Geforce GTX 1080 Ti vs Radeon HD 7870 XT

Intro

Compare that to the Radeon HD 7870 XT, which makes use of a 28 nm design. AMD has clocked the core frequency at 925 MHz. The GDDR5 RAM is set to run at a speed of 1500 MHz on this particular card. It features 1536 SPUs along with 96 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

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

The Geforce GTX 1080 Ti, in theory, should perform a lot faster than the Radeon HD 7870 XT in general. (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 a lot (more or less 273%) better at anisotropic filtering 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 is quite a bit (approximately 340%) better at full screen anti-aliasing than the Radeon HD 7870 XT, and also will be capable of handling 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 largest amount of data (counted in megabytes per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.