Radeon R9 290 vs Radeon R9 390 8G

Intro

Compare all of that to the Radeon R9 390 8G, which features GPU clock speed of 1000 MHz, and 8192 MB of GDDR5 memory set to run at 1500 MHz through a 512-bit bus. It also is made up of 2560 Stream Processors, 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 R9 290		9876 points
	Difference: 2857 (29%)

Zcash Mining Hash Rate

Radeon R9 390 8G		326 Sol/s
Radeon R9 290		283 Sol/s
	Difference: 43 (15%)

Ethereum Mining Hash Rate

Radeon R9 290		29 Mh/s
Radeon R9 390 8G		28 Mh/s
	Difference: 1 (4%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 390 8G		275 Watts
Radeon R9 290		300 Watts
	Difference: 25 Watts (9%)

Memory Bandwidth

In theory, the Radeon R9 390 8G should perform a bit faster than the Radeon R9 290 overall. (explain)

Radeon R9 390 8G		384000 MB/sec
Radeon R9 290		320000 MB/sec
	Difference: 64000 (20%)

Texel Rate

The Radeon R9 390 8G will be quite a bit (more or less 25%) better at anisotropic filtering than the Radeon R9 290. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
Radeon R9 290		128000 Mtexels/sec
	Difference: 32000 (25%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 390 8G is a better choice, and very much so. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Radeon R9 290		51200 Mpixels/sec
	Difference: 12800 (25%)

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

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, 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 amount of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core speed of the card. 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, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.