GeForce 8600 GT 1GB GDDR3 vs Geforce GTX 670

Intro

Compare all of that to the Geforce GTX 670, which has a clock speed of 915 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1344 SPUs, 112 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 1GB GDDR3		47 Watts
Geforce GTX 670		170 Watts
	Difference: 123 Watts (262%)

Memory Bandwidth

In theory, the Geforce GTX 670 will be 757% quicker than the GeForce 8600 GT 1GB GDDR3 in general, because of its higher bandwidth. (explain)

Geforce GTX 670		192000 MB/sec
GeForce 8600 GT 1GB GDDR3		22400 MB/sec
	Difference: 169600 (757%)

Texel Rate

The Geforce GTX 670 should be much (about 1086%) more effective at texture filtering than the GeForce 8600 GT 1GB GDDR3. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce 8600 GT 1GB GDDR3		8640 Mtexels/sec
	Difference: 93840 (1086%)

Pixel Rate

The Geforce GTX 670 will be much (about 578%) faster with regards to anti-aliasing than the GeForce 8600 GT 1GB GDDR3, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce 8600 GT 1GB GDDR3		4320 Mpixels/sec
	Difference: 24960 (578%)

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 largest amount of information (in units of MB per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number 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 drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.