GeForce GTX Titan vs Radeon R9 M280X

Intro

Compare those specifications to the Radeon R9 M280X, which comes with a core clock speed of 900 MHz and a GDDR5 memory speed of 1375 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It features 896 SPUs, 56 Texture Address Units, and 16 ROPs.

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

Performance-wise, the GeForce GTX Titan should theoretically be a lot better than the Radeon R9 M280X overall. (explain)

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

Texel Rate

The GeForce GTX Titan is much (about 272%) better at texture filtering than the Radeon R9 M280X. (explain)

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

Pixel Rate

The GeForce GTX Titan is much (approximately 179%) more effective at AA than the Radeon R9 M280X, and will be capable of handling higher resolutions more effectively. (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 largest amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics 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 that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.