GeForce 9400 GT 256MB vs Radeon R7 M260

Intro

Compare those specifications to the Radeon R7 M260, which features GPU clock speed of 715 MHz, and 2048 MB of DDR3 RAM set to run at 1000 MHz through a 64-bit bus. It also is comprised of 384 Stream Processors, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R7 M260 is 25% faster than the GeForce 9400 GT 256MB overall, due to its higher data rate. (explain)

Radeon R7 M260		16000 MB/sec
GeForce 9400 GT 256MB		12800 MB/sec
	Difference: 3200 (25%)

Texel Rate

The Radeon R7 M260 will be a lot (more or less 290%) faster with regards to anisotropic filtering than the GeForce 9400 GT 256MB. (explain)

Radeon R7 M260		17160 Mtexels/sec
GeForce 9400 GT 256MB		4400 Mtexels/sec
	Difference: 12760 (290%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R7 M260 is a better choice, and very much so. (explain)

Radeon R7 M260		5720 Mpixels/sec
GeForce 9400 GT 256MB		2200 Mpixels/sec
	Difference: 3520 (160%)

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 max amount of information (in units of MB per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 are processed per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the 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 most pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant 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.