GeForce GTX 465 vs Radeon R9 M395X

Intro

Compare all of that to the Radeon R9 M395X, which features core speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce GTX 465		200 Watts
	Difference: 75 Watts (60%)

Memory Bandwidth

The Radeon R9 M395X should theoretically be much faster than the GeForce GTX 465 in general. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 57408 (56%)

Texel Rate

The Radeon R9 M395X should be much (more or less 247%) faster with regards to texture filtering than the GeForce GTX 465. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 65836 (247%)

Pixel Rate

The Radeon R9 M395X will be a little bit (about 19%) better at full screen anti-aliasing than the GeForce GTX 465, and also will be able to handle higher screen resolutions better. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 3712 (19%)

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 (in units of megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 can be applied per second. This figure is worked out by multiplying the total amount of 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 a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.