GeForce GT 440 1.5GB vs GeForce GT 450 (OEM)

Intro

Compare those specifications to the GeForce GT 450 (OEM), which comes with a GPU core clock speed of 790 MHz, and 1536 MB of GDDR5 RAM running at 1000 MHz through a 192-bit bus. It also features 144 Stream Processors, 24 Texture Address Units, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 50 Watts (89%)

Memory Bandwidth

As far as performance goes, the GeForce GT 450 (OEM) should theoretically be much better than the GeForce GT 440 1.5GB in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 52800 (122%)

Texel Rate

The GeForce GT 450 (OEM) will be a lot (about 33%) faster with regards to AF than the GeForce GT 440 1.5GB. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 4704 (33%)

Pixel Rate

The GeForce GT 450 (OEM) is much (about 33%) more effective at full screen anti-aliasing than the GeForce GT 440 1.5GB, and able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce GT 440 1.5GB		14256 Mpixels/sec
	Difference: 4704 (33%)

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 data (in units of MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.