Radeon HD 6770 vs Radeon RX 550

Intro

Compare those specs to the Radeon RX 550, which uses a 14 nm design. AMD has clocked the core frequency at 1100 MHz. The GDDR5 RAM works at a frequency of 1750 MHz on this particular model. It features 512 SPUs along with 32 TAUs and 16 Rasterization Operator 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 550		3507 points
Radeon HD 6770		1520 points
	Difference: 1987 (131%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
Radeon HD 6770		108 Watts
	Difference: 58 Watts (116%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 550 should be 71% faster than the Radeon HD 6770 in general, because of its higher data rate. (explain)

Radeon RX 550		114688 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 47488 (71%)

Texel Rate

The Radeon HD 6770 will be just a bit (more or less 2%) faster with regards to anisotropic filtering than the Radeon RX 550. (explain)

Radeon HD 6770		36000 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 800 (2%)

Pixel Rate

The Radeon RX 550 is much (about 22%) faster with regards to AA than the Radeon HD 6770, and also should be able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 550		17600 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 3200 (22%)

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 (measured in MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.