Radeon HD 7770 vs Radeon RX 460

Intro

Compare all of that to the Radeon RX 460, which features GPU clock speed of 1090 MHz, and 4096 MB of GDDR5 RAM set to run at 1750 MHz through a 128-bit bus. It also is made up of 896 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

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 7770		3180 points
	Difference: 2415 (76%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460		75 Watts
Radeon HD 7770		80 Watts
	Difference: 5 Watts (7%)

Memory Bandwidth

In theory, the Radeon RX 460 should be 56% quicker than the Radeon HD 7770 in general, because of its greater bandwidth. (explain)

Radeon RX 460		112000 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 40000 (56%)

Texel Rate

The Radeon RX 460 should be quite a bit (about 53%) faster with regards to texture filtering than the Radeon HD 7770. (explain)

Radeon RX 460		61040 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 21040 (53%)

Pixel Rate

The Radeon RX 460 will be a bit (more or less 9%) better at AA than the Radeon HD 7770, and capable of handling higher resolutions while still performing well. (explain)

Radeon RX 460		17440 Mpixels/sec
Radeon HD 7770		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: Bandwidth is the max amount of information (in units of megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR memory, it must 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. 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 many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.