GeForce GTX Titan vs Radeon R9 M270X

Intro

Compare those specs to the Radeon R9 M270X, which features core speeds of 725 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX Titan is 301% quicker than the Radeon R9 M270X overall, because of its greater bandwidth. (explain)

GeForce GTX Titan		288384 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 216384 (301%)

Texel Rate

The GeForce GTX Titan should be quite a bit (more or less 547%) more effective at AF than the Radeon R9 M270X. (explain)

GeForce GTX Titan		187488 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 158488 (547%)

Pixel Rate

The GeForce GTX Titan should be a lot (about 246%) faster with regards to anti-aliasing than the Radeon R9 M270X, and also should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX Titan		40176 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 28576 (246%)

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 past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core 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 output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.