GeForce GTX 580 vs Radeon R9 390X 8G

Intro

Compare those specifications to the Radeon R9 390X 8G, which features core 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 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

Radeon R9 390X 8G		13555 points
GeForce GTX 580		4956 points
	Difference: 8599 (174%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 580		244 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 31 Watts (13%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 390X 8G is 100% faster than the GeForce GTX 580 overall, because of its higher bandwidth. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce GTX 580		192384 MB/sec
	Difference: 191616 (100%)

Texel Rate

The Radeon R9 390X 8G will be a lot (approximately 274%) more effective at AF than the GeForce GTX 580. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
GeForce GTX 580		49408 Mtexels/sec
	Difference: 135392 (274%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 390X 8G is a better choice, by far. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce GTX 580		37056 Mpixels/sec
	Difference: 30144 (81%)

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.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (counted in MB per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 applied in one second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.