GeForce GTX 275 vs Geforce GTX 690

Intro

Compare that to the Geforce GTX 690, which uses a 28 nm design. nVidia has set the core frequency at 915 MHz. The GDDR5 memory works at a speed of 1502 MHz on this specific model. It features 1536 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 275		219 Watts
Geforce GTX 690		300 Watts
	Difference: 81 Watts (37%)

Memory Bandwidth

Performance-wise, the Geforce GTX 690 should in theory be much better than the GeForce GTX 275 in general. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 257504 (203%)

Texel Rate

The Geforce GTX 690 should be quite a bit (about 363%) more effective at texture filtering than the GeForce GTX 275. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 183600 (363%)

Pixel Rate

The Geforce GTX 690 should be much (approximately 230%) better at anti-aliasing than the GeForce GTX 275, and also should be capable of handling higher screen resolutions while still performing well. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 40836 (230%)

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: Bandwidth is the max amount of data (measured in MB per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core 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 rate is also dependant on many 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.