GeForce GTX 465 vs Radeon R9 380 2G

Intro

Compare those specs to the Radeon R9 380 2G, which has GPU clock speed of 970 MHz, and 2048 MB of GDDR5 RAM set to run at 1425 MHz through a 256-bit bus. It also features 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

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

The Radeon R9 380 2G should in theory perform quite a bit 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 is a lot (about 307%) faster with regards to anisotropic 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 high levels of AA is important to you, then the Radeon R9 380 2G is a better choice, 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 largest amount of information (measured in MB per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum 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 clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.