GeForce GT 640 DDR3 vs GeForce GTX Titan X

Intro

Compare that to the GeForce GTX Titan X, which comes with core speeds of 1000 MHz on the GPU, and 1750 MHz on the 12288 MB of GDDR5 RAM. It features 3072 SPUs as well as 192 TAUs and 96 ROPs.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX Titan X		17879 points
GeForce GT 640 DDR3		1560 points
	Difference: 16319 (1046%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 640 DDR3		65 Watts
GeForce GTX Titan X		250 Watts
	Difference: 185 Watts (285%)

Memory Bandwidth

Performance-wise, the GeForce GTX Titan X should theoretically be quite a bit superior to the GeForce GT 640 DDR3 overall. (explain)

GeForce GTX Titan X		336000 MB/sec
GeForce GT 640 DDR3		57024 MB/sec
	Difference: 278976 (489%)

Texel Rate

The GeForce GTX Titan X should be much (approximately 567%) more effective at texture filtering than the GeForce GT 640 DDR3. (explain)

GeForce GTX Titan X		192000 Mtexels/sec
GeForce GT 640 DDR3		28800 Mtexels/sec
	Difference: 163200 (567%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX Titan X is the winner, and very much so. (explain)

GeForce GTX Titan X		96000 Mpixels/sec
GeForce GT 640 DDR3		14400 Mpixels/sec
	Difference: 81600 (567%)

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 largest amount of information (in units of MB per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 number of texture map elements (texels) that can be processed in one second. This figure 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.