GeForce GTX 560 vs Radeon R9 M385X

Intro

Compare that to the Radeon R9 M385X, which features GPU clock speed of 1100 MHz, and 4096 MB of GDDR5 RAM running at 1500 MHz through a 128-bit bus. It also features 896 Stream Processors, 56 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GTX 560 should theoretically be much better than the Radeon R9 M385X in general. (explain)

GeForce GTX 560		128128 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 32128 (33%)

Texel Rate

The Radeon R9 M385X should be a lot (about 36%) more effective at anisotropic filtering than the GeForce GTX 560. (explain)

Radeon R9 M385X		61600 Mtexels/sec
GeForce GTX 560		45360 Mtexels/sec
	Difference: 16240 (36%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 560 is a better choice, and very much so. (explain)

GeForce GTX 560		25920 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 8320 (47%)

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 max amount of information (in units of MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip 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 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 filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.