Radeon HD 6790 vs Radeon R9 290X

Intro

Compare those specifications to the Radeon R9 290X, which features a GPU core clock speed of 800 MHz, and 4096 MB of GDDR5 RAM set to run at 1250 MHz through a 512-bit bus. It also is made up of 2816 Stream Processors, 176 Texture Address Units, and 64 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 290X		10609 points
Radeon HD 6790		2150 points
	Difference: 8459 (393%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790		150 Watts
Radeon R9 290X		300 Watts
	Difference: 150 Watts (100%)

Memory Bandwidth

The Radeon R9 290X should theoretically be a lot faster than the Radeon HD 6790 in general. (explain)

Radeon R9 290X		320000 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 185600 (138%)

Texel Rate

The Radeon R9 290X will be much (approximately 319%) better at AF than the Radeon HD 6790. (explain)

Radeon R9 290X		140800 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 107200 (319%)

Pixel Rate

The Radeon R9 290X should be a lot (more or less 281%) more effective at anti-aliasing than the Radeon HD 6790, and will be able to handle higher screen resolutions better. (explain)

Radeon R9 290X		51200 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 37760 (281%)

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 max amount of data (counted in MB per second) that can be transferred across the external memory interface within a 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 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure 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 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 write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.