GeForce GTX 780 Ti vs Radeon R9 M290X

Intro

Compare those specifications to the Radeon R9 M290X, which uses a 28 nm design. AMD has set the core frequency at 850 MHz. The GDDR5 memory is set to run at a speed of 1200 MHz on this card. It features 1280 SPUs as well as 80 TAUs and 32 ROPs.

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

The GeForce GTX 780 Ti should theoretically be quite a bit faster than the Radeon R9 M290X in general. (explain)

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

Texel Rate

The GeForce GTX 780 Ti is quite a bit (about 209%) more effective at texture 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

The GeForce GTX 780 Ti is quite a bit (approximately 54%) better at FSAA than the Radeon R9 M290X, and should be capable of handling higher screen resolutions while still performing well. (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 maximum amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can 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 ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.