Radeon HD 7870 vs Radeon R9 380X

Intro

Compare all that to the Radeon R9 380X, which comes with a core clock speed of 970 MHz and a GDDR5 memory frequency of 1425 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It features 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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 7870		6230 points
	Difference: 3289 (53%)

Ethereum Mining Hash Rate

Radeon R9 380X		19 Mh/s
Radeon HD 7870		16 Mh/s
	Difference: 3 (19%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The Radeon R9 380X should theoretically perform just a bit faster than the Radeon HD 7870 overall. (explain)

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

Texel Rate

The Radeon R9 380X should be quite a bit (approximately 55%) better at anisotropic filtering than the Radeon HD 7870. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 44160 (55%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 7870 is a better choice, but not by far. (explain)

Radeon HD 7870		32000 Mpixels/sec
Radeon R9 380X		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: Bandwidth is the max amount of information (counted in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If 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, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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 - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.