GeForce GTX 560 Ti 448 vs Radeon HD 5770

Intro

Compare all of that to the Radeon HD 5770, which comes with a GPU core clock speed of 850 MHz, and 1024 MB of GDDR5 RAM running at 1200 MHz through a 128-bit bus. It also features 800(160x5) Stream Processors, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 102 Watts (94%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 560 Ti 448 should theoretically be a lot better than the Radeon HD 5770 in general. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 67200 (88%)

Texel Rate

The GeForce GTX 560 Ti 448 is quite a bit (more or less 21%) better at texture filtering than the Radeon HD 5770. (explain)

GeForce GTX 560 Ti 448		40992 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 6992 (21%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 560 Ti 448 is a better choice, by far. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 15680 (115%)

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 (counted in MB per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is calculated by multiplying the total amount of 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 processed in one second.

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