GeForce GT 220 GDDR3 vs Radeon HD 3470 256MB

Intro

Compare those specs to the Radeon HD 3470 256MB, which comes with a clock frequency of 800 MHz and a DDR2 memory speed of 950 MHz. It also features a 128-bit bus, and uses a 55 nm design. It features 40(8x5) SPUs, 4 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GT 220 GDDR3 should in theory be a little bit superior to the Radeon HD 3470 256MB overall. (explain)

GeForce GT 220 GDDR3		32384 MB/sec
Radeon HD 3470 256MB		30400 MB/sec
	Difference: 1984 (7%)

Texel Rate

The GeForce GT 220 GDDR3 should be a lot (more or less 213%) better at texture filtering than the Radeon HD 3470 256MB. (explain)

GeForce GT 220 GDDR3		10000 Mtexels/sec
Radeon HD 3470 256MB		3200 Mtexels/sec
	Difference: 6800 (213%)

Pixel Rate

The GeForce GT 220 GDDR3 will be a lot (more or less 56%) better at full screen anti-aliasing than the Radeon HD 3470 256MB, and also will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GT 220 GDDR3		5000 Mpixels/sec
Radeon HD 3470 256MB		3200 Mpixels/sec
	Difference: 1800 (56%)

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 megabytes per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.