GeForce GTX 460 SE vs Radeon HD 6770 1GB

Intro

Compare all of that to the Radeon HD 6770 1GB, which has core speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 800 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB		108 Watts
GeForce GTX 460 SE		150 Watts
	Difference: 42 Watts (39%)

Memory Bandwidth

In theory, the GeForce GTX 460 SE should be 62% faster than the Radeon HD 6770 1GB in general, due to its higher data rate. (explain)

GeForce GTX 460 SE		108800 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 41600 (62%)

Texel Rate

The Radeon HD 6770 1GB will be just a bit (about 15%) more effective at texture filtering than the GeForce GTX 460 SE. (explain)

Radeon HD 6770 1GB		36000 Mtexels/sec
GeForce GTX 460 SE		31200 Mtexels/sec
	Difference: 4800 (15%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 460 SE is the winner, by a large margin. (explain)

GeForce GTX 460 SE		20800 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 6400 (44%)

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 max amount of information (in units of megabytes per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of 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 AA, HDR 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 clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can 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 clock 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 quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.