The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate. VIDEO CARD: AMD Radeon HD 3870 512Mb or better, NVIDIA GeForce 8800 GT 512 Mb or better, Intel HD 4000 integrated 512Mb or better PIXEL SHADER: 3.0 VERTEX SHADER: 3. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. It also features 320(64x5) SPUs, 16 Texture Address Units, and 16 Raster Operation Units. Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The Radeon HD 3870 512MB features a GPU clock speed of 775 MHz, and the 512 MB of GDDR3 memory runs at 900 MHz through a 256-bit bus.
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It is measured in millions of texels applied per second. Of course, your motherboard, CPU and memory do add to the equation but at the end of the day, it is the graphic card and for PC gaming, this is an extremely. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). This is calculated by multiplying the total amount of texture units by the core speed of the chip. Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. The maximum power consumption of this model is 106 Watt. The GPU supports PCI Express 2.0 interface, and requires 2 slots on the motherboard. It has a 256 bit wide memory interface, which translates to 57.6 GB/s memory bandwidth.
It especially helps with AA, HDR and high resolutions. The Radeon HD 4850 512MB should in theory be a small bit faster than the Radeon HD 3870 512MB overall. The Radeon HD 3870 comes with 1 GB of GDDR4 memory, clocked at 900 MHz.
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flagship Radeon HD 3870), but Nvidia stuck with the tried-and-true 65nm.
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The better the card's memory bandwidth, the better the card will be in general. Watching the ongoing race between AMD and Nvidia to build the ultimate graphics. Sapphire RADEON HD 3870 - Ultimate Edition - graphics card - Radeon HD 3870 - 512 MB overview and full product specs on CNET. If it uses DDR type memory, it must be multiplied by 2 once again. The number is worked out by multiplying the card's bus width by its memory speed. Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be moved across the external memory interface in a second.
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