GeForce GTX 660 Ti vs Radeon R9 M365X

Intro

Compare that to the Radeon R9 M365X, which has a clock frequency of 925 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit memory bus, and makes use of a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GTX 660 Ti should theoretically be quite a bit superior to the Radeon R9 M365X in general. (explain)

GeForce GTX 660 Ti		144000 MB/sec
Radeon R9 M365X		72000 MB/sec
	Difference: 72000 (100%)

Texel Rate

The GeForce GTX 660 Ti is much (about 177%) more effective at texture filtering than the Radeon R9 M365X. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
Radeon R9 M365X		37000 Mtexels/sec
	Difference: 65480 (177%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 660 Ti is the winner, and very much so. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
Radeon R9 M365X		14800 Mpixels/sec
	Difference: 7160 (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 maximum amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. 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 is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.