GeForce 8300 GS (OEM) vs Geforce GTX 680

Intro

Compare all of that to the Geforce GTX 680, which features GPU clock speed of 1006 MHz, and 2048 MB of GDDR5 memory set to run at 1502 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 8300 GS (OEM)		40 Watts
Geforce GTX 680		195 Watts
	Difference: 155 Watts (388%)

Memory Bandwidth

The Geforce GTX 680 should theoretically perform a lot faster than the GeForce 8300 GS (OEM) overall. (explain)

Geforce GTX 680		192256 MB/sec
GeForce 8300 GS (OEM)		6400 MB/sec
	Difference: 185856 (2904%)

Texel Rate

The Geforce GTX 680 will be quite a bit (more or less 7054%) better at texture filtering than the GeForce 8300 GS (OEM). (explain)

Geforce GTX 680		128768 Mtexels/sec
GeForce 8300 GS (OEM)		1800 Mtexels/sec
	Difference: 126968 (7054%)

Pixel Rate

The Geforce GTX 680 is a lot (approximately 3477%) better at AA than the GeForce 8300 GS (OEM), and also will be able to handle higher screen resolutions without slowing down too much. (explain)

Geforce GTX 680		32192 Mpixels/sec
GeForce 8300 GS (OEM)		900 Mpixels/sec
	Difference: 31292 (3477%)

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: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.