Nvidia Titan X vs Radeon HD 4870 512MB

Intro

Compare those specifications to the Radeon HD 4870 512MB, which uses a 55 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 memory is set to run at a frequency of 900 MHz on this model. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 512MB		150 Watts
Nvidia Titan X		250 Watts
	Difference: 100 Watts (67%)

Memory Bandwidth

The Nvidia Titan X, in theory, should perform a lot faster than the Radeon HD 4870 512MB in general. (explain)

Nvidia Titan X		491520 MB/sec
Radeon HD 4870 512MB		115200 MB/sec
	Difference: 376320 (327%)

Texel Rate

The Nvidia Titan X is a lot (about 958%) faster with regards to texture filtering than the Radeon HD 4870 512MB. (explain)

Nvidia Titan X		317408 Mtexels/sec
Radeon HD 4870 512MB		30000 Mtexels/sec
	Difference: 287408 (958%)

Pixel Rate

The Nvidia Titan X will be much (more or less 1034%) more effective at full screen anti-aliasing than the Radeon HD 4870 512MB, and also should be capable of handling higher screen resolutions without losing too much performance. (explain)

Nvidia Titan X		136032 Mpixels/sec
Radeon HD 4870 512MB		12000 Mpixels/sec
	Difference: 124032 (1034%)

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 information (measured in megabytes per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 are applied per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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 get to the max fill rate.