GeForce GTX Titan vs Radeon R9 M265X

Intro

Compare those specs to the Radeon R9 M265X, which features a clock speed of 575 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GTX Titan should in theory be quite a bit better than the Radeon R9 M265X overall. (explain)

GeForce GTX Titan		288384 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 216384 (301%)

Texel Rate

The GeForce GTX Titan is much (more or less 715%) more effective at AF than the Radeon R9 M265X. (explain)

GeForce GTX Titan		187488 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 164488 (715%)

Pixel Rate

The GeForce GTX Titan should be a lot (more or less 337%) more effective at anti-aliasing than the Radeon R9 M265X, and also will be capable of handling higher screen resolutions better. (explain)

GeForce GTX Titan		40176 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 30976 (337%)

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 maximum amount of data (in units of MB per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's 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 number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.