Radeon HD 7870 vs Radeon R9 380 4G

Intro

Compare those specifications to the Radeon R9 380 4G, which features core speeds of 970 MHz on the GPU, and 1425 MHz on the 4096 MB of GDDR5 RAM. It features 1792 SPUs as well as 112 Texture Address Units and 32 Rasterization Operator 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 380 4G		8837 points
Radeon HD 7870		6230 points
	Difference: 2607 (42%)

Ethereum Mining Hash Rate

Radeon R9 380 4G		21 Mh/s
Radeon HD 7870		16 Mh/s
	Difference: 5 (31%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870		175 Watts
Radeon R9 380 4G		190 Watts
	Difference: 15 Watts (9%)

Memory Bandwidth

Performance-wise, the Radeon R9 380 4G should in theory be a bit better than the Radeon HD 7870 in general. (explain)

Radeon R9 380 4G		182400 MB/sec
Radeon HD 7870		153600 MB/sec
	Difference: 28800 (19%)

Texel Rate

The Radeon R9 380 4G will be quite a bit (about 36%) faster with regards to AF than the Radeon HD 7870. (explain)

Radeon R9 380 4G		108640 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 28640 (36%)

Pixel Rate

The Radeon HD 7870 should be a little bit (about 3%) better at full screen anti-aliasing than the Radeon R9 380 4G, and also capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 7870		32000 Mpixels/sec
Radeon R9 380 4G		31040 Mpixels/sec
	Difference: 960 (3%)

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 transferred over the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type 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, High Dynamic Range and higher screen resolutions.

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