GeForce 8600 GS (OEM) vs Radeon HD 6770 1GB

Intro

Compare all that to the Radeon HD 6770 1GB, which has a core clock frequency of 900 MHz and a GDDR5 memory frequency of 1050 MHz. It also makes use of a 128-bit bus, and makes use of a 40 nm design. It features 800 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GS (OEM)		47 Watts
Radeon HD 6770 1GB		108 Watts
	Difference: 61 Watts (130%)

Memory Bandwidth

The Radeon HD 6770 1GB should in theory perform a lot faster than the GeForce 8600 GS (OEM) in general. (explain)

Radeon HD 6770 1GB		67200 MB/sec
GeForce 8600 GS (OEM)		12800 MB/sec
	Difference: 54400 (425%)

Texel Rate

The Radeon HD 6770 1GB should be much (approximately 317%) faster with regards to AF than the GeForce 8600 GS (OEM). (explain)

Radeon HD 6770 1GB		36000 Mtexels/sec
GeForce 8600 GS (OEM)		8640 Mtexels/sec
	Difference: 27360 (317%)

Pixel Rate

The Radeon HD 6770 1GB will be quite a bit (more or less 233%) better at FSAA than the GeForce 8600 GS (OEM), and also capable of handling higher screen resolutions better. (explain)

Radeon HD 6770 1GB		14400 Mpixels/sec
GeForce 8600 GS (OEM)		4320 Mpixels/sec
	Difference: 10080 (233%)

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 maximum amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the 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 the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.