Radeon HD 7770 vs Radeon RX 570

Intro

Compare those specifications to the Radeon RX 570, which comes with a clock speed of 1168 MHz and a GDDR5 memory speed of 1750 MHz. It also features a 256-bit memory bus, and uses a 14 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation 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 570		12108 points
Radeon HD 7770		3180 points
	Difference: 8928 (281%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon RX 570		150 Watts
	Difference: 70 Watts (88%)

Memory Bandwidth

The Radeon RX 570, in theory, should be much faster than the Radeon HD 7770 overall. (explain)

Radeon RX 570		229376 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 157376 (219%)

Texel Rate

The Radeon RX 570 should be much (about 274%) better at texture filtering than the Radeon HD 7770. (explain)

Radeon RX 570		149504 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 109504 (274%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon RX 570 is a better choice, by a large margin. (explain)

Radeon RX 570		37376 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 21376 (134%)

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 information (in units of MB per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.