GeForce GTX 750 Ti vs Radeon HD 4550 256MB

Intro

Compare those specifications to the Radeon HD 4550 256MB, which has a clock speed of 600 MHz and a DDR3 memory frequency of 800 MHz. It also uses a 64-bit memory bus, and makes use of a 55 nm design. It features 80(16x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 256MB		25 Watts
GeForce GTX 750 Ti		60 Watts
	Difference: 35 Watts (140%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 750 Ti should perform quite a bit faster than the Radeon HD 4550 256MB in general. (explain)

GeForce GTX 750 Ti		86400 MB/sec
Radeon HD 4550 256MB		12800 MB/sec
	Difference: 73600 (575%)

Texel Rate

The GeForce GTX 750 Ti should be quite a bit (more or less 750%) faster with regards to anisotropic filtering than the Radeon HD 4550 256MB. (explain)

GeForce GTX 750 Ti		40800 Mtexels/sec
Radeon HD 4550 256MB		4800 Mtexels/sec
	Difference: 36000 (750%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 750 Ti is the winner, and very much so. (explain)

GeForce GTX 750 Ti		16320 Mpixels/sec
Radeon HD 4550 256MB		2400 Mpixels/sec
	Difference: 13920 (580%)

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 maximum amount of information (measured in MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 per 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 higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. 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 output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.