GeForce GTX 780 Ti vs Radeon HD 5550

Intro

Compare those specs to the Radeon HD 5550, which features clock speeds of 550 MHz on the GPU, and 400 MHz on the 512 MB of DDR2 memory. It features 320(64x5) SPUs as well as 16 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 780 Ti should perform quite a bit faster than the Radeon HD 5550 in general. (explain)

GeForce GTX 780 Ti		336000 MB/sec
Radeon HD 5550		12800 MB/sec
	Difference: 323200 (2525%)

Texel Rate

The GeForce GTX 780 Ti is much (more or less 2286%) more effective at AF than the Radeon HD 5550. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
Radeon HD 5550		8800 Mtexels/sec
	Difference: 201200 (2286%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 780 Ti is superior to the Radeon HD 5550, and very much so. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
Radeon HD 5550		4400 Mpixels/sec
	Difference: 37600 (855%)

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 max amount of information (in units of MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.