Radeon HD 7850 vs Radeon R9 380X

Intro

Compare those specifications to the Radeon R9 380X, which comes with a clock frequency of 970 MHz and a GDDR5 memory frequency of 1425 MHz. It also features a 256-bit memory bus, and uses a 28 nm design. It features 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation 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 R9 380X		9519 points
Radeon HD 7850		5200 points
	Difference: 4319 (83%)

Ethereum Mining Hash Rate

Radeon R9 380X		19 Mh/s
Radeon HD 7850		13 Mh/s
	Difference: 6 (46%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850		130 Watts
Radeon R9 380X		190 Watts
	Difference: 60 Watts (46%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380X should perform a small bit faster than the Radeon HD 7850 in general. (explain)

Radeon R9 380X		182400 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 28800 (19%)

Texel Rate

The Radeon R9 380X should be much (approximately 126%) better at texture filtering than the Radeon HD 7850. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 69120 (126%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 380X is a better choice, though not by far. (explain)

Radeon R9 380X		31040 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 3520 (13%)

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 information (measured in megabytes per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units by the core clock 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.