GeForce 8600 GS (OEM) vs Geforce GTX 770

Intro

Compare those specifications to the Geforce GTX 770, which has GPU clock speed of 1046 MHz, and 2048 MB of GDDR5 RAM set to run at 1753 MHz through a 256-bit bus. It also is made up of 1536 Stream Processors, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GS (OEM)		47 Watts
Geforce GTX 770		230 Watts
	Difference: 183 Watts (389%)

Memory Bandwidth

Theoretically, the Geforce GTX 770 should be much faster than the GeForce 8600 GS (OEM) in general. (explain)

Geforce GTX 770		224384 MB/sec
GeForce 8600 GS (OEM)		12800 MB/sec
	Difference: 211584 (1653%)

Texel Rate

The Geforce GTX 770 should be quite a bit (approximately 1450%) more effective at AF than the GeForce 8600 GS (OEM). (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce 8600 GS (OEM)		8640 Mtexels/sec
	Difference: 125248 (1450%)

Pixel Rate

The Geforce GTX 770 will be a lot (approximately 675%) better at FSAA than the GeForce 8600 GS (OEM), and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce 8600 GS (OEM)		4320 Mpixels/sec
	Difference: 29152 (675%)

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 data (measured in megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units by the core 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 get to the maximum fill rate.