFLOPS, making it more than capable of handling modern gaming titles and demanding multimedia tasks. While it may not be the most powerful GPU on the market, it offers a good balance of performance and price, making it a solid choice for budget-conscious gamers.
Overall, the AMD Radeon HD 7870 XT is a reliable and efficient GPU that offers good performance for its price range. Whether you're a casual gamer or a multimedia enthusiast, this GPU is definitely worth considering for your next PC build.
Basic
Label Name
AMD
Platform
Desktop
Launch Date
November 2012
Model Name
Radeon HD 7870 XT
Generation
Southern Islands
Base Clock
925MHz
Boost Clock
975MHz
Bus Interface
PCIe 3.0 x16
Transistors
4,313 million
Compute Units
24
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.
96
Foundry
TSMC
Process Size
28 nm
Architecture
GCN 1.0
Memory Specifications
Memory Size
2GB
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
1500MHz
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.
192.0 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.
31.20 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.
93.60 GTexel/s
FP64 (double)
?
An important metric for measuring GPU performance is floating-point computing capability. Double-precision floating-point numbers (64-bit) are required for scientific computing that demands a wide numeric range and high accuracy, while single-precision floating-point numbers (32-bit) are used for common multimedia and graphics processing tasks. Half-precision floating-point numbers (16-bit) are used for applications like machine learning, where lower precision is acceptable.
748.8 GFLOPS
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.
2.935
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.
1536
L1 Cache
16 KB (per CU)
L2 Cache
512KB
TDP
185W
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.
1.2
OpenCL Version
1.2
OpenGL
4.6
DirectX
12 (11_1)
Power Connectors
2x 6-pin
Shader Model
5.1
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
450W
Benchmarks
FP32 (float)
Score
2.935
TFLOPS
Compared to Other GPU
FP32 (float)
/ TFLOPS