Geforce GTX 690 vs Radeon R9 390X 8G

Intro

Compare that to the Radeon R9 390X 8G, which has clock speeds of 1050 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 memory. It features 2816 SPUs as well as 176 Texture Address Units and 64 Rasterization Operator 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

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 will be 0% quicker than the Radeon R9 390X 8G overall, because of its greater data rate. (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 much (more or less 27%) faster with regards to AF 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

The Radeon R9 390X 8G is a small bit (approximately 15%) better at full screen anti-aliasing than the Geforce GTX 690, and also will be capable of handling higher resolutions without slowing down too much. (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 maximum amount of information (counted in megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, it must 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its 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 - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill 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.