Radeon HD 7850 vs Radeon R9 390X 8G

Intro

Compare those specifications to the Radeon R9 390X 8G, which comes with a GPU core clock speed of 1050 MHz, and 8192 MB of GDDR5 memory running at 1500 MHz through a 512-bit bus. It also features 2816 Stream Processors, 176 TAUs, and 64 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 R9 390X 8G		13555 points
Radeon HD 7850		5200 points
	Difference: 8355 (161%)

Zcash Mining Hash Rate

Radeon R9 390X 8G		330 Sol/s
Radeon HD 7850		171 Sol/s
	Difference: 159 (93%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G		32 Mh/s
Radeon HD 7850		13 Mh/s
	Difference: 19 (146%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850		130 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 145 Watts (112%)

Memory Bandwidth

As far as performance goes, the Radeon R9 390X 8G should theoretically be much superior to the Radeon HD 7850 in general. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 230400 (150%)

Texel Rate

The Radeon R9 390X 8G should be much (more or less 236%) faster with regards to texture filtering than the Radeon HD 7850. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 129760 (236%)

Pixel Rate

The Radeon R9 390X 8G is quite a bit (about 144%) faster with regards to FSAA than the Radeon HD 7850, and also able to handle higher resolutions while still performing well. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 39680 (144%)

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 max amount of data (counted in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video 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 maximum amount of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.