GeForce GTX 460 SE vs GeForce GTX 650

Intro

Compare those specs to the GeForce GTX 650, which has a clock frequency of 1058 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 384 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 460 SE		150 Watts
	Difference: 86 Watts (134%)

Memory Bandwidth

In theory, the GeForce GTX 460 SE should perform much faster than the GeForce GTX 650 in general. (explain)

GeForce GTX 460 SE		108800 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 28800 (36%)

Texel Rate

The GeForce GTX 650 will be just a bit (more or less 9%) better at texture filtering than the GeForce GTX 460 SE. (explain)

GeForce GTX 650		33856 Mtexels/sec
GeForce GTX 460 SE		31200 Mtexels/sec
	Difference: 2656 (9%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 460 SE is superior to the GeForce GTX 650, and very much so. (explain)

GeForce GTX 460 SE		20800 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 3872 (23%)

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: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 can be applied per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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