GeForce GTX 780 Ti vs Radeon R9 390 8G

Intro

Compare all that to the Radeon R9 390 8G, which comes with a clock speed of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also makes use of a 512-bit memory bus, and uses a 28 nm design. It is made up of 2560 SPUs, 160 Texture Address Units, 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 390 8G		12733 points
GeForce GTX 780 Ti		10900 points
	Difference: 1833 (17%)

Ethereum Mining Hash Rate

Radeon R9 390 8G		28 Mh/s
GeForce GTX 780 Ti		19 Mh/s
	Difference: 9 (47%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 780 Ti		250 Watts
Radeon R9 390 8G		275 Watts
	Difference: 25 Watts (10%)

Memory Bandwidth

Performance-wise, the Radeon R9 390 8G should theoretically be just a bit better than the GeForce GTX 780 Ti overall. (explain)

Radeon R9 390 8G		384000 MB/sec
GeForce GTX 780 Ti		336000 MB/sec
	Difference: 48000 (14%)

Texel Rate

The GeForce GTX 780 Ti will be much (approximately 31%) more effective at texture filtering than the Radeon R9 390 8G. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 50000 (31%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 390 8G is superior to the GeForce GTX 780 Ti, by far. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
GeForce GTX 780 Ti		42000 Mpixels/sec
	Difference: 22000 (52%)

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 information (measured in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the 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 amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units by the core 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.