GeForce GTX 1080 vs Radeon R9 M295X

Intro

Compare all that to the Radeon R9 M295X, which has core clock speeds of 750 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
GeForce GTX 1080		180 Watts
	Difference: 55 Watts (44%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 1080 should be a lot faster than the Radeon R9 M295X overall. (explain)

GeForce GTX 1080		327680 MB/sec
Radeon R9 M295X		176000 MB/sec
	Difference: 151680 (86%)

Texel Rate

The GeForce GTX 1080 will be quite a bit (about 168%) faster with regards to AF than the Radeon R9 M295X. (explain)

GeForce GTX 1080		257120 Mtexels/sec
Radeon R9 M295X		96000 Mtexels/sec
	Difference: 161120 (168%)

Pixel Rate

The GeForce GTX 1080 is a lot (more or less 329%) better at anti-aliasing than the Radeon R9 M295X, and should be able to handle higher screen resolutions better. (explain)

GeForce GTX 1080		102848 Mpixels/sec
Radeon R9 M295X		24000 Mpixels/sec
	Difference: 78848 (329%)

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: Bandwidth is the largest amount of data (measured in MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.