Radeon HD 7850 vs Radeon R9 380X

Intro

Compare those specifications to the Radeon R9 380X, which features a clock frequency of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is made up 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.

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

In theory, the Radeon R9 380X should be just a bit faster than the Radeon HD 7850 overall. (explain)

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

Texel Rate

The Radeon R9 380X will be quite a bit (about 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

The Radeon R9 380X will be just a bit (about 13%) faster with regards to anti-aliasing than the Radeon HD 7850, and able to handle higher resolutions while still performing well. (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: Bandwidth is the max amount of information (in units of MB per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, the result should 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes 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 memory bandwidth is, the lower the potential to get to the max fill rate.