GeForce GTX 780 Ti vs Radeon R9 M290X

Intro

Compare all of that to the Radeon R9 M290X, which makes use of a 28 nm design. AMD has set the core speed at 850 MHz. The GDDR5 memory works at a speed of 1200 MHz on this particular card. It features 1280 SPUs as well as 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X		100 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 150 Watts (150%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 780 Ti is 119% faster than the Radeon R9 M290X overall, due to its greater bandwidth. (explain)

GeForce GTX 780 Ti		336000 MB/sec
Radeon R9 M290X		153600 MB/sec
	Difference: 182400 (119%)

Texel Rate

The GeForce GTX 780 Ti will be much (approximately 209%) faster with regards to anisotropic filtering than the Radeon R9 M290X. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
Radeon R9 M290X		68000 Mtexels/sec
	Difference: 142000 (209%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 780 Ti is the winner, by far. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
Radeon R9 M290X		27200 Mpixels/sec
	Difference: 14800 (54%)

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 data (measured in MB per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is worked out 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.