Radeon HD 7950 vs Radeon R9 380 2G

Intro

Compare that to the Radeon R9 380 2G, which has a clock frequency of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It features 1792 SPUs, 112 TAUs, and 32 Raster Operation 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 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

As far as performance goes, the Radeon HD 7950 should theoretically be quite a bit superior to the Radeon R9 380 2G in general. (explain)

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

Texel Rate

The Radeon R9 380 2G will be a lot (approximately 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

The Radeon R9 380 2G will be quite a bit (about 21%) more effective at anti-aliasing than the Radeon HD 7950, and should be capable of handling higher screen resolutions more effectively. (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: Memory bandwidth is the max amount of information (counted in MB per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

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