GeForce GTX 580 vs Radeon R9 380 4G

Intro

Compare all that to the Radeon R9 380 4G, which has clock speeds of 970 MHz on the GPU, and 1425 MHz on the 4096 MB of GDDR5 memory. It features 1792 SPUs along with 112 TAUs and 32 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 380 4G		8837 points
GeForce GTX 580		4956 points
	Difference: 3881 (78%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 4G		190 Watts
GeForce GTX 580		244 Watts
	Difference: 54 Watts (28%)

Memory Bandwidth

Performance-wise, the GeForce GTX 580 should in theory be a bit better than the Radeon R9 380 4G in general. (explain)

GeForce GTX 580		192384 MB/sec
Radeon R9 380 4G		182400 MB/sec
	Difference: 9984 (5%)

Texel Rate

The Radeon R9 380 4G is much (about 120%) better at texture filtering than the GeForce GTX 580. (explain)

Radeon R9 380 4G		108640 Mtexels/sec
GeForce GTX 580		49408 Mtexels/sec
	Difference: 59232 (120%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 580 is a better choice, though not by far. (explain)

GeForce GTX 580		37056 Mpixels/sec
Radeon R9 380 4G		31040 Mpixels/sec
	Difference: 6016 (19%)

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 maximum amount of information (measured in MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.