GeForce GTX 295 vs Geforce GTX 690

Intro

Compare all that to the Geforce GTX 690, which makes use of a 28 nm design. nVidia has set the core speed at 915 MHz. The GDDR5 RAM is set to run at a frequency of 1502 MHz on this card. It features 1536 SPUs along with 128 TAUs and 32 ROPs.

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

As far as performance goes, the Geforce GTX 690 should in theory be quite a bit better than the GeForce GTX 295 in general. (explain)

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

Texel Rate

The Geforce GTX 690 is much (about 154%) faster with regards to AF than the GeForce GTX 295. (explain)

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

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 690 is superior to the GeForce GTX 295, and very much so. (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: Bandwidth is the max amount of data (counted in MB per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling 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 card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.