Geforce GTX 780 vs Radeon R9 Nano

Intro

Compare those specifications to the Radeon R9 Nano, which comes with a clock speed of 1000 MHz and a HBM memory frequency of 500 MHz. It also makes use of a 4096-bit memory bus, and makes use of a 28 nm design. It features 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 780		10082 points
	Difference: 4836 (48%)

Ethereum Mining Hash Rate

Radeon R9 Nano		30 Mh/s
Geforce GTX 780		20 Mh/s
	Difference: 10 (50%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 Nano		175 Watts
Geforce GTX 780		250 Watts
	Difference: 75 Watts (43%)

Memory Bandwidth

The Radeon R9 Nano, in theory, should perform much faster than the Geforce GTX 780 overall. (explain)

Radeon R9 Nano		512000 MB/sec
Geforce GTX 780		288384 MB/sec
	Difference: 223616 (78%)

Texel Rate

The Radeon R9 Nano should be a lot (approximately 54%) faster with regards to anisotropic filtering than the Geforce GTX 780. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Geforce GTX 780		165696 Mtexels/sec
	Difference: 90304 (54%)

Pixel Rate

The Radeon R9 Nano should be quite a bit (about 54%) faster with regards to full screen anti-aliasing than the Geforce GTX 780, and also will be able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 Nano		64000 Mpixels/sec
Geforce GTX 780		41424 Mpixels/sec
	Difference: 22576 (54%)

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 max amount of information (measured in MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.