GeForce GTX 560 Ti 448 vs Radeon HD 5450

Intro

Compare those specifications to the Radeon HD 5450, which features GPU core speed of 650 MHz, and 512 MB of DDR3 RAM set to run at 800 MHz through a 64-bit bus. It also is comprised of 80(16x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 191 Watts (1005%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 560 Ti 448 should perform a lot faster than the Radeon HD 5450 overall. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 131200 (1025%)

Texel Rate

The GeForce GTX 560 Ti 448 is a lot (about 688%) more effective at AF than the Radeon HD 5450. (explain)

GeForce GTX 560 Ti 448		40992 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 35792 (688%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 560 Ti 448 is a better choice, by a large margin. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 26680 (1026%)

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 largest amount of data (measured in MB per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 are processed in one second. This is worked out by multiplying the total 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount 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 output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.