Nvidia Titan X vs Radeon HD 7870

Intro

Compare all of that to the Radeon HD 7870, which makes use of a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 memory is set to run at a frequency of 1200 MHz on this card. It features 1280 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870		175 Watts
Nvidia Titan X		250 Watts
	Difference: 75 Watts (43%)

Memory Bandwidth

Performance-wise, the Nvidia Titan X should theoretically be a lot superior to the Radeon HD 7870 in general. (explain)

Nvidia Titan X		491520 MB/sec
Radeon HD 7870		153600 MB/sec
	Difference: 337920 (220%)

Texel Rate

The Nvidia Titan X will be quite a bit (about 297%) faster with regards to AF than the Radeon HD 7870. (explain)

Nvidia Titan X		317408 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 237408 (297%)

Pixel Rate

The Nvidia Titan X is a lot (about 325%) more effective at AA than the Radeon HD 7870, and able to handle higher screen resolutions while still performing well. (explain)

Nvidia Titan X		136032 Mpixels/sec
Radeon HD 7870		32000 Mpixels/sec
	Difference: 104032 (325%)

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 data (in units of MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it must 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 anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.