GeForce GT 440 1.5GB vs GeForce GTS 450 1GB

Intro

Compare all that to the GeForce GTS 450 1GB, which has GPU core speed of 783 MHz, and 1024 MB of GDDR5 RAM set to run at 902 MHz through a 128-bit bus. It also features 192 Stream Processors, 32 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 50 Watts (89%)

Memory Bandwidth

The GeForce GTS 450 1GB should in theory be quite a bit faster than the GeForce GT 440 1.5GB in general. (explain)

GeForce GTS 450 1GB		57728 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 14528 (34%)

Texel Rate

The GeForce GTS 450 1GB will be quite a bit (approximately 76%) faster with regards to texture filtering than the GeForce GT 440 1.5GB. (explain)

GeForce GTS 450 1GB		25056 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 10800 (76%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GT 440 1.5GB is the winner, though only just barely. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 1728 (14%)

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 data (in units of MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.