GeForce GT 440 1.5GB vs GeForce GTS 450 1GB

Intro

Compare that to the GeForce GTS 450 1GB, which comes with clock speeds of 783 MHz on the GPU, and 902 MHz on the 1024 MB of GDDR5 RAM. It features 192 SPUs as well as 32 Texture Address Units 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

In theory, the GeForce GTS 450 1GB should perform quite a bit faster than the GeForce GT 440 1.5GB overall. (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 (about 76%) more effective at anisotropic 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 using high levels of AA is important to you, then the GeForce GT 440 1.5GB is superior to the GeForce GTS 450 1GB, but not by far. (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: Bandwidth is the max amount of data (measured in MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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