GeForce GTX 480 vs Radeon HD 5450

Intro

Compare that to the Radeon HD 5450, which features clock speeds of 650 MHz on the GPU, and 800 MHz on the 512 MB of DDR3 memory. It features 80(16x5) SPUs along with 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

Performance-wise, the GeForce GTX 480 should in theory be much superior to the Radeon HD 5450 overall. (explain)

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

Texel Rate

The GeForce GTX 480 should be a lot (approximately 708%) better at anisotropic filtering than the Radeon HD 5450. (explain)

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

Pixel Rate

The GeForce GTX 480 is quite a bit (approximately 1192%) better at FSAA than the Radeon HD 5450, and also will be capable of handling higher resolutions without losing too much performance. (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: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics 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 maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.