GeForce GTX 465 vs Radeon R9 380 2G

Intro

Compare those specifications to the Radeon R9 380 2G, which makes use of a 28 nm design. AMD has set the core speed at 970 MHz. The GDDR5 RAM is set to run at a frequency of 1425 MHz on this specific model. It features 1792 SPUs along with 112 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 2G		190 Watts
GeForce GTX 465		200 Watts
	Difference: 10 Watts (5%)

Memory Bandwidth

Theoretically, the Radeon R9 380 2G should be a lot faster than the GeForce GTX 465 in general. (explain)

Radeon R9 380 2G		182400 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 79808 (78%)

Texel Rate

The Radeon R9 380 2G will be quite a bit (about 307%) better at texture filtering than the GeForce GTX 465. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 81932 (307%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 380 2G is the winner, and very much so. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 11616 (60%)

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 past the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number 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 fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.