GeForce GTX 295 vs Geforce GTX 670

Intro

Compare that to the Geforce GTX 670, which makes use of a 28 nm design. nVidia has set the core frequency at 915 MHz. The GDDR5 RAM works at a speed of 1500 MHz on this specific model. It features 1344 SPUs along with 112 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 670		170 Watts
GeForce GTX 295		289 Watts
	Difference: 119 Watts (70%)

Memory Bandwidth

The GeForce GTX 295 should theoretically be a small bit faster than the Geforce GTX 670 overall. (explain)

GeForce GTX 295		223776 MB/sec
Geforce GTX 670		192000 MB/sec
	Difference: 31776 (17%)

Texel Rate

The Geforce GTX 670 should be just a bit (more or less 11%) better at AF than the GeForce GTX 295. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce GTX 295		92160 Mtexels/sec
	Difference: 10320 (11%)

Pixel Rate

The GeForce GTX 295 is a small bit (more or less 10%) more effective at anti-aliasing than the Geforce GTX 670, and will be capable of handling higher screen resolutions better. (explain)

GeForce GTX 295		32256 Mpixels/sec
Geforce GTX 670		29280 Mpixels/sec
	Difference: 2976 (10%)

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 largest amount of information (in units of MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 applied in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.