Nvidia Titan X vs Radeon HD 7870 XT

Intro

Compare all that to the Radeon HD 7870 XT, which features a GPU core clock speed of 925 MHz, and 2048 MB of GDDR5 RAM running at 1500 MHz through a 256-bit bus. It also is made up of 1536 Stream Processors, 96 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 XT		185 Watts
Nvidia Titan X		250 Watts
	Difference: 65 Watts (35%)

Memory Bandwidth

In theory, the Nvidia Titan X is 156% faster than the Radeon HD 7870 XT in general, because of its greater data rate. (explain)

Nvidia Titan X		491520 MB/sec
Radeon HD 7870 XT		192000 MB/sec
	Difference: 299520 (156%)

Texel Rate

The Nvidia Titan X will be a lot (more or less 257%) more effective at texture filtering than the Radeon HD 7870 XT. (explain)

Nvidia Titan X		317408 Mtexels/sec
Radeon HD 7870 XT		88800 Mtexels/sec
	Difference: 228608 (257%)

Pixel Rate

The Nvidia Titan X should be a lot (more or less 360%) faster with regards to AA than the Radeon HD 7870 XT, and also will be able to handle higher resolutions better. (explain)

Nvidia Titan X		136032 Mpixels/sec
Radeon HD 7870 XT		29600 Mpixels/sec
	Difference: 106432 (360%)

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: Bandwidth is the max amount of data (measured in megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher 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 number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.