GeForce 9400 GT 256MB vs GeForce 9600 GSO ASUS 512

Intro

Compare those specs to the GeForce 9600 GSO ASUS 512, which makes use of a 65 nm design. nVidia has clocked the core speed at 550 MHz. The DDR2 memory runs at a speed of 500 MHz on this particular card. It features 96 SPUs as well as 48 TAUs and 12 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9400 GT 256MB		50 Watts
GeForce 9600 GSO ASUS 512		84 Watts
	Difference: 34 Watts (68%)

Memory Bandwidth

In theory, the GeForce 9600 GSO ASUS 512 will be 25% quicker than the GeForce 9400 GT 256MB overall, due to its higher bandwidth. (explain)

GeForce 9600 GSO ASUS 512		16000 MB/sec
GeForce 9400 GT 256MB		12800 MB/sec
	Difference: 3200 (25%)

Texel Rate

The GeForce 9600 GSO ASUS 512 will be a lot (about 500%) more effective at anisotropic filtering than the GeForce 9400 GT 256MB. (explain)

GeForce 9600 GSO ASUS 512		26400 Mtexels/sec
GeForce 9400 GT 256MB		4400 Mtexels/sec
	Difference: 22000 (500%)

Pixel Rate

The GeForce 9600 GSO ASUS 512 will be a lot (about 200%) faster with regards to AA than the GeForce 9400 GT 256MB, and will be able to handle higher screen resolutions better. (explain)

GeForce 9600 GSO ASUS 512		6600 Mpixels/sec
GeForce 9400 GT 256MB		2200 Mpixels/sec
	Difference: 4400 (200%)

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 largest amount of data (counted in MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR 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 speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. 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 also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.