GeForce GTX 780 Ti vs Radeon HD 5450

Intro

Compare that to the Radeon HD 5450, which makes use of a 40 nm design. AMD has set the core frequency at 650 MHz. The DDR3 RAM is set to run at a speed of 800 MHz on this specific model. It features 80(16x5) SPUs as well as 8 TAUs and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 231 Watts (1216%)

Memory Bandwidth

In theory, the GeForce GTX 780 Ti should perform quite a bit faster than the Radeon HD 5450 overall. (explain)

GeForce GTX 780 Ti		336000 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 323200 (2525%)

Texel Rate

The GeForce GTX 780 Ti will be much (approximately 3938%) faster with regards to AF than the Radeon HD 5450. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 204800 (3938%)

Pixel Rate

The GeForce GTX 780 Ti should be much (more or less 1515%) faster with regards to full screen anti-aliasing than the Radeon HD 5450, and capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 39400 (1515%)

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 (counted in megabytes per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it must 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, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.