GeForce GT 320 vs Radeon R7 260X

Intro

Compare those specifications to the Radeon R7 260X, which comes with GPU clock speed of 1100 MHz, and 2048 MB of GDDR5 RAM set to run at 1625 MHz through a 128-bit bus. It also is made up of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Radeon R7 260X		115 Watts
	Difference: 72 Watts (167%)

Memory Bandwidth

The Radeon R7 260X, in theory, should be a lot faster than the GeForce GT 320 in general. (explain)

Radeon R7 260X		104000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 78720 (311%)

Texel Rate

The Radeon R7 260X is much (about 375%) more effective at AF than the GeForce GT 320. (explain)

Radeon R7 260X		61600 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 48640 (375%)

Pixel Rate

The Radeon R7 260X is a lot (approximately 307%) more effective at FSAA than the GeForce GT 320, and also should be able to handle higher screen resolutions better. (explain)

Radeon R7 260X		17600 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 13280 (307%)

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 maximum amount of information (measured in MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.