GeForce GTX 750 Ti vs Radeon HD 5550

Intro

Compare all that to the Radeon HD 5550, which features GPU clock speed of 550 MHz, and 512 MB of DDR2 memory running at 400 MHz through a 128-bit bus. It also features 320(64x5) Stream Processors, 16 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 750 Ti is 575% faster than the Radeon HD 5550 in general, because of its greater data rate. (explain)

GeForce GTX 750 Ti		86400 MB/sec
Radeon HD 5550		12800 MB/sec
	Difference: 73600 (575%)

Texel Rate

The GeForce GTX 750 Ti will be a lot (about 364%) faster with regards to AF than the Radeon HD 5550. (explain)

GeForce GTX 750 Ti		40800 Mtexels/sec
Radeon HD 5550		8800 Mtexels/sec
	Difference: 32000 (364%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 750 Ti is superior to the Radeon HD 5550, by far. (explain)

GeForce GTX 750 Ti		16320 Mpixels/sec
Radeon HD 5550		4400 Mpixels/sec
	Difference: 11920 (271%)

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 (measured in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.