Geforce GTX 780 vs Radeon R9 390 8G

Intro

Compare those specs to the Radeon R9 390 8G, which features a clock speed of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 512-bit memory bus, and makes use of a 28 nm design. It features 2560 SPUs, 160 TAUs, and 64 Raster Operation Units.

Display Graphs

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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 390 8G		12733 points
Geforce GTX 780		10082 points
	Difference: 2651 (26%)

Ethereum Mining Hash Rate

Radeon R9 390 8G		28 Mh/s
Geforce GTX 780		20 Mh/s
	Difference: 8 (40%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the Radeon R9 390 8G should perform quite a bit faster than the Geforce GTX 780 in general. (explain)

Radeon R9 390 8G		384000 MB/sec
Geforce GTX 780		288384 MB/sec
	Difference: 95616 (33%)

Texel Rate

The Geforce GTX 780 will be just a bit (about 4%) faster with regards to texture filtering than the Radeon R9 390 8G. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 5696 (4%)

Pixel Rate

The Radeon R9 390 8G will be a lot (more or less 54%) better at anti-aliasing than the Geforce GTX 780, and also should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 390 8G		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: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines 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 is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.