GeForce GTX 470 vs Radeon HD 6770 1GB

Intro

Compare those specs to the Radeon HD 6770 1GB, which features core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 800 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB		108 Watts
GeForce GTX 470		215 Watts
	Difference: 107 Watts (99%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 470 should in theory be a lot better than the Radeon HD 6770 1GB in general. (explain)

GeForce GTX 470		133920 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 66720 (99%)

Texel Rate

The Radeon HD 6770 1GB should be a little bit (more or less 6%) better at anisotropic filtering than the GeForce GTX 470. (explain)

Radeon HD 6770 1GB		36000 Mtexels/sec
GeForce GTX 470		33992 Mtexels/sec
	Difference: 2008 (6%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 470 is a better choice, by far. (explain)

GeForce GTX 470		24280 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 9880 (69%)

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 maximum amount of information (measured in megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.