GeForce GTX 280 vs Geforce GTX 670

Intro

Compare those specs to the Geforce GTX 670, which features a clock speed of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It is comprised of 1344 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 670		170 Watts
GeForce GTX 280		236 Watts
	Difference: 66 Watts (39%)

Memory Bandwidth

In theory, the Geforce GTX 670 should be 36% quicker than the GeForce GTX 280 overall, due to its greater bandwidth. (explain)

Geforce GTX 670		192000 MB/sec
GeForce GTX 280		141696 MB/sec
	Difference: 50304 (36%)

Texel Rate

The Geforce GTX 670 will be quite a bit (about 113%) better at anisotropic filtering than the GeForce GTX 280. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce GTX 280		48160 Mtexels/sec
	Difference: 54320 (113%)

Pixel Rate

The Geforce GTX 670 will be a lot (more or less 52%) better at AA than the GeForce GTX 280, and also should be capable of handling higher resolutions more effectively. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce GTX 280		19264 Mpixels/sec
	Difference: 10016 (52%)

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.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's 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 are processed per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one 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 outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.