GeForce GTX 780 Ti vs Radeon R9 M270X

Intro

Compare those specs to the Radeon R9 M270X, which comes with GPU clock speed of 725 MHz, and 2048 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 780 Ti should theoretically perform much faster than the Radeon R9 M270X overall. (explain)

GeForce GTX 780 Ti		336000 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 264000 (367%)

Texel Rate

The GeForce GTX 780 Ti should be quite a bit (approximately 624%) faster with regards to AF than the Radeon R9 M270X. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 181000 (624%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 780 Ti is a better choice, by far. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 30400 (262%)

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 maximum amount of information (counted in MB per second) that can be transported across 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. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount of texture units 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the card's 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 lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.