Radeon R9 290 vs Radeon R9 390X 8G

Intro

Compare all that to the Radeon R9 390X 8G, which features GPU clock speed of 1050 MHz, and 8192 MB of GDDR5 RAM running at 1500 MHz through a 512-bit bus. It also is comprised of 2816 SPUs, 176 Texture Address Units, 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 R9 290		9876 points
	Difference: 3679 (37%)

Zcash Mining Hash Rate

Radeon R9 390X 8G		330 Sol/s
Radeon R9 290		283 Sol/s
	Difference: 47 (17%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G		32 Mh/s
Radeon R9 290		29 Mh/s
	Difference: 3 (10%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The Radeon R9 390X 8G should theoretically be a small bit faster than the Radeon R9 290 overall. (explain)

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

Texel Rate

The Radeon R9 390X 8G will be a lot (about 44%) faster with regards to AF than the Radeon R9 290. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon R9 290		128000 Mtexels/sec
	Difference: 56800 (44%)

Pixel Rate

The Radeon R9 390X 8G will be much (about 31%) better at FSAA than the Radeon R9 290, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon R9 290		51200 Mpixels/sec
	Difference: 16000 (31%)

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 maximum amount of data (counted in megabytes per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the card's 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 quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.