GeForce 9400 GT 256MB vs GeForce GT 130

Intro

Compare those specifications to the GeForce GT 130, which has GPU core speed of 500 MHz, and 768 MB of DDR2 RAM set to run at 250 MHz through a 192-bit bus. It also features 48 Stream Processors, 24 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9400 GT 256MB		50 Watts
GeForce GT 130		75 Watts
	Difference: 25 Watts (50%)

Memory Bandwidth

The GeForce 9400 GT 256MB, in theory, should perform a little bit faster than the GeForce GT 130 in general. (explain)

GeForce 9400 GT 256MB		12800 MB/sec
GeForce GT 130		12000 MB/sec
	Difference: 800 (7%)

Texel Rate

The GeForce GT 130 is much (about 173%) better at anisotropic filtering than the GeForce 9400 GT 256MB. (explain)

GeForce GT 130		12000 Mtexels/sec
GeForce 9400 GT 256MB		4400 Mtexels/sec
	Difference: 7600 (173%)

Pixel Rate

The GeForce GT 130 will be much (about 264%) faster with regards to AA than the GeForce 9400 GT 256MB, and able to handle higher resolutions better. (explain)

GeForce GT 130		8000 Mpixels/sec
GeForce 9400 GT 256MB		2200 Mpixels/sec
	Difference: 5800 (264%)

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 max amount of information (in units of MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units of the card by the core 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines 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 fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.