GeForce 940M vs GeForce GT 340 1GB

Intro

Compare those specs to the GeForce GT 340 1GB, which comes with a core clock frequency of 550 MHz and a GDDR5 memory speed of 850 MHz. It also features a 128-bit bus, and makes use of a 40 nm design. It is made up of 96 SPUs, 32 Texture Address Units, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GT 340 1GB should be 240% faster than the GeForce 940M overall, due to its greater data rate. (explain)

GeForce GT 340 1GB		54400 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 38400 (240%)

Texel Rate

The GeForce 940M should be quite a bit (about 46%) faster with regards to texture filtering than the GeForce GT 340 1GB. (explain)

GeForce 940M		25728 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 8128 (46%)

Pixel Rate

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

GeForce 940M		8576 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 4176 (95%)

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 information (measured in MB per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.