Radeon HD 7770 vs Radeon RX 470

Intro

Compare all that to the Radeon RX 470, which features core speeds of 926 MHz on the GPU, and 1650 MHz on the 8192 MB of GDDR5 memory. It features 2048 SPUs along with 128 TAUs and 32 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 470		11756 points
Radeon HD 7770		3180 points
	Difference: 8576 (270%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon RX 470		120 Watts
	Difference: 40 Watts (50%)

Memory Bandwidth

As far as performance goes, the Radeon RX 470 should in theory be a lot better than the Radeon HD 7770 overall. (explain)

Radeon RX 470		211200 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 139200 (193%)

Texel Rate

The Radeon RX 470 should be quite a bit (about 196%) better at AF than the Radeon HD 7770. (explain)

Radeon RX 470		118528 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 78528 (196%)

Pixel Rate

The Radeon RX 470 will be much (about 85%) faster with regards to full screen anti-aliasing than the Radeon HD 7770, and should be able to handle higher resolutions while still performing well. (explain)

Radeon RX 470		29632 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 13632 (85%)

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 (counted in megabytes per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip 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 number of ROPs by the the card's clock speed. 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 is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.