GeForce GTX 650 vs GeForce GTX 780 Ti

Intro

Compare those specs to the GeForce GTX 780 Ti, which features GPU clock speed of 875 MHz, and 3072 MB of GDDR5 RAM running at 1750 MHz through a 384-bit bus. It also features 2880 Stream Processors, 240 TAUs, and 48 Raster Operation Units.

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 780 Ti		10900 points
GeForce GTX 650		2263 points
	Difference: 8637 (382%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 186 Watts (291%)

Memory Bandwidth

In theory, the GeForce GTX 780 Ti will be 320% quicker than the GeForce GTX 650 in general, because of its greater data rate. (explain)

GeForce GTX 780 Ti		336000 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 256000 (320%)

Texel Rate

The GeForce GTX 780 Ti should be quite a bit (more or less 520%) better at texture filtering than the GeForce GTX 650. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 176144 (520%)

Pixel Rate

The GeForce GTX 780 Ti is much (more or less 148%) faster with regards to FSAA than the GeForce GTX 650, and able to handle higher resolutions more effectively. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 25072 (148%)

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 over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 potential to get to the maximum fill rate.