Geforce GTX 670 vs Radeon R9 M385X

Intro

Compare all of that to the Radeon R9 M385X, which comes with a clock speed of 1100 MHz and a GDDR5 memory frequency of 1500 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is made up of 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Geforce GTX 670 should be quite a bit faster than the Radeon R9 M385X overall. (explain)

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

Texel Rate

The Geforce GTX 670 will be much (about 66%) more effective at texture filtering 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 (approximately 66%) faster with regards to anti-aliasing than the Radeon R9 M385X, and also should be capable of handling higher screen resolutions while still performing well. (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 maximum amount of information (measured in MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better 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 amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher 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 amount of pixels the video card could 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 core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.