GeForce 940M vs GeForce GT 315

Intro

Compare those specs to the GeForce GT 315, which has a core clock frequency of 625 MHz and a DDR3 memory frequency of 790 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is made up of 48 SPUs, 16 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GT 315 should perform much faster than the GeForce 940M in general. (explain)

GeForce GT 315		25280 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 9280 (58%)

Texel Rate

The GeForce 940M should be quite a bit (approximately 157%) better at texture filtering than the GeForce GT 315. (explain)

GeForce 940M		25728 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 15728 (157%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 940M is the winner, by a large margin. (explain)

GeForce 940M		8576 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 3576 (72%)

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 maximum amount of data (counted in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per 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 - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.