GeForce GTX 295 vs Geforce GTX 670

Intro

Compare that to the Geforce GTX 670, which comes with GPU core speed of 915 MHz, and 2048 MB of GDDR5 memory set to run at 1500 MHz through a 256-bit bus. It also features 1344 Stream Processors, 112 Texture Address Units, 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

Theoretically, the GeForce GTX 295 should be just a bit faster than the Geforce GTX 670 in general. (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 (about 11%) faster with regards to texture filtering than the GeForce GTX 295. (explain)

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

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 295 is a better choice, though only just barely. (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: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.