Geforce GTX 780 vs Radeon R9 280X

Intro

Compare those specifications to the Radeon R9 280X, which comes with a core clock speed of 850 MHz and a GDDR5 memory speed of 1500 MHz. It also features a 384-bit bus, and uses a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 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

Geforce GTX 780		10082 points
Radeon R9 280X		8886 points
	Difference: 1196 (13%)

Ethereum Mining Hash Rate

Radeon R9 280X		21 Mh/s
Geforce GTX 780		20 Mh/s
	Difference: 1 (5%)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically speaking, the Geforce GTX 780 is 0% faster than the Radeon R9 280X in general, due to its higher data rate. (explain)

Geforce GTX 780		288384 MB/sec
Radeon R9 280X		288000 MB/sec
	Difference: 384 (0%)

Texel Rate

The Geforce GTX 780 should be quite a bit (about 52%) faster with regards to anisotropic filtering than the Radeon R9 280X. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon R9 280X		108800 Mtexels/sec
	Difference: 56896 (52%)

Pixel Rate

The Geforce GTX 780 should be much (approximately 52%) faster with regards to full screen anti-aliasing than the Radeon R9 280X, and also capable of handling higher screen resolutions without slowing down too much. (explain)

Geforce GTX 780		41424 Mpixels/sec
Radeon R9 280X		27200 Mpixels/sec
	Difference: 14224 (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: Bandwidth is the maximum amount of information (in units of MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few 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.