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Hawaii Bios Editing ( 290 / 290X / 295X2 / 390 / 390X ) - Page 279

post #2781 of 4008
Quote:
Originally Posted by OneB1t View Post

monitor your frequency under load with msi afterburner
if drops under 1200mhz then you hitting power limit or cpu limit wink.gif

if the clock is stable and my results in bech are still....bad what could i do to get the full performence out of my card?
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post #2782 of 4008
you get little better performance with 390X timings and messing with tesellation factor in drivers
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post #2783 of 4008
Quote:
Originally Posted by sugarhell View Post

The GCN is not limited to 16 ROPs per shader engine?

Not sure about GCN 3.
Even if it was, it would have been wiser to only have the cores you can fully utilize with the ROPs present in the core. Fiji is not able to do full DPFP rate anyway, so it cannot be justified with computing purposes / professional segment cards either.
Edited by The Stilt - 6/3/16 at 2:36am
post #2784 of 4008
Quote:
Originally Posted by Streetdragon View Post

300mhz core and 150mhz mem is stock. so it is ok^^

little question: i have with 1200/1600 oc (temps are ok. GPU 52 vrm1 80 vrm2 66) +150mv offset. I only get 13979points in firestrike with every setting on stock and only 1 card aktive. Could it be, that the TDP is breaking me out?

Is your card modded with 390 bios?


This is what I get with 1150/1485 clocks with 390bios and 1250strap tweak

http://www.3dmark.com/fs/8591492

14150 graphics score (no driver tweaks)
post #2785 of 4008
Quote:
Originally Posted by spyshagg View Post

Is your card modded with 390 bios?


This is what I get with 1150/1480 clocks with 390bios and 1250strap tweak

http://www.3dmark.com/fs/8591492

14150 graphics score (no driver tweaks)

its a r9 390 nitro. I dont wanna play with the timings, because i didnt understood how to do it sofar that is a nice bench
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post #2786 of 4008
Some people here could do it if you asked smile.gif its just copy pasting a string of values
post #2787 of 4008
Quote:
Originally Posted by The Stilt View Post

Not sure about GCN 3.
Even if it was, it would have been wiser to only have the cores you can fully utilize with the ROPs present in the core. Fiji is not able to do full DPFP rate anyway, so it cannot be justified with computing purposes / professional segment cards either.

IIRC from different papers and information around the web the GCN basic structure(Even on GCN3 the basic structure is quite similar to GCN1) is limited to 4 shader engines. And if each shader engine is limited to 16 ROPs then they would have to redesign the whole architecture ( I am still waiting for more polaris info ).

From my tests even if you use a simple pixel shader with a 32-bit texture the 7970 is ROP limited instead of b/w. I imagine the 64 ROPs on the Fiji should be a major bottleneck to pixel shaders and in general pixel output.

You would have to change all your pixel shaders to compute shaders to be competitive in gaming. (kinda impossible)
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post #2788 of 4008
ok

if someone have time:
Can you mod the mem-timings on this bios? the 1250strap on 1250+frequencies? 390_new.zip 101k .zip file `
That is the modded nbios from me so far, just without the memory overclock thumb.gif
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post #2789 of 4008
390_new_mod.zip 100k .zip file

Give it a try on your backup bios switch position in case it goes wrong


cheers
post #2790 of 4008
Hey guys this is my first post on this forum altough I have read quite a few posts already and it helped me in a great deal of questions and situations. So please don't scold me if I'm a bit of a noobie here. smile.gif

Now recently I got a Sapphire R9 290 Vapor-X card and I am wondering if anyone had any luck in flashing 390 bios on his R9 290 Vapor-X?
I also tought that with the new R9 390 Toxic with the same PCB design, maybe that one's BIOS would be working on these cards.

Any thoughts or experiences with this?
I appreciate the aanswere in advance! smile.gif
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