You're funny, because it's the same GPU except the VRAM amount.
Sorry but don't spread this lies. The GPU might not be a new entirely chip but its definitely got enough improvements to be considered a refresh.
http://www.pcper.com/reviews/Graphi...9-390-8GB-Review/3DMark-Power-and-Conclusions
" Before knowing what pricing AMD had decided on for these cards I assumed, as did most others, that the R9 390 would perform nearly identically to the R9 290.But that's not true, as the Sapphire Nitro R9 390 is anywhere from 10-15% faster than the XFX R9 290 DD and matches the performance of the ASUS R9 290X DirectCU II card at stock settings. Clearly the added clock speed and (more importantly) the increased memory clock speed have been able to juice up the Hawaii GPU, now called Grenada, to better compete with the NVIDIA GeForce lineup."
In the review R9 390 Nitro (1010 Mhz) is beating R9 290X DC2 (1050 Mhz) and drawing lesser power. So definitely I would recommend a R9 390 anyday over a R9 290X for double the VRAM, guaranteed higher stock performance and lower power. :thumbsup:
http://www.computerbase.de/2015-08/...karten-von-r7-360-bis-r9-390x-im-vergleich/2/
Look at the 1920 x 1080 high quality scores (hohe Qualität)
R9 390 at 1000 Mhz is faster than R9 290X OC at 1030 Mhz.
If you want to talk about memory overclocking on R9 290X that varies from card to card based on the AIB vendor and brand of memory chips used. So in conclusion the R9 390 8GB is the better,faster and more power efficient card over the R9 290X 4GB.
OP get the Sapphire R9 390 Nitro as it has the lowest temps/noise. the MSI R9 390 Gaming has slightly higher clocks and a custom PCB with backplate. But you could manually overclock to 1100 Mhz on any R9 390. But the cooling on Sapphire Nitro is definitely better.
http://www.eteknix.com/sapphire-nitro-r9-390-8gb-graphics-card-review/14/
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