Radeon HD 7950 vs Radeon R9 390X 8G

Intro

Compare all of that to the Radeon R9 390X 8G, which comes with core clock speeds of 1050 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 RAM. It features 2816 SPUs along with 176 TAUs and 64 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 390X 8G		13555 points
Radeon HD 7950		7731 points
	Difference: 5824 (75%)

Zcash Mining Hash Rate

Radeon R9 390X 8G		330 Sol/s
Radeon HD 7950		235 Sol/s
	Difference: 95 (40%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G		32 Mh/s
Radeon HD 7950		21 Mh/s
	Difference: 11 (52%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950		200 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 75 Watts (38%)

Memory Bandwidth

The Radeon R9 390X 8G, in theory, should perform much faster than the Radeon HD 7950 overall. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon HD 7950		240000 MB/sec
	Difference: 144000 (60%)

Texel Rate

The Radeon R9 390X 8G is much (about 106%) better at anisotropic filtering than the Radeon HD 7950. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 95200 (106%)

Pixel Rate

The Radeon R9 390X 8G will be much (more or less 163%) more effective at anti-aliasing than the Radeon HD 7950, and able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 41600 (163%)

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 (in units of MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, 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 texture units of the card by the core clock speed of the chip. The better the texel rate, 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 most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.