GeForce GT 440 3GB vs GeForce GTX 980

Intro

Compare all of that to the GeForce GTX 980, which has a core clock speed of 1126 MHz and a GDDR5 memory speed of 1750 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GTX 980		165 Watts
	Difference: 109 Watts (195%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 980 should be a lot faster than the GeForce GT 440 3GB in general. (explain)

GeForce GTX 980		224000 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 180800 (419%)

Texel Rate

The GeForce GTX 980 will be a lot (about 911%) better at AF than the GeForce GT 440 3GB. (explain)

GeForce GTX 980		144128 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 129872 (911%)

Pixel Rate

The GeForce GTX 980 should be a lot (about 405%) better at anti-aliasing than the GeForce GT 440 3GB, and also able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 980		72064 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 57808 (405%)

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 maximum amount of data (in units of megabytes per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per 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 number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.