GeForce GT 220 GDDR3 vs GeForce GT 230

Intro

Compare all that to the GeForce GT 230, which comes with a clock frequency of 550 MHz and a DDR3 memory frequency of 800 MHz. It also features a 192-bit memory bus, and uses a 40 nm design. It is made up of 32 SPUs, 16 Texture Address Units, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce GT 230		65 Watts
	Difference: 7 Watts (12%)

Memory Bandwidth

Theoretically, the GeForce GT 230 should perform just a bit faster than the GeForce GT 220 GDDR3 overall. (explain)

GeForce GT 230		38400 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 6016 (19%)

Texel Rate

The GeForce GT 220 GDDR3 will be a little bit (more or less 14%) more effective at AF than the GeForce GT 230. (explain)

GeForce GT 220 GDDR3		10000 Mtexels/sec
GeForce GT 230		8800 Mtexels/sec
	Difference: 1200 (14%)

Pixel Rate

The GeForce GT 220 GDDR3 will be a bit (approximately 14%) faster with regards to FSAA than the GeForce GT 230, and also should be capable of handling higher resolutions while still performing well. (explain)

GeForce GT 220 GDDR3		5000 Mpixels/sec
GeForce GT 230		4400 Mpixels/sec
	Difference: 600 (14%)

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 largest amount of data (counted in MB per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record 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 the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.