Geforce GTX 690 vs Radeon R9 390 8G

Intro

Compare those specifications to the Radeon R9 390 8G, which features a core clock speed of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 512-bit memory bus, and makes use of a 28 nm design. It is comprised of 2560 SPUs, 160 Texture Address Units, and 64 Raster Operation Units.

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

Theoretically speaking, the Geforce GTX 690 should be a small 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 is quite a bit (approximately 46%) better 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 bit (approximately 9%) better at FSAA than the Geforce GTX 690, and capable of handling higher resolutions without losing too much performance. (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: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is worked out 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.