Radeon HD 7790 vs Radeon R9 280

Intro

Compare that to the Radeon R9 280, which features GPU core speed of 933 MHz, and 3072 MB of GDDR5 RAM set to run at 1250 MHz through a 384-bit bus. It also is comprised of 1792 Stream Processors, 112 TAUs, 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

Radeon R9 280		7961 points
Radeon HD 7790		4330 points
	Difference: 3631 (84%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Radeon R9 280		250 Watts
	Difference: 165 Watts (194%)

Memory Bandwidth

Theoretically, the Radeon R9 280 should perform quite a bit faster than the Radeon HD 7790 in general. (explain)

Radeon R9 280		240000 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 144000 (150%)

Texel Rate

The Radeon R9 280 is a lot (approximately 87%) faster with regards to anisotropic filtering than the Radeon HD 7790. (explain)

Radeon R9 280		104496 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 48496 (87%)

Pixel Rate

The Radeon R9 280 should be a lot (more or less 87%) better at AA than the Radeon HD 7790, and should be capable of handling higher screen resolutions better. (explain)

Radeon R9 280		29856 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 13856 (87%)

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 largest amount of data (measured in MB per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core 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 processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its 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 speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.