Radeon HD 7970 vs Radeon R9 390X 8G

Intro

Compare all of that to the Radeon R9 390X 8G, which features a GPU core clock speed of 1050 MHz, and 8192 MB of GDDR5 memory running at 1500 MHz through a 512-bit bus. It also is comprised of 2816 Stream Processors, 176 TAUs, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

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 7970		8225 points
	Difference: 5330 (65%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G		32 Mh/s
Radeon HD 7970		21 Mh/s
	Difference: 11 (52%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7970		250 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 25 Watts (10%)

Memory Bandwidth

In theory, the Radeon R9 390X 8G should perform quite a bit faster than the Radeon HD 7970 in general. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon HD 7970		264000 MB/sec
	Difference: 120000 (45%)

Texel Rate

The Radeon R9 390X 8G should be a lot (approximately 56%) better at AF than the Radeon HD 7970. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon HD 7970		118400 Mtexels/sec
	Difference: 66400 (56%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 390X 8G is superior to the Radeon HD 7970, by a large margin. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon HD 7970		29600 Mpixels/sec
	Difference: 37600 (127%)

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 max amount of information (counted in MB per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per 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 - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.