GeForce 940M vs GeForce GT 320

Intro

Compare all of that to the GeForce GT 320, which comes with a core clock speed of 540 MHz and a GDDR3 memory frequency of 790 MHz. It also uses a 128-bit bus, and makes use of a 40 nm design. It is comprised of 72 SPUs, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GT 320, in theory, should be quite a bit faster than the GeForce 940M overall. (explain)

GeForce GT 320		25280 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 9280 (58%)

Texel Rate

The GeForce 940M should be a lot (about 99%) faster with regards to AF than the GeForce GT 320. (explain)

GeForce 940M		25728 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 12768 (99%)

Pixel Rate

The GeForce 940M should be a lot (more or less 99%) better at anti-aliasing than the GeForce GT 320, and also will be able to handle higher resolutions without losing too much performance. (explain)

GeForce 940M		8576 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 4256 (99%)

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 data (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If 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 amount of texture map elements (texels) that can be 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 higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.