GeForce GTX 295 vs Geforce GTX 690

Intro

Compare that to the Geforce GTX 690, which features GPU core speed of 915 MHz, and 2048 MB of GDDR5 RAM running at 1502 MHz through a 256-bit bus. It also features 1536 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 295		289 Watts
Geforce GTX 690		300 Watts
	Difference: 11 Watts (4%)

Memory Bandwidth

In theory, the Geforce GTX 690 will be 72% faster than the GeForce GTX 295 overall, because of its higher bandwidth. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 295		223776 MB/sec
	Difference: 160736 (72%)

Texel Rate

The Geforce GTX 690 is much (more or less 154%) better at anisotropic filtering than the GeForce GTX 295. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 295		92160 Mtexels/sec
	Difference: 142080 (154%)

Pixel Rate

The Geforce GTX 690 is much (more or less 82%) more effective at anti-aliasing than the GeForce GTX 295, and also should be capable of handling higher screen resolutions more effectively. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTX 295		32256 Mpixels/sec
	Difference: 26304 (82%)

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 largest amount of information (measured in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 can be processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, 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 most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output 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 get to the maximum fill rate.