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GeForce GTX 580 vs Radeon R9 380 2G

Intro

The GeForce GTX 580 features a clock frequency of 772 MHz and a GDDR5 memory speed of 1002 MHz. It also uses a 384-bit memory bus, and makes use of a 40 nm design. It features 512 SPUs, 64 TAUs, and 48 Raster Operation Units.

Compare that to the Radeon R9 380 2G, which uses a 28 nm design. AMD has clocked the core frequency at 970 MHz. The GDDR5 memory runs at a frequency of 1425 MHz on this particular card. It features 1792 SPUs along with 112 Texture Address Units and 32 ROPs.

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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 2G		8850 points
GeForce GTX 580		4956 points
	Difference: 3894 (79%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 2G		190 Watts
GeForce GTX 580		244 Watts
	Difference: 54 Watts (28%)

Memory Bandwidth

Theoretically, the GeForce GTX 580 should be a little bit faster than the Radeon R9 380 2G overall. (explain)

GeForce GTX 580		192384 MB/sec
Radeon R9 380 2G		182400 MB/sec
	Difference: 9984 (5%)

Texel Rate

The Radeon R9 380 2G will be much (about 120%) better at texture filtering than the GeForce GTX 580. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
GeForce GTX 580		49408 Mtexels/sec
	Difference: 59232 (120%)

Pixel Rate

The GeForce GTX 580 should be a bit (more or less 19%) better at FSAA than the Radeon R9 380 2G, and also will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 580		37056 Mpixels/sec
Radeon R9 380 2G		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

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GeForce GTX 580

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Radeon R9 380 2G

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model	GeForce GTX 580	Radeon R9 380 2G
Manufacturer	nVidia	AMD
Year	November 2010	June 2015
Code Name	GF110	Antigua PRO
Memory	1536 MB	2048 MB
Core Speed	772 MHz	970 MHz
Memory Speed	4008 MHz	5700 MHz
Power (Max TDP)	244 watts	190 watts
Bandwidth	192384 MB/sec	182400 MB/sec
Texel Rate	49408 Mtexels/sec	108640 Mtexels/sec
Pixel Rate	37056 Mpixels/sec	31040 Mpixels/sec
Unified Shaders	512	1792
Texture Mapping Units	64	112
Render Output Units	48	32
Bus Type	GDDR5	GDDR5
Bus Width	384-bit	256-bit
Fab Process	40 nm	28 nm
Transistors	3000 million	5000 million
Bus	PCIe x16	PCIe 3.0 ×16
DirectX Version	DirectX 11	DirectX 12.0
OpenGL Version	OpenGL 4.1	OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could 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 colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

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