Geforce GTX 670 vs Radeon R9 M385X

Intro

Compare that 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 memory. It features 896 SPUs along with 56 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Geforce GTX 670 should in theory be a lot faster than the Radeon R9 M385X in general. (explain)

Geforce GTX 670		192000 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 96000 (100%)

Texel Rate

The Geforce GTX 670 should be quite a bit (more or less 66%) more effective at AF than the Radeon R9 M385X. (explain)

Geforce GTX 670		102480 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 40880 (66%)

Pixel Rate

The Geforce GTX 670 will be a lot (about 66%) more effective at anti-aliasing than the Radeon R9 M385X, and able to handle higher screen resolutions without losing too much performance. (explain)

Geforce GTX 670		29280 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 11680 (66%)

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 (counted in MB per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics 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 maximum number of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount 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 also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.