GeForce 9800 GTX+ vs GeForce GT 440 3GB

Intro

Compare that to the GeForce GT 440 3GB, which features a clock speed of 594 MHz and a GDDR3 memory speed of 900 MHz. It also uses a 192-bit memory bus, and uses a 40 nm design. It is made up of 144 SPUs, 24 TAUs, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce 9800 GTX+		145 Watts
	Difference: 89 Watts (159%)

Memory Bandwidth

Performance-wise, the GeForce 9800 GTX+ should in theory be a lot superior to the GeForce GT 440 3GB in general. (explain)

GeForce 9800 GTX+		70400 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 27200 (63%)

Texel Rate

The GeForce 9800 GTX+ should be quite a bit (more or less 231%) more effective at AF than the GeForce GT 440 3GB. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 32976 (231%)

Pixel Rate

The GeForce GT 440 3GB should be a lot (more or less 21%) faster with regards to full screen anti-aliasing than the GeForce 9800 GTX+, and able to handle higher resolutions more effectively. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
GeForce 9800 GTX+		11808 Mpixels/sec
	Difference: 2448 (21%)

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 largest amount of information (in units of megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling 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 that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on 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 memory bandwidth is, the lower the ability to get to the max fill rate.