Radeon HD 7770 vs Radeon RX 580

Intro

Compare those specifications to the Radeon RX 580, which features clock speeds of 1257 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR5 RAM. It features 2304 SPUs as well as 144 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 580		13630 points
Radeon HD 7770		3180 points
	Difference: 10450 (329%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon RX 580		185 Watts
	Difference: 105 Watts (131%)

Memory Bandwidth

The Radeon RX 580, in theory, should be much faster than the Radeon HD 7770 overall. (explain)

Radeon RX 580		262144 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 190144 (264%)

Texel Rate

The Radeon RX 580 will be quite a bit (about 353%) more effective at AF than the Radeon HD 7770. (explain)

Radeon RX 580		181008 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 141008 (353%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 580 is a better choice, by far. (explain)

Radeon RX 580		40224 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 24224 (151%)

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 (in units of MB per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.