GeForce GT 440 1.5GB vs GeForce GTS 250 1GB

Intro

Compare those specifications to the GeForce GTS 250 1GB, which comes with GPU core speed of 738 MHz, and 1024 MB of GDDR3 RAM running at 1100 MHz through a 256-bit bus. It also features 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

The GeForce GTS 250 1GB should in theory perform much faster than 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 quite a bit (approximately 231%) more effective at texture 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

The GeForce GT 440 1.5GB is a lot (approximately 21%) more effective at FSAA than the GeForce GTS 250 1GB, and should be able to handle higher resolutions better. (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: Bandwidth is the largest amount of information (in units of MB per second) that can be transported across 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 type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, 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 maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.