Radeon HD 7950 vs Radeon R9 380 2G

Intro

Compare those specifications to the Radeon R9 380 2G, which comes with a GPU core clock speed of 970 MHz, and 2048 MB of GDDR5 RAM set to run at 1425 MHz through a 256-bit bus. It also is comprised of 1792 Stream Processors, 112 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 380 2G		8850 points
Radeon HD 7950		7731 points
	Difference: 1119 (14%)

Ethereum Mining Hash Rate

Radeon HD 7950		21 Mh/s
Radeon R9 380 2G		19 Mh/s
	Difference: 2 (11%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 2G		190 Watts
Radeon HD 7950		200 Watts
	Difference: 10 Watts (5%)

Memory Bandwidth

The Radeon HD 7950 should in theory be quite a bit faster than the Radeon R9 380 2G overall. (explain)

Radeon HD 7950		240000 MB/sec
Radeon R9 380 2G		182400 MB/sec
	Difference: 57600 (32%)

Texel Rate

The Radeon R9 380 2G should be a lot (more or less 21%) better at anisotropic filtering than the Radeon HD 7950. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 19040 (21%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 380 2G is the winner, by a large margin. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 5440 (21%)

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 data (measured in megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better 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 amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video 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 - 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 quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.