Which r9 390x?
What Zackfoo said.
More Msi cards are consistently hitting 1200mhz. Probably helps that the boost clock is already 1100mhz. Which is the highest amongst all 390x, as high as the water cooled 390x from powercolor and higher than the Lightning/Vapor-X.
Even though the the 390x from Sapphire has a 8+8 pin power delivery. The overclocking result are not inline.
For overclocking:
Msi
XFX
Sapphire
PowerColor/Club 3D/Asus
Gigabyte
For Cooling:
Sapphire
PowerColor/Club 3D
Msi
XFX
Asus
Gigabyte
Thanks for that help!
Just one more question: are there waterblocks for that card? And if are they all compatible with the waterblock?
Reference cards have full cover waterblock available. (PowerColor PCS+, XFX (Only specific revs), Probably Club3D (since its just a rebaged PCS+ and Asus DCII)
Msi and Sapphire cards only have semi cover waterblocks.

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