GeForce 8400 GS 512MB vs Nvidia Titan X

Intro

Compare those specs to the Nvidia Titan X, which uses a 16 nm design. nVidia has clocked the core speed at 1417 MHz. The GDDR5X RAM is set to run at a speed of 1251 MHz on this particular card. It features 3584 SPUs along with 224 TAUs and 96 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8400 GS 512MB		40 Watts
Nvidia Titan X		250 Watts
	Difference: 210 Watts (525%)

Memory Bandwidth

Performance-wise, the Nvidia Titan X should theoretically be a lot better than the GeForce 8400 GS 512MB in general. (explain)

Nvidia Titan X		491520 MB/sec
GeForce 8400 GS 512MB		6400 MB/sec
	Difference: 485120 (7580%)

Texel Rate

The Nvidia Titan X should be much (approximately 6004%) more effective at anisotropic filtering than the GeForce 8400 GS 512MB. (explain)

Nvidia Titan X		317408 Mtexels/sec
GeForce 8400 GS 512MB		5200 Mtexels/sec
	Difference: 312208 (6004%)

Pixel Rate

If using a high screen resolution is important to you, then the Nvidia Titan X is the winner, by far. (explain)

Nvidia Titan X		136032 Mpixels/sec
GeForce 8400 GS 512MB		2600 Mpixels/sec
	Difference: 133432 (5132%)

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 information (in units of megabytes per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.