GeForce GTX 480 vs Radeon HD 5450

Intro

Compare those specifications to the Radeon HD 5450, which features a clock speed of 650 MHz and a DDR3 memory frequency of 800 MHz. It also makes use of 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 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GTX 480		250 Watts
	Difference: 231 Watts (1216%)

Memory Bandwidth

In theory, the GeForce GTX 480 should perform much faster than the Radeon HD 5450 in general. (explain)

GeForce GTX 480		177408 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 164608 (1286%)

Texel Rate

The GeForce GTX 480 should be quite a bit (about 708%) more effective at AF than the Radeon HD 5450. (explain)

GeForce GTX 480		42000 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 36800 (708%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 480 is the winner, and very much so. (explain)

GeForce GTX 480		33600 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 31000 (1192%)

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 maximum amount of information (in units of megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units 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 most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core 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 rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.