GeForce GTX 295 vs Radeon HD 6670 (OEM)

Intro

Compare all that to the Radeon HD 6670 (OEM), which features GPU clock speed of 800 MHz, and 512 MB of GDDR5 memory running at 1000 MHz through a 128-bit bus. It also is comprised of 480 Stream Processors, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM)		63 Watts
GeForce GTX 295		289 Watts
	Difference: 226 Watts (359%)

Memory Bandwidth

The GeForce GTX 295, in theory, should be much faster than the Radeon HD 6670 (OEM) in general. (explain)

GeForce GTX 295		223776 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 159776 (250%)

Texel Rate

The GeForce GTX 295 is much (approximately 380%) better at texture filtering than the Radeon HD 6670 (OEM). (explain)

GeForce GTX 295		92160 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 72960 (380%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 295 is a better choice, by a large margin. (explain)

GeForce GTX 295		32256 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 25856 (404%)

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 maximum amount of information (measured in megabytes per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR RAM, 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total texture units of the card by the core clock 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 applied per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.