GeForce GT 220 GDDR3 vs Radeon HD 5450

Intro

Compare that to the Radeon HD 5450, which features GPU clock speed of 650 MHz, and 512 MB of DDR3 memory set to run at 800 MHz through a 64-bit bus. It also features 80(16x5) Stream Processors, 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 GT 220 GDDR3		58 Watts
	Difference: 39 Watts (205%)

Memory Bandwidth

Performance-wise, the GeForce GT 220 GDDR3 should theoretically be much better than the Radeon HD 5450 in general. (explain)

GeForce GT 220 GDDR3		32384 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 19584 (153%)

Texel Rate

The GeForce GT 220 GDDR3 should be much (approximately 92%) faster with regards to AF than the Radeon HD 5450. (explain)

GeForce GT 220 GDDR3		10000 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 4800 (92%)

Pixel Rate

The GeForce GT 220 GDDR3 is a lot (approximately 92%) more effective at FSAA than the Radeon HD 5450, and also able to handle higher resolutions while still performing well. (explain)

GeForce GT 220 GDDR3		5000 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 2400 (92%)

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 MB per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 number of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.