Geforce GTX 690 vs Radeon R9 390X 8G

Intro

Compare those specs to the Radeon R9 390X 8G, which comes with clock speeds of 1050 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 memory. It features 2816 SPUs along with 176 Texture Address Units 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

Radeon R9 390X 8G		13555 points
Geforce GTX 690		13111 points
	Difference: 444 (3%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the Geforce GTX 690 should perform a bit faster than the Radeon R9 390X 8G overall. (explain)

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

Texel Rate

The Geforce GTX 690 will be a lot (about 27%) faster with regards to texture filtering than the Radeon R9 390X 8G. (explain)

Geforce GTX 690		234240 Mtexels/sec
Radeon R9 390X 8G		184800 Mtexels/sec
	Difference: 49440 (27%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 390X 8G is the winner, but it probably won't make a huge difference. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Geforce GTX 690		58560 Mpixels/sec
	Difference: 8640 (15%)

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 max amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 again. If 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units by the core clock 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount 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 also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.