Radeon HD 6790 vs Radeon RX 470

Intro

Compare those specs to the Radeon RX 470, which comes with clock speeds of 926 MHz on the GPU, and 1650 MHz on the 8192 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 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

Radeon RX 470		11756 points
Radeon HD 6790		2150 points
	Difference: 9606 (447%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470		120 Watts
Radeon HD 6790		150 Watts
	Difference: 30 Watts (25%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 470 should be 57% quicker than the Radeon HD 6790 in general, due to its higher data rate. (explain)

Radeon RX 470		211200 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 76800 (57%)

Texel Rate

The Radeon RX 470 is much (more or less 253%) faster with regards to AF than the Radeon HD 6790. (explain)

Radeon RX 470		118528 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 84928 (253%)

Pixel Rate

The Radeon RX 470 will be quite a bit (more or less 120%) better at anti-aliasing than the Radeon HD 6790, and also will be able to handle higher resolutions while still performing well. (explain)

Radeon RX 470		29632 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 16192 (120%)

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 information (measured in megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.