Geforce GTX 780 vs Radeon R9 270

Intro

Compare those specs to the Radeon R9 270, which comes with a GPU core clock speed of 900 MHz, and 2048 MB of GDDR5 memory set to run at 1400 MHz through a 256-bit bus. It also features 1280 Stream Processors, 80 Texture Address Units, and 32 ROPs.

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 270		5943 points
	Difference: 4139 (70%)

Ethereum Mining Hash Rate

Geforce GTX 780		20 Mh/s
Radeon R9 270		15 Mh/s
	Difference: 5 (33%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270		150 Watts
Geforce GTX 780		250 Watts
	Difference: 100 Watts (67%)

Memory Bandwidth

Theoretically, the Geforce GTX 780 should be a lot faster than the Radeon R9 270 overall. (explain)

Geforce GTX 780		288384 MB/sec
Radeon R9 270		179200 MB/sec
	Difference: 109184 (61%)

Texel Rate

The Geforce GTX 780 is a lot (approximately 130%) better at anisotropic filtering than the Radeon R9 270. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon R9 270		72000 Mtexels/sec
	Difference: 93696 (130%)

Pixel Rate

The Geforce GTX 780 should be quite a bit (more or less 44%) faster with regards to full screen anti-aliasing than the Radeon R9 270, and also capable of handling higher resolutions more effectively. (explain)

Geforce GTX 780		41424 Mpixels/sec
Radeon R9 270		28800 Mpixels/sec
	Difference: 12624 (44%)

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 (counted in megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core 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 rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.