GeForce GTX 580 vs Radeon R9 Nano

Intro

Compare all of that to the Radeon R9 Nano, which has core clock speeds of 1000 MHz on the GPU, and 500 MHz on the 4096 MB of HBM RAM. It features 4096 SPUs along with 256 Texture Address Units and 64 ROPs.

Display Graphs

Hide Graphs

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 Nano		14918 points
GeForce GTX 580		4956 points
	Difference: 9962 (201%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 Nano		175 Watts
GeForce GTX 580		244 Watts
	Difference: 69 Watts (39%)

Memory Bandwidth

Performance-wise, the Radeon R9 Nano should in theory be quite a bit superior to the GeForce GTX 580 overall. (explain)

Radeon R9 Nano		512000 MB/sec
GeForce GTX 580		192384 MB/sec
	Difference: 319616 (166%)

Texel Rate

The Radeon R9 Nano is a lot (more or less 418%) more effective at texture filtering than the GeForce GTX 580. (explain)

Radeon R9 Nano		256000 Mtexels/sec
GeForce GTX 580		49408 Mtexels/sec
	Difference: 206592 (418%)

Pixel Rate

The Radeon R9 Nano is much (approximately 73%) more effective at FSAA than the GeForce GTX 580, and also will be able to handle higher screen resolutions better. (explain)

Radeon R9 Nano		64000 Mpixels/sec
GeForce GTX 580		37056 Mpixels/sec
	Difference: 26944 (73%)

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: Memory bandwidth is the max amount of data (counted in MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.