GeForce 930M vs GeForce 9400 GT 256MB

Intro

Compare all that to the GeForce 9400 GT 256MB, which has GPU clock speed of 550 MHz, and 256 MB of GDDR2 memory running at 400 MHz through a 128-bit bus. It also is comprised of 16 Stream Processors, 8 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 930M, in theory, should perform a bit faster than the GeForce 9400 GT 256MB in general. (explain)

GeForce 930M		14400 MB/sec
GeForce 9400 GT 256MB		12800 MB/sec
	Difference: 1600 (13%)

Texel Rate

The GeForce 930M is much (more or less 406%) faster with regards to texture filtering than the GeForce 9400 GT 256MB. (explain)

GeForce 930M		22272 Mtexels/sec
GeForce 9400 GT 256MB		4400 Mtexels/sec
	Difference: 17872 (406%)

Pixel Rate

The GeForce 930M will be quite a bit (more or less 237%) faster with regards to full screen anti-aliasing than the GeForce 9400 GT 256MB, and should be able to handle higher screen resolutions more effectively. (explain)

GeForce 930M		7424 Mpixels/sec
GeForce 9400 GT 256MB		2200 Mpixels/sec
	Difference: 5224 (237%)

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 MB per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video 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 that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated 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 filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.