GeForce GT 220 GDDR3 vs GeForce GT 450 (OEM)

Intro

Compare all of that to the GeForce GT 450 (OEM), which makes use of a 40 nm design. nVidia has set the core frequency at 790 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this card. It features 144 SPUs as well as 24 TAUs and 24 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 48 Watts (83%)

Memory Bandwidth

The GeForce GT 450 (OEM), in theory, should be quite a bit faster than the GeForce GT 220 GDDR3 in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 63616 (196%)

Texel Rate

The GeForce GT 450 (OEM) is much (more or less 90%) faster with regards to texture filtering than the GeForce GT 220 GDDR3. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 8960 (90%)

Pixel Rate

The GeForce GT 450 (OEM) should be quite a bit (more or less 279%) faster with regards to AA than the GeForce GT 220 GDDR3, and also capable of handling higher resolutions more effectively. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 13960 (279%)

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 data (in units of MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 can be processed per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour 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 rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.