Nvidia Titan X vs Radeon HD 6870

Intro

Compare those specifications to the Radeon HD 6870, which has core speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 1120 SPUs along with 56 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6870		151 Watts
Nvidia Titan X		250 Watts
	Difference: 99 Watts (66%)

Memory Bandwidth

Performance-wise, the Nvidia Titan X should theoretically be quite a bit superior to the Radeon HD 6870 overall. (explain)

Nvidia Titan X		491520 MB/sec
Radeon HD 6870		134400 MB/sec
	Difference: 357120 (266%)

Texel Rate

The Nvidia Titan X should be quite a bit (more or less 530%) faster with regards to anisotropic filtering than the Radeon HD 6870. (explain)

Nvidia Titan X		317408 Mtexels/sec
Radeon HD 6870		50400 Mtexels/sec
	Difference: 267008 (530%)

Pixel Rate

If using a high screen resolution is important to you, then the Nvidia Titan X is a better choice, by a large margin. (explain)

Nvidia Titan X		136032 Mpixels/sec
Radeon HD 6870		28800 Mpixels/sec
	Difference: 107232 (372%)

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 information (counted in MB per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

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