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Difficulty overclocking PCS+ R9 390x

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bob4933

Member
Joined
Jan 3, 2014
As mentioned, PCS+ R9 390x. Stock frequency is 1060mhz/1500mhz

Overclock -> I can get to 1120mhz/1600mhz on STOCK voltage. No added voltage, +20 power limit, no extra juice at all. Once I hit 1150, its almost like a voltage wall. +100mv in msi afterburner, and theres still artifacting. Powerlimit to 50, and still artifacting. Even downclocked the ram to 1400mhz, still no joy.

Swapped to "Trixx" for the +200mv, and it still doesn't work. Artifacting, crashes.

Is this "normal"? 1120/1600 vs 1150/1400 with +200mv just doesnt seem right. Any ideas?
 

ATMINSIDE

Sim Racing Aficionado Co-Owner
Joined
Jun 28, 2012
You'll get the same results as a 290X, look around and see what people were getting out of them.

The 390X is the same silicon as a 290X with more VRAM attached.
 

Nebulous

Señor Senior, Senior
Joined
Oct 11, 2002
Location
The Empire State
Hey bob you're not the only one. My PCS+ 390 can only go 1100/1700 max even with voltage/power limit. Anything beyond that and I get artifacts :-/ It does chew through games with max eye candy tho so that's a plus.

Mine is really a heater. Planning on putting it under water after my move.
 
OP
B

bob4933

Member
Joined
Jan 3, 2014
Hey bob you're not the only one. My PCS+ 390 can only go 1100/1700 max even with voltage/power limit. Anything beyond that and I get artifacts :-/ It does chew through games with max eye candy tho so that's a plus.

Mine is really a heater. Planning on putting it under water after my move.

It just struck me as strange. 1120 on stock voltage, no sweat. Any more and it just wont budge lol. Oh well, 1120 with no added voltage Im ok with at the end of the day.

That said, heat isn't an issue at all on mine. Benchmarking, gaming, doesnt matter, I have yet to break 65c. I've actually been quite impressed with the pcs+ cooler. Not as good as the accelero cooler, but damn close. Lot louder when it ramps up though... Good luck with yours!