GeForce GTX 295 vs GeForce GTX 650

Intro

Compare those specifications to the GeForce GTX 650, which has GPU core speed of 1058 MHz, and 1024 MB of GDDR5 memory set to run at 1250 MHz through a 128-bit bus. It also is made up of 384 Stream Processors, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 295		289 Watts
	Difference: 225 Watts (352%)

Memory Bandwidth

In theory, the GeForce GTX 295 is 180% quicker than the GeForce GTX 650 in general, because of its higher bandwidth. (explain)

GeForce GTX 295		223776 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 143776 (180%)

Texel Rate

The GeForce GTX 295 should be quite a bit (about 172%) faster with regards to AF than the GeForce GTX 650. (explain)

GeForce GTX 295		92160 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 58304 (172%)

Pixel Rate

The GeForce GTX 295 should be a lot (about 91%) more effective at FSAA than the GeForce GTX 650, and also should be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 295		32256 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 15328 (91%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.