GeForce GT 440 1.5GB vs GeForce GTS 250 1GB

Intro

Compare those specifications to the GeForce GTS 250 1GB, which features GPU clock speed of 738 MHz, and 1024 MB of GDDR3 RAM set to run at 1100 MHz through a 256-bit bus. It also is made up of 128 SPUs, 64 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
GeForce GTS 250 1GB		145 Watts
	Difference: 89 Watts (159%)

Memory Bandwidth

Performance-wise, the GeForce GTS 250 1GB should in theory be a lot superior to the GeForce GT 440 1.5GB in general. (explain)

GeForce GTS 250 1GB		70400 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 27200 (63%)

Texel Rate

The GeForce GTS 250 1GB will be a lot (approximately 231%) more effective at anisotropic filtering than the GeForce GT 440 1.5GB. (explain)

GeForce GTS 250 1GB		47232 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 32976 (231%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GT 440 1.5GB is superior to the GeForce GTS 250 1GB, and very much so. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
GeForce GTS 250 1GB		11808 Mpixels/sec
	Difference: 2448 (21%)

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 largest amount of data (in units of MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 amount of texture map elements (texels) that are processed in one 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.