Radeon HD 7790 vs Radeon RX 460

Intro

Compare all that to the Radeon RX 460, which comes with GPU core speed of 1090 MHz, and 4096 MB of GDDR5 memory running at 1750 MHz through a 128-bit bus. It also is made up of 896 Stream Processors, 56 Texture Address Units, and 16 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 460		5595 points
Radeon HD 7790		4330 points
	Difference: 1265 (29%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460		75 Watts
Radeon HD 7790		85 Watts
	Difference: 10 Watts (13%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 460 will be 17% quicker than the Radeon HD 7790 overall, due to its greater bandwidth. (explain)

Radeon RX 460		112000 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 16000 (17%)

Texel Rate

The Radeon RX 460 will be just a bit (about 9%) more effective at anisotropic filtering than the Radeon HD 7790. (explain)

Radeon RX 460		61040 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 5040 (9%)

Pixel Rate

The Radeon RX 460 should be a small bit (more or less 9%) more effective at full screen anti-aliasing than the Radeon HD 7790, and also capable of handling higher resolutions more effectively. (explain)

Radeon RX 460		17440 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 1440 (9%)

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 maximum amount of information (in units of MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's 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 texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.