Geforce GTX 1080 Ti vs Radeon R7 250X 2GB

Intro

Compare all that to the Radeon R7 250X 2GB, which uses a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM is set to run at a frequency of 1125 MHz on this specific model. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
Geforce GTX 1080 Ti		250 Watts
	Difference: 155 Watts (163%)

Memory Bandwidth

In theory, the Geforce GTX 1080 Ti will be 588% faster than the Radeon R7 250X 2GB overall, due to its greater data rate. (explain)

Geforce GTX 1080 Ti		495616 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 423616 (588%)

Texel Rate

The Geforce GTX 1080 Ti should be a lot (about 729%) better at AF than the Radeon R7 250X 2GB. (explain)

Geforce GTX 1080 Ti		331520 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 291520 (729%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 1080 Ti is the winner, and very much so. (explain)

Geforce GTX 1080 Ti		130240 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 114240 (714%)

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 maximum amount of information (in units of MB per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units 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 rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.