Geforce GTX 1080 Ti vs Radeon R9 M385X

Intro

Compare those specs to the Radeon R9 M385X, which uses a 28 nm design. AMD has clocked the core speed at 1100 MHz. The GDDR5 memory is set to run at a speed of 1500 MHz on this model. It features 896 SPUs as well as 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Geforce GTX 1080 Ti should perform quite a bit faster than the Radeon R9 M385X overall. (explain)

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

Texel Rate

The Geforce GTX 1080 Ti is quite a bit (approximately 438%) faster with regards to anisotropic 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

If using a high resolution is important to you, then the Geforce GTX 1080 Ti is the winner, by far. (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: Bandwidth is the max amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it must 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 AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.