Radeon HD 7870 XT vs Radeon R9 380X

Intro

Compare those specs to the Radeon R9 380X, which uses a 28 nm design. AMD has clocked the core frequency at 970 MHz. The GDDR5 RAM works at a frequency of 1425 MHz on this specific model. It features 2048 SPUs as well as 128 TAUs 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 7870 XT		6390 points
	Difference: 3129 (49%)

Ethereum Mining Hash Rate

Radeon R9 380X		19 Mh/s
Radeon HD 7870 XT		15 Mh/s
	Difference: 4 (27%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 XT		185 Watts
Radeon R9 380X		190 Watts
	Difference: 5 Watts (3%)

Memory Bandwidth

Performance-wise, the Radeon HD 7870 XT should in theory be a small bit superior to the Radeon R9 380X in general. (explain)

Radeon HD 7870 XT		192000 MB/sec
Radeon R9 380X		182400 MB/sec
	Difference: 9600 (5%)

Texel Rate

The Radeon R9 380X should be a lot (more or less 40%) faster with regards to texture filtering than the Radeon HD 7870 XT. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon HD 7870 XT		88800 Mtexels/sec
	Difference: 35360 (40%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 380X is the winner, but not by far. (explain)

Radeon R9 380X		31040 Mpixels/sec
Radeon HD 7870 XT		29600 Mpixels/sec
	Difference: 1440 (5%)

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 maximum amount of information (counted in MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out 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 filling the screen with pixels (the image). The actual pixel output 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 reach the maximum fill rate.