GeForce 9400 GT 256MB vs Radeon R7 M260X

Intro

Compare all of that to the Radeon R7 M260X, which makes use of a 28 nm design. AMD has set the core frequency at 825 MHz. The GDDR5 RAM is set to run at a speed of 1000 MHz on this specific model. It features 384 SPUs along with 24 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R7 M260X is 400% quicker than the GeForce 9400 GT 256MB overall, due to its greater bandwidth. (explain)

Radeon R7 M260X		64000 MB/sec
GeForce 9400 GT 256MB		12800 MB/sec
	Difference: 51200 (400%)

Texel Rate

The Radeon R7 M260X should be quite a bit (approximately 350%) better at anisotropic filtering than the GeForce 9400 GT 256MB. (explain)

Radeon R7 M260X		19800 Mtexels/sec
GeForce 9400 GT 256MB		4400 Mtexels/sec
	Difference: 15400 (350%)

Pixel Rate

The Radeon R7 M260X will be quite a bit (approximately 200%) more effective at anti-aliasing than the GeForce 9400 GT 256MB, and also should be capable of handling higher screen resolutions more effectively. (explain)

Radeon R7 M260X		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 max amount of information (in units of MB per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If 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 amount of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount 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 outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.