GeForce GT 220 GDDR3 vs GeForce GTS 450

Intro

Compare those specifications to the GeForce GTS 450, which features clock speeds of 783 MHz on the GPU, and 902 MHz on the 512 MB of GDDR5 RAM. It features 192 SPUs along with 32 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

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

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

Texel Rate

The GeForce GTS 450 should be much (approximately 151%) more effective at anisotropic filtering than the GeForce GT 220 GDDR3. (explain)

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

Pixel Rate

The GeForce GTS 450 should be much (about 151%) better at FSAA than the GeForce GT 220 GDDR3, and able to handle higher screen resolutions better. (explain)

GeForce GTS 450		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: Memory bandwidth is the max amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. 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 also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.