Radeon R7 260X vs Radeon R9 390 8G

Intro

Compare those specifications to the Radeon R9 390 8G, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 memory runs at a frequency of 1500 MHz on this model. It features 2560 SPUs along with 160 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 390 8G		12733 points
Radeon R7 260X		4381 points
	Difference: 8352 (191%)

Ethereum Mining Hash Rate

Radeon R9 390 8G		28 Mh/s
Radeon R7 260X		14 Mh/s
	Difference: 14 (100%)

Zcash Mining Hash Rate

Radeon R9 390 8G		326 Sol/s
Radeon R7 260X		95 Sol/s
	Difference: 231 (243%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 260X		115 Watts
Radeon R9 390 8G		275 Watts
	Difference: 160 Watts (139%)

Memory Bandwidth

The Radeon R9 390 8G should in theory perform a lot faster than the Radeon R7 260X in general. (explain)

Radeon R9 390 8G		384000 MB/sec
Radeon R7 260X		104000 MB/sec
	Difference: 280000 (269%)

Texel Rate

The Radeon R9 390 8G is a lot (approximately 160%) better at AF than the Radeon R7 260X. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
Radeon R7 260X		61600 Mtexels/sec
	Difference: 98400 (160%)

Pixel Rate

The Radeon R9 390 8G should be a lot (more or less 264%) better at FSAA than the Radeon R7 260X, and also will be able to handle higher screen resolutions better. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Radeon R7 260X		17600 Mpixels/sec
	Difference: 46400 (264%)

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 transported across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines 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 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 max fill rate.