GeForce GTX 460 2GB vs Radeon HD 6770

Intro

Compare those specifications to the Radeon HD 6770, which uses a 40 nm design. AMD has set the core speed at 900 MHz. The GDDR5 RAM runs at a frequency of 1050 MHz on this model. It features 800 SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770		108 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 52 Watts (48%)

Memory Bandwidth

In theory, the GeForce GTX 460 2GB is 71% faster than the Radeon HD 6770 in general, because of its higher data rate. (explain)

GeForce GTX 460 2GB		115200 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 48000 (71%)

Texel Rate

The GeForce GTX 460 2GB is a bit (about 5%) faster with regards to AF than the Radeon HD 6770. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 1800 (5%)

Pixel Rate

The GeForce GTX 460 2GB will be much (about 50%) better at AA than the Radeon HD 6770, and also will be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 7200 (50%)

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 data (in units of megabytes per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.