Geforce GTX 690 vs Radeon R9 390 8G

Intro

Compare that to the Radeon R9 390 8G, which comes with a clock speed of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also features a 512-bit bus, and uses a 28 nm design. It is made up of 2560 SPUs, 160 TAUs, and 64 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Geforce GTX 690		13111 points
Radeon R9 390 8G		12733 points
	Difference: 378 (3%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 390 8G		275 Watts
Geforce GTX 690		300 Watts
	Difference: 25 Watts (9%)

Memory Bandwidth

The Geforce GTX 690, in theory, should perform just a bit faster than the Radeon R9 390 8G overall. (explain)

Geforce GTX 690		384512 MB/sec
Radeon R9 390 8G		384000 MB/sec
	Difference: 512 (0%)

Texel Rate

The Geforce GTX 690 should be quite a bit (about 46%) more effective at anisotropic filtering than the Radeon R9 390 8G. (explain)

Geforce GTX 690		234240 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 74240 (46%)

Pixel Rate

The Radeon R9 390 8G should be a little bit (approximately 9%) more effective at AA than the Geforce GTX 690, and should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Geforce GTX 690		58560 Mpixels/sec
	Difference: 5440 (9%)

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: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. 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 rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.