Radeon HD 7850 vs Radeon RX 470 4GB

Intro

Compare all that to the Radeon RX 470 4GB, which features a clock speed of 926 MHz and a GDDR5 memory frequency of 1650 MHz. It also features a 256-bit bus, and makes use of a 14 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, 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.

Zcash Mining Hash Rate

Radeon RX 470 4GB		270 Sol/s
Radeon HD 7850		171 Sol/s
	Difference: 99 (58%)

Ethereum Mining Hash Rate

Radeon RX 470 4GB		27 Mh/s
Radeon HD 7850		13 Mh/s
	Difference: 14 (108%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 4GB		120 Watts
Radeon HD 7850		130 Watts
	Difference: 10 Watts (8%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 470 4GB is 38% faster than the Radeon HD 7850 overall, due to its greater data rate. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 57600 (38%)

Texel Rate

The Radeon RX 470 4GB should be much (about 115%) faster with regards to AF than the Radeon HD 7850. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 63488 (115%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 470 4GB is superior to the Radeon HD 7850, not by a very large margin though. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 2112 (8%)

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 maximum amount of data (measured in megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 can be applied 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 higher 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 number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.