GeForce 8800 GT 512MB vs Radeon HD 5450

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce 8800 GT 512MB		105 Watts
	Difference: 86 Watts (453%)

Memory Bandwidth

Theoretically, the GeForce 8800 GT 512MB should perform a lot faster than the Radeon HD 5450 overall. (explain)

GeForce 8800 GT 512MB		57600 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 44800 (350%)

Texel Rate

The GeForce 8800 GT 512MB should be much (about 546%) faster with regards to texture filtering than the Radeon HD 5450. (explain)

GeForce 8800 GT 512MB		33600 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 28400 (546%)

Pixel Rate

The GeForce 8800 GT 512MB will be much (more or less 269%) better at AA than the Radeon HD 5450, and also able to handle higher resolutions better. (explain)

GeForce 8800 GT 512MB		9600 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 7000 (269%)

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 (counted in megabytes per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 in one second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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