GeForce GTX 750 Ti vs Radeon HD 5550

Intro

Compare those specifications to the Radeon HD 5550, which comes with a core clock speed of 550 MHz and a DDR2 memory speed of 400 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It features 320(64x5) SPUs, 16 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 750 Ti should be much faster than the Radeon HD 5550 in general. (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 much (about 364%) better at 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

The GeForce GTX 750 Ti is much (approximately 271%) more effective at FSAA than the Radeon HD 5550, and should be capable of handling higher screen resolutions while still performing well. (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 maximum amount of data (in units of MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 can be processed per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, 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 most pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core 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 also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.