GeForce GT 220 GDDR3 vs GeForce GTS 450 1GB

Intro

Compare those specifications to the GeForce GTS 450 1GB, which uses a 40 nm design. nVidia has set the core speed at 783 MHz. The GDDR5 RAM works at a speed of 902 MHz on this particular card. It features 192 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 48 Watts (83%)

Memory Bandwidth

As far as performance goes, the GeForce GTS 450 1GB should in theory be much superior to the GeForce GT 220 GDDR3 overall. (explain)

GeForce GTS 450 1GB		57728 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 25344 (78%)

Texel Rate

The GeForce GTS 450 1GB should be much (about 151%) more effective at texture filtering than the GeForce GT 220 GDDR3. (explain)

GeForce GTS 450 1GB		25056 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 15056 (151%)

Pixel Rate

The GeForce GTS 450 1GB should be a lot (more or less 151%) better at FSAA than the GeForce GT 220 GDDR3, and also should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTS 450 1GB		12528 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 7528 (151%)

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 max amount of data (measured in MB per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.