Geforce GTX 680 vs Radeon R9 Nano

Intro

Compare that to the Radeon R9 Nano, which features a clock frequency of 1000 MHz and a HBM memory speed of 500 MHz. It also makes use of a 4096-bit bus, and makes use of a 28 nm design. It is made up of 4096 SPUs, 256 TAUs, and 64 Raster Operation Units.

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 680		7650 points
	Difference: 7268 (95%)

Ethereum Mining Hash Rate

Radeon R9 Nano		30 Mh/s
Geforce GTX 680		16 Mh/s
	Difference: 14 (88%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 Nano		175 Watts
Geforce GTX 680		195 Watts
	Difference: 20 Watts (11%)

Memory Bandwidth

As far as performance goes, the Radeon R9 Nano should in theory be a lot better than the Geforce GTX 680 in general. (explain)

Radeon R9 Nano		512000 MB/sec
Geforce GTX 680		192256 MB/sec
	Difference: 319744 (166%)

Texel Rate

The Radeon R9 Nano should be a lot (more or less 99%) better at anisotropic filtering than the Geforce GTX 680. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Geforce GTX 680		128768 Mtexels/sec
	Difference: 127232 (99%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 Nano is a better choice, by a large margin. (explain)

Radeon R9 Nano		64000 Mpixels/sec
Geforce GTX 680		32192 Mpixels/sec
	Difference: 31808 (99%)

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 maximum amount of information (in units of MB per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of 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.