GeForce GTX 1070 Ti vs Radeon HD 4870 X2

Intro

Compare that to the Radeon HD 4870 X2, which uses a 55 nm design. AMD has set the core speed at 750 MHz. The GDDR5 memory runs at a speed of 900 MHz on this specific model. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1070 Ti		180 Watts
Radeon HD 4870 X2		350 Watts
	Difference: 170 Watts (94%)

Memory Bandwidth

In theory, the GeForce GTX 1070 Ti should perform just a bit faster than the Radeon HD 4870 X2 overall. (explain)

GeForce GTX 1070 Ti		262144 MB/sec
Radeon HD 4870 X2		230400 MB/sec
	Difference: 31744 (14%)

Texel Rate

The GeForce GTX 1070 Ti is a lot (more or less 307%) more effective at anisotropic filtering than the Radeon HD 4870 X2. (explain)

GeForce GTX 1070 Ti		244264 Mtexels/sec
Radeon HD 4870 X2		60000 Mtexels/sec
	Difference: 184264 (307%)

Pixel Rate

The GeForce GTX 1070 Ti should be a lot (more or less 329%) more effective at FSAA than the Radeon HD 4870 X2, and also able to handle higher screen resolutions better. (explain)

GeForce GTX 1070 Ti		102848 Mpixels/sec
Radeon HD 4870 X2		24000 Mpixels/sec
	Difference: 78848 (329%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.