GeForce GT 440 3GB vs GeForce GTX 650

Intro

Compare those specifications to the GeForce GTX 650, which comes with a clock speed of 1058 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 384 SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GTX 650		64 Watts
	Difference: 8 Watts (14%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 650 should in theory be a lot better than the GeForce GT 440 3GB overall. (explain)

GeForce GTX 650		80000 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 36800 (85%)

Texel Rate

The GeForce GTX 650 is a lot (more or less 137%) faster with regards to texture filtering than the GeForce GT 440 3GB. (explain)

GeForce GTX 650		33856 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 19600 (137%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 650 is the winner, though not by far. (explain)

GeForce GTX 650		16928 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 2672 (19%)

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 max amount of data (measured in MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 get to the max fill rate.