GeForce GTX 295 vs GeForce GTX 650

Intro

Compare all of that to the GeForce GTX 650, which features GPU clock speed of 1058 MHz, and 1024 MB of GDDR5 memory running at 1250 MHz through a 128-bit bus. It also is comprised of 384 SPUs, 32 Texture Address Units, and 16 ROPs.

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

Performance-wise, the GeForce GTX 295 should theoretically be a lot superior to the GeForce GTX 650 in general. (explain)

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

Texel Rate

The GeForce GTX 295 is a lot (approximately 172%) faster with regards to anisotropic filtering than the GeForce GTX 650. (explain)

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

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 295 is a better choice, by a large margin. (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 maximum amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, 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 number is calculated by multiplying the total number of texture units 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount 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 fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.