GeForce GTX Titan vs Radeon R9 M275X

Intro

Compare that to the Radeon R9 M275X, which has core speeds of 900 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 memory. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
GeForce GTX Titan		250 Watts
	Difference: 200 Watts (400%)

Memory Bandwidth

In theory, the GeForce GTX Titan should be 301% quicker than the Radeon R9 M275X in general, because of its higher bandwidth. (explain)

GeForce GTX Titan		288384 MB/sec
Radeon R9 M275X		72000 MB/sec
	Difference: 216384 (301%)

Texel Rate

The GeForce GTX Titan should be much (approximately 421%) faster with regards to anisotropic filtering than the Radeon R9 M275X. (explain)

GeForce GTX Titan		187488 Mtexels/sec
Radeon R9 M275X		36000 Mtexels/sec
	Difference: 151488 (421%)

Pixel Rate

The GeForce GTX Titan is much (more or less 179%) better at anti-aliasing than the Radeon R9 M275X, and also should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX Titan		40176 Mpixels/sec
Radeon R9 M275X		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: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at 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 could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.