Geforce GTX 690 vs Radeon R9 M375

Intro

Compare those specifications to the Radeon R9 M375, which has core speeds of 1015 MHz on the GPU, and 1100 MHz on the 4096 MB of DDR3 RAM. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Geforce GTX 690 should theoretically perform much faster than the Radeon R9 M375 in general. (explain)

Geforce GTX 690		384512 MB/sec
Radeon R9 M375		35200 MB/sec
	Difference: 349312 (992%)

Texel Rate

The Geforce GTX 690 will be much (approximately 477%) better at anisotropic filtering than the Radeon R9 M375. (explain)

Geforce GTX 690		234240 Mtexels/sec
Radeon R9 M375		40600 Mtexels/sec
	Difference: 193640 (477%)

Pixel Rate

The Geforce GTX 690 should be a lot (about 261%) more effective at AA than the Radeon R9 M375, and capable of handling higher resolutions better. (explain)

Geforce GTX 690		58560 Mpixels/sec
Radeon R9 M375		16240 Mpixels/sec
	Difference: 42320 (261%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 can be processed per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the 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 can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.