GeForce 9800 GT 1GB vs GeForce GT 440 1.5GB

Intro

Compare all of that to the GeForce GT 440 1.5GB, which uses a 40 nm design. nVidia has set the core frequency at 594 MHz. The GDDR3 RAM works at a speed of 900 MHz on this model. It features 144 SPUs along with 24 TAUs and 24 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
GeForce 9800 GT 1GB		105 Watts
	Difference: 49 Watts (88%)

Memory Bandwidth

As far as performance goes, the GeForce 9800 GT 1GB should theoretically be quite a bit better than the GeForce GT 440 1.5GB overall. (explain)

GeForce 9800 GT 1GB		57600 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 14400 (33%)

Texel Rate

The GeForce 9800 GT 1GB should be quite a bit (approximately 136%) better at texture filtering than the GeForce GT 440 1.5GB. (explain)

GeForce 9800 GT 1GB		33600 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 19344 (136%)

Pixel Rate

The GeForce GT 440 1.5GB should be a lot (about 49%) better at anti-aliasing than the GeForce 9800 GT 1GB, and also able to handle higher resolutions better. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
GeForce 9800 GT 1GB		9600 Mpixels/sec
	Difference: 4656 (49%)

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 (counted in megabytes per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's 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 figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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