GeForce GTX 750 vs Radeon HD 5550

Intro

Compare all that to the Radeon HD 5550, which has a clock frequency of 550 MHz and a DDR2 memory frequency of 400 MHz. It also uses a 128-bit bus, and makes use of a 40 nm design. It is made up of 320(64x5) SPUs, 16 Texture Address Units, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce GTX 750 should be much faster than the Radeon HD 5550 overall. (explain)

GeForce GTX 750		80000 MB/sec
Radeon HD 5550		12800 MB/sec
	Difference: 67200 (525%)

Texel Rate

The GeForce GTX 750 should be much (more or less 271%) faster with regards to anisotropic filtering than the Radeon HD 5550. (explain)

GeForce GTX 750		32640 Mtexels/sec
Radeon HD 5550		8800 Mtexels/sec
	Difference: 23840 (271%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 750 is superior to the Radeon HD 5550, by a large margin. (explain)

GeForce GTX 750		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 MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.