Geforce GTX 1080 Ti vs Radeon HD 7870 XT

Intro

Compare those specs to the Radeon HD 7870 XT, which features core clock speeds of 925 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs along with 96 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Geforce GTX 1080 Ti		27629 points
Radeon HD 7870 XT		6390 points
	Difference: 21239 (332%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 XT		185 Watts
Geforce GTX 1080 Ti		250 Watts
	Difference: 65 Watts (35%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 1080 Ti should be 158% faster than the Radeon HD 7870 XT overall, because of its higher data rate. (explain)

Geforce GTX 1080 Ti		495616 MB/sec
Radeon HD 7870 XT		192000 MB/sec
	Difference: 303616 (158%)

Texel Rate

The Geforce GTX 1080 Ti should be much (about 273%) more effective at AF than the Radeon HD 7870 XT. (explain)

Geforce GTX 1080 Ti		331520 Mtexels/sec
Radeon HD 7870 XT		88800 Mtexels/sec
	Difference: 242720 (273%)

Pixel Rate

The Geforce GTX 1080 Ti should be a lot (approximately 340%) faster with regards to anti-aliasing than the Radeon HD 7870 XT, and will be able to handle higher screen resolutions better. (explain)

Geforce GTX 1080 Ti		130240 Mpixels/sec
Radeon HD 7870 XT		29600 Mpixels/sec
	Difference: 100640 (340%)

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.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 processed in one second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.