Stefan Mileschin

AMD wrapped up today's GPU launch marathon, with the Radeon R9 390 series; which includes the R9 390, and the R9 390X. The Radeon R9 390 is priced at US $329, and offers performance competitive to the GeForce GTX 970. The R9 390X, on the other hand, is starts at US $429, and offers performance that's between the GTX 970 and GTX 980, while being closer to the latter. Both are based on the 28 nm "Grenada" silicon, which is the "Hawaii" silicon re-hashed.

The R9 390 packs 2,560 stream processors, 160 TMUs, 64 ROPs; while the R9 390X offers 2,816 stream processors, 176 TMUs, and 64 ROPs. Both cards offer 8 GB of GDDR5 memory, across the chips' 512-bit wide memory interfaces. Both cards let you game at 1440p with settings maxed out; or 4K Ultra HD, with reasonably high eye-candy. The R9 390 features core clock speeds of 1000 MHz, while the R9 390X tops that with 1050 MHz core. The memory on both cards, is clocked at 6.00 GHz (GDDR5-effective), translating into a staggering 384 GB/s memory bandwidth.

http://www.techpowerup.com/213588/am...90-series.html