GeForce GTX Titan vs Radeon R9 M290X

Intro

Compare those specs to the Radeon R9 M290X, which has a GPU core clock speed of 850 MHz, and 4096 MB of GDDR5 memory running at 1200 MHz through a 256-bit bus. It also is made up of 1280 SPUs, 80 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically, the GeForce GTX Titan should be a lot faster than the Radeon R9 M290X in general. (explain)

GeForce GTX Titan		288384 MB/sec
Radeon R9 M290X		153600 MB/sec
	Difference: 134784 (88%)

Texel Rate

The GeForce GTX Titan will be a lot (approximately 176%) more effective at texture filtering than the Radeon R9 M290X. (explain)

GeForce GTX Titan		187488 Mtexels/sec
Radeon R9 M290X		68000 Mtexels/sec
	Difference: 119488 (176%)

Pixel Rate

The GeForce GTX Titan is a lot (approximately 48%) more effective at FSAA than the Radeon R9 M290X, and also capable of handling higher resolutions more effectively. (explain)

GeForce GTX Titan		40176 Mpixels/sec
Radeon R9 M290X		27200 Mpixels/sec
	Difference: 12976 (48%)

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 information (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses 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 amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.