Geforce GTX 1080 Ti vs Radeon R9 M385X

Intro

Compare all that to the Radeon R9 M385X, which comes with core speeds of 1100 MHz on the GPU, and 1500 MHz on the 4096 MB of GDDR5 memory. It features 896 SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Geforce GTX 1080 Ti should be a lot faster than the Radeon R9 M385X in general. (explain)

Geforce GTX 1080 Ti		495616 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 399616 (416%)

Texel Rate

The Geforce GTX 1080 Ti will be quite a bit (more or less 438%) better at texture filtering than the Radeon R9 M385X. (explain)

Geforce GTX 1080 Ti		331520 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 269920 (438%)

Pixel Rate

The Geforce GTX 1080 Ti is much (about 640%) faster with regards to FSAA than the Radeon R9 M385X, and should be capable of handling higher resolutions more effectively. (explain)

Geforce GTX 1080 Ti		130240 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 112640 (640%)

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 data (in units of MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in a 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 - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.