GeForce GTX 650 Ti 2GB vs Radeon HD 5770

Intro

Compare those specs to the Radeon HD 5770, which features GPU clock speed of 850 MHz, and 1024 MB of GDDR5 RAM set to run at 1200 MHz through a 128-bit bus. It also features 800(160x5) Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
GeForce GTX 650 Ti 2GB		110 Watts
	Difference: 2 Watts (2%)

Memory Bandwidth

In theory, the GeForce GTX 650 Ti 2GB should perform a bit faster than the Radeon HD 5770 in general. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 9600 (13%)

Texel Rate

The GeForce GTX 650 Ti 2GB will be a lot (more or less 75%) better at texture filtering than the Radeon HD 5770. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 25392 (75%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 650 Ti 2GB is superior to the Radeon HD 5770, not by a very large margin though. (explain)

GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 1248 (9%)

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 MB per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.