Radeon R9 390

The Radeon R9 390 video card is essentially the same R9 290. Although the Hawaii graphics processor was renamed Grenada, it was in fact produced using the same 28-nanometer process technology and included an identical number of functional units.

In the case of the R9 390, we are talking about 2560 streaming processors, 160 texture units and 64 ROPs. At the same time, the recommended clock speed GPU was increased from 947 MHz to 1000 MHz (+5,6%). The new adapter retained the 512-bit memory bus, but the operating frequency of the GDDR5 chips was also increased, significantly – to 6000 MHz, instead of the 5000 MHz recommended for the Radeon R9 290.

Another notable difference from its predecessor is that all Radeon R9 390 series graphics cards were offered with 8 GB of memory, while the R9 290 was equipped with 4 GB of local RAM. Doubled memory capacity and a 20% increase in its bandwidth could be considered a hint at the possibility of using the Radeon R9 390 for modes higher than 1440p. AMD's marketing brochures noted the possibility of comfortable gaming at a resolution of 4K.

Radeon R9 390 Specifications

Even after increasing operating frequencies and doubling the amount of memory, the thermal package of the reference Radeon R9 390 was kept within 275 W. To connect additional power, two connectors were standardly provided - 6- and 8-pin.