290 to 390 bios mod for mining

[Charloz24]

Anyone did it? Does it help for mining ZEC or ETH?

TIA

[YIz]

Should not result in any improvement, A 390 is just a 290 bundled with 8GB of RAM.

[adaseb]

It made a different for ETH. But was more related to power consumption rather than speed. Bios was similar to Stilt actually.

Here is the thread with instructions

https://forum.ethereum.org/discussion/6866/got-any-290-x-reference-cards-read/p1

[Charloz24]

Should not result in any improvement, A 390 is just a 290 bundled with 8GB of RAM.

Do 390 mine ZEC near 300 sols/s? Because the max I have with 290 right now is 245 sols/s.

[adaseb]

Try 1100/1450 you should get 280Sol/s

[Charloz24]

Try 1100/1450 you should get 280Sol/s

Thanks I will try it, but Are you able to undervolt -100 mv with these settings?

[Tmdz]

Try 1100/1450 you should get 280Sol/s

Thanks I will try it, but Are you able to undervolt -100 mv with these settings?

No with a undervolt it should crash with a OC like that.

[QuintLeo]

Should not result in any improvement, A 390 is just a 290 bundled with 8GB of RAM.

 Not quite - the ram was also faster (1500 vs 1250 clock).
 I think the R9 390 also implimented the "boost clock" stuff in BIOS but not sure on that.

 I'm not sure if the R9 390 added PCI-E 3.0 compatability.