Geforce GTX 770 vs Radeon R9 M385X

Intro

Compare that to the Radeon R9 M385X, which makes use of a 28 nm design. AMD has clocked the core speed at 1100 MHz. The GDDR5 memory runs at a speed of 1500 MHz on this model. It features 896 SPUs along with 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Geforce GTX 770 should in theory be quite a bit superior to the Radeon R9 M385X in general. (explain)

Geforce GTX 770		224384 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 128384 (134%)

Texel Rate

The Geforce GTX 770 will be much (more or less 117%) faster with regards to anisotropic filtering than the Radeon R9 M385X. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 72288 (117%)

Pixel Rate

If running with a high resolution is important to you, then the Geforce GTX 770 is superior to the Radeon R9 M385X, by far. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 15872 (90%)

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 max amount of data (counted in megabytes per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory per 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 - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.