Radeon HD 7850 vs Radeon R9 380 4G

Intro

Compare that to the Radeon R9 380 4G, which uses a 28 nm design. AMD has clocked the core frequency at 970 MHz. The GDDR5 memory runs at a frequency of 1425 MHz on this card. It features 1792 SPUs along with 112 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 380 4G		8837 points
Radeon HD 7850		5200 points
	Difference: 3637 (70%)

Ethereum Mining Hash Rate

Radeon R9 380 4G		21 Mh/s
Radeon HD 7850		13 Mh/s
	Difference: 8 (62%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850		130 Watts
Radeon R9 380 4G		190 Watts
	Difference: 60 Watts (46%)

Memory Bandwidth

As far as performance goes, the Radeon R9 380 4G should theoretically be a small bit superior to the Radeon HD 7850 in general. (explain)

Radeon R9 380 4G		182400 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 28800 (19%)

Texel Rate

The Radeon R9 380 4G should be much (approximately 97%) better at AF than the Radeon HD 7850. (explain)

Radeon R9 380 4G		108640 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 53600 (97%)

Pixel Rate

The Radeon R9 380 4G is a little bit (about 13%) faster with regards to anti-aliasing than the Radeon HD 7850, and also should be able to handle higher resolutions better. (explain)

Radeon R9 380 4G		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 max amount of data (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range 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 is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could 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 card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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.