Nvidia Titan X vs Radeon HD 4870 512MB

Intro

Compare all that to the Radeon HD 4870 512MB, which comes with core clock speeds of 750 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 RAM. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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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

In theory, the Nvidia Titan X should be 327% faster than the Radeon HD 4870 512MB overall, due to its greater data rate. (explain)

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

Texel Rate

The Nvidia Titan X should be much (more or less 958%) faster with regards to anisotropic 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 is a lot (more or less 1034%) faster with regards to anti-aliasing than the Radeon HD 4870 512MB, and should be able to handle higher resolutions better. (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 maximum amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.