GeForce GTX 260 216SP 55 nm vs Radeon HD 6770 1GB

Intro

Compare those specs to the Radeon HD 6770 1GB, which features GPU core speed of 900 MHz, and 1024 MB of GDDR5 memory running at 1050 MHz through a 128-bit bus. It also features 800 Stream Processors, 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 260 216SP 55 nm		171 Watts
	Difference: 63 Watts (58%)

Memory Bandwidth

In theory, the GeForce GTX 260 216SP 55 nm should be a lot faster than the Radeon HD 6770 1GB in general. (explain)

GeForce GTX 260 216SP 55 nm		111888 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 44688 (67%)

Texel Rate

The GeForce GTX 260 216SP 55 nm will be just a bit (more or less 15%) better at anisotropic filtering than the Radeon HD 6770 1GB. (explain)

GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 5472 (15%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 260 216SP 55 nm is a better choice, but only just. (explain)

GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 1728 (12%)

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 (in units of megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's 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 rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.