GeForce GT 440 3GB vs GeForce GTS 450

Intro

Compare all that to the GeForce GTS 450, which comes with a clock speed of 783 MHz and a GDDR5 memory speed of 902 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It is made up of 192 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GTS 450		106 Watts
	Difference: 50 Watts (89%)

Memory Bandwidth

The GeForce GTS 450 should theoretically perform much faster than the GeForce GT 440 3GB overall. (explain)

GeForce GTS 450		57728 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 14528 (34%)

Texel Rate

The GeForce GTS 450 should be much (more or less 76%) more effective at anisotropic filtering than the GeForce GT 440 3GB. (explain)

GeForce GTS 450		25056 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 10800 (76%)

Pixel Rate

The GeForce GT 440 3GB should be a small bit (more or less 14%) more effective at anti-aliasing than the GeForce GTS 450, and also capable of handling higher resolutions better. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
GeForce GTS 450		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 largest amount of data (counted in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount 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 rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.