GeForce GTX Titan vs Radeon R9 M280X

Intro

Compare all that to the Radeon R9 M280X, which makes use of a 28 nm design. AMD has clocked the core speed at 900 MHz. The GDDR5 RAM is set to run at a speed of 1375 MHz on this specific model. It features 896 SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
GeForce GTX Titan		250 Watts
	Difference: 175 Watts (233%)

Memory Bandwidth

Theoretically, the GeForce GTX Titan should perform much faster than the Radeon R9 M280X in general. (explain)

GeForce GTX Titan		288384 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 200384 (228%)

Texel Rate

The GeForce GTX Titan will be a lot (about 272%) better at anisotropic filtering than the Radeon R9 M280X. (explain)

GeForce GTX Titan		187488 Mtexels/sec
Radeon R9 M280X		50400 Mtexels/sec
	Difference: 137088 (272%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX Titan is superior to the Radeon R9 M280X, by a large margin. (explain)

GeForce GTX Titan		40176 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 25776 (179%)

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 (counted in MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the video 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 Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.