Nvidia Titan X vs Radeon HD 4770

Intro

Compare those specs to the Radeon HD 4770, which has GPU clock speed of 750 MHz, and 512 MB of GDDR5 RAM running at 800 MHz through a 128-bit bus. It also is made up of 640(128x5) SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4770		80 Watts
Nvidia Titan X		250 Watts
	Difference: 170 Watts (213%)

Memory Bandwidth

Theoretically speaking, the Nvidia Titan X is 860% quicker than the Radeon HD 4770 overall, because of its greater data rate. (explain)

Nvidia Titan X		491520 MB/sec
Radeon HD 4770		51200 MB/sec
	Difference: 440320 (860%)

Texel Rate

The Nvidia Titan X should be a lot (more or less 1223%) better at anisotropic filtering than the Radeon HD 4770. (explain)

Nvidia Titan X		317408 Mtexels/sec
Radeon HD 4770		24000 Mtexels/sec
	Difference: 293408 (1223%)

Pixel Rate

The Nvidia Titan X should be quite a bit (more or less 1034%) better at full screen anti-aliasing than the Radeon HD 4770, and also should be capable of handling higher screen resolutions better. (explain)

Nvidia Titan X		136032 Mpixels/sec
Radeon HD 4770		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 (in units of megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the 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 that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.