GeForce GTX 570 vs Radeon HD 6770 1GB

Intro

Compare those specifications to the Radeon HD 6770 1GB, which makes use of a 40 nm design. AMD has set the core speed at 900 MHz. The GDDR5 memory works at a frequency of 1050 MHz on this particular model. It features 800 SPUs along with 40 Texture Address Units 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 570		219 Watts
	Difference: 111 Watts (103%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 570 should be 126% faster than the Radeon HD 6770 1GB in general, due to its higher bandwidth. (explain)

GeForce GTX 570		152000 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 84800 (126%)

Texel Rate

The GeForce GTX 570 should be much (approximately 22%) faster with regards to AF than the Radeon HD 6770 1GB. (explain)

GeForce GTX 570		43920 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 7920 (22%)

Pixel Rate

The GeForce GTX 570 will be a lot (more or less 103%) more effective at FSAA than the Radeon HD 6770 1GB, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 570		29280 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 14880 (103%)

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 data (counted in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, 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 the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.