GeForce GTX 560 vs Radeon HD 5450

Intro

Compare all that to the Radeon HD 5450, which features a clock frequency of 650 MHz and a DDR3 memory speed of 800 MHz. It also uses a 64-bit memory bus, and uses a 40 nm design. It is made up of 80(16x5) SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GTX 560		150 Watts
	Difference: 131 Watts (689%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 560 should be a lot faster than the Radeon HD 5450 in general. (explain)

GeForce GTX 560		128128 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 115328 (901%)

Texel Rate

The GeForce GTX 560 should be much (approximately 772%) better at texture filtering than the Radeon HD 5450. (explain)

GeForce GTX 560		45360 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 40160 (772%)

Pixel Rate

The GeForce GTX 560 will be much (about 897%) better at FSAA than the Radeon HD 5450, and will be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 560		25920 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 23320 (897%)

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 information (counted in megabytes per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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