GeForce GTX 860M vs Radeon R7 250X 2GB

Intro

Compare all of that to the Radeon R7 250X 2GB, which features a clock speed of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
Radeon R7 250X 2GB		95 Watts
	Difference: 50 Watts (111%)

Memory Bandwidth

Theoretically, the Radeon R7 250X 2GB should perform a little bit faster than the GeForce GTX 860M in general. (explain)

Radeon R7 250X 2GB		72000 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 8000 (13%)

Texel Rate

The GeForce GTX 860M should be much (approximately 91%) faster with regards to anisotropic filtering than the Radeon R7 250X 2GB. (explain)

GeForce GTX 860M		76512 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 36512 (91%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R7 250X 2GB is the winner, by a large margin. (explain)

Radeon R7 250X 2GB		16000 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 3248 (25%)

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 information (measured in MB 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. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 can be applied in one second. This is calculated by multiplying the total 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 number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs 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 also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.