GeForce GTX 465 vs Radeon R9 380X

Intro

Compare those specs to the Radeon R9 380X, which has GPU clock speed of 970 MHz, and 4096 MB of GDDR5 memory running at 1425 MHz through a 256-bit bus. It also features 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the Radeon R9 380X should perform a lot faster than the GeForce GTX 465 in general. (explain)

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

Texel Rate

The Radeon R9 380X should be quite a bit (more or less 365%) better at texture filtering than the GeForce GTX 465. (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 97452 (365%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 380X is a better choice, by far. (explain)

Radeon R9 380X		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 data (counted in megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.