Geforce GTX 780 vs Radeon R9 390X 8G

Intro

Compare those specifications to the Radeon R9 390X 8G, which features a core clock speed of 1050 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 2816 SPUs, 176 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 390X 8G		13555 points
Geforce GTX 780		10082 points
	Difference: 3473 (34%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G		32 Mh/s
Geforce GTX 780		20 Mh/s
	Difference: 12 (60%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the Radeon R9 390X 8G should be 33% quicker than the Geforce GTX 780 overall, due to its greater data rate. (explain)

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

Texel Rate

The Radeon R9 390X 8G should be a small bit (about 12%) better at texture filtering than the Geforce GTX 780. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Geforce GTX 780		165696 Mtexels/sec
	Difference: 19104 (12%)

Pixel Rate

The Radeon R9 390X 8G should be quite a bit (about 62%) faster with regards to AA than the Geforce GTX 780, and will be capable of handling higher screen resolutions better. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Geforce GTX 780		41424 Mpixels/sec
	Difference: 25776 (62%)

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 maximum amount of information (counted in MB per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 number of texture map elements (texels) that are processed in one second. This is worked out 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its 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 the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few 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.