Radeon HD 7870 XT vs Radeon R9 380 2G

Intro

Compare those specs to the Radeon R9 380 2G, which features core speeds of 970 MHz on the GPU, and 1425 MHz on the 2048 MB of GDDR5 RAM. It features 1792 SPUs along with 112 TAUs 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 2G		8850 points
Radeon HD 7870 XT		6390 points
	Difference: 2460 (38%)

Ethereum Mining Hash Rate

Radeon R9 380 2G		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 380 2G		190 Watts
	Difference: 5 Watts (3%)

Memory Bandwidth

Performance-wise, the Radeon HD 7870 XT should in theory be just a bit better than the Radeon R9 380 2G in general. (explain)

Radeon HD 7870 XT		192000 MB/sec
Radeon R9 380 2G		182400 MB/sec
	Difference: 9600 (5%)

Texel Rate

The Radeon R9 380 2G will be a lot (more or less 22%) faster with regards to anisotropic filtering than the Radeon HD 7870 XT. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
Radeon HD 7870 XT		88800 Mtexels/sec
	Difference: 19840 (22%)

Pixel Rate

The Radeon R9 380 2G will be a little bit (approximately 5%) better at FSAA than the Radeon HD 7870 XT, and also capable of handling higher resolutions better. (explain)

Radeon R9 380 2G		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: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.