Geforce GTX 780 vs Radeon R9 M385X

Intro

Compare those specifications to the Radeon R9 M385X, which comes with core speeds of 1100 MHz on the GPU, and 1500 MHz on the 4096 MB of GDDR5 RAM. It features 896 SPUs along with 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Geforce GTX 780 should in theory perform quite a bit faster than the Radeon R9 M385X in general. (explain)

Geforce GTX 780		288384 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 192384 (200%)

Texel Rate

The Geforce GTX 780 will be much (more or less 169%) better at AF than the Radeon R9 M385X. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 104096 (169%)

Pixel Rate

If running with a high resolution is important to you, then the Geforce GTX 780 is superior to the Radeon R9 M385X, by far. (explain)

Geforce GTX 780		41424 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 23824 (135%)

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 information (measured in megabytes per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount 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 handling 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 graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount 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 is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.