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Modded R9 390X BIOS for R9 290/290X (Updated 02/16/2016) - Page 97

post #961 of 1860
Quote:
Originally Posted by mus1mus View Post

Can you point which or where to find the Voltage Limit set in the BIOS?

I have tested different BIOSes into my card and no other factory BIOS can give me more than 1.36Volts at load no matter how much I add thru software. thumb.gif

I cannot, unfortunately frown.gif It is strictly under NDA of a 3rd party. Also the limit is already so generous, that increasing it even further would start to stress the liabilities (warranty) of Gigabyte. If the allowed maximum voltage was substantially lower or blocked completely, I would increase it higher but never beyond the point they currently allow.

Also keep in mind that the actual voltage on the GPU is around 50mV higher than the software readings indicate.
post #962 of 1860
Aha. thumb.gif

Yep. Just pushing things biggrin.gif

I don't have a giga btw.
post #963 of 1860
Quote:
Originally Posted by mus1mus View Post

Uhmm.

And what is that again?

lachen.gif
You add +75 again. On the 3rd day, you add +100 again.

One day, the card will die. Next 3 days it will live again. tongue.gif

Serious now. The BIOS seemed too problematic for elpida. smile.gif

Okay so I have an MSI R9 290X Gaming 4G and I'm running on this BIOS http://www.techpowerup.com/vgabios/164968/msi-r9290x-4096-140701.html on Hybrid BIOS setting(default setting on MSI cards), and this card has Hynix memory, H5GQ2H24AFR to be more precise.I tried all your Hynix modded ROMs and I got black screen after trying to install the AMD Driver everytime.

I was wondering if you could inspect both the MSI 290x ROM I have and the MSI 390x ROM there is and maybe make a 390x ROM based on informations of both bioses from the cards, since I have a feeling MSI changed some things here and there and that's why I am getting black screen with your modded ROMs(I saw you took XFX 390x as base ROM, that's what I'm thinking is the fault in my case)>

I uploaded both ROMS over here, also MSI R9 390X Gaming 8G seems to have Hynix H5GC4H24AJR memory modules.
MSIR9290X390XROMS.zip 141k .zip file
post #964 of 1860
MSI 290X GAMING is not referenced card. Better mod your card BIOS though.
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post #965 of 1860
I understand.Well in that case can someone please bring the changes from the MSI 390X ROM and put them in the MSI 290X ROM I posted earlier?
post #966 of 1860
voltage limit can be prolly found with some effort but its not worth increased chance of destroing card wink.gif

what bothering me more is if there is some way to enable double precision nerf for my 290X as im developing some openCL apps for school and it would be nice to use my HW locked capatibility
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post #967 of 1860
Would someone be so kind as to mod 390x Hynix 1500 straps onto this bios for me? This is the only BIOS I've found that works well to unlock my 290 to 290x without issue. Please don't mod voltages or TDP or anything else as I am going to do that on my own. Thanks!!!


org.zip 99k .zip file
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post #968 of 1860
OK this is so weird. That bios I posted was working great for me and then suddenly started having issues with high memory clocks. I tried the 390/mod bios on the front page again and now that one is working perfectly and I was able to run my memory beyond what I normally could, with less core voltage. Doesn't that one have tighter timings? I'm just gonna leave good enough alone lol. It's a 290 and I'm afraid I'm gonna kill this thing lol. Also gonna figure out how to mount an enzotech mst-88 which has the perfect hole-hole distance, but they are offset. My vrm1 temps are ok with the gelid at +100mv but gets uncomfortably high in some games (Witcher 3 for instance) beyond that.
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post #969 of 1860
I have several doubts about this topic. I read dozens of pages from this post, but I need some help to understand the advantages of this bios mod. I own a Sapphire 290X 8Gb Tri-X new edition (6VRM) with high stock clocks (1020 / 1375) that can go 1130 / 1450 on stock voltage, and I am interested in modding it to a 390X 8Gb.

- This bios mod applies a new voltage & powerplay tables (with lower idle voltages) and some tweaks to memory (better latency & memory straps). What other mods are done to bios?
- Do memory straps improve overclockability of the memory? Can my Elpida memories go ahead 1500 with a new memory strap @1500Mhz with more relaxed timmings? (my bios only has 1375mhz strap on it)
- Increasing the vcore helps to overclock memories? (more stability for memory controller i supose). What is the default R9 390x load voltage?
- If I mod the card, a new voltage table is installed, and lower idle vcore is applied and higher vcore under load, right? (compared to a default 290X. My card runs at 1.25v under load @ 1130Mhz)
- To summarize, ¿what are the main improvements achieved with a bios flash? ¿Are new functionalities or optimizations enabled on drivers when flashing to a R390?

Sorry for this bunch of questions, but I am trying to understand this new card, and reading pages and pages doesn't help. Thanks in advance guys. This forum is amazing smile.gif

Regards,
Paco
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post #970 of 1860
Quote:
Originally Posted by FrAN_oC View Post

I have several doubts about this topic. I read dozens of pages from this post, but I need some help to understand the advantages of this bios mod. I own a Sapphire 290X 8Gb Tri-X new edition (6VRM) with high stock clocks (1020 / 1375) that can go 1130 / 1450 on stock voltage, and I am interested in modding it to a 390X 8Gb.

- This bios mod applies a new voltage & powerplay tables (with lower idle voltages) and some tweaks to memory (better latency & memory straps). What other mods are done to bios?
- Do memory straps improve overclockability of the memory? Can my Elpida memories go ahead 1500 with a new memory strap @1500Mhz with more relaxed timmings? (my bios only has 1375mhz strap on it)
- Increasing the vcore helps to overclock memories? (more stability for memory controller i supose). What is the default R9 390x load voltage?
- If I mod the card, a new voltage table is installed, and lower idle vcore is applied and higher vcore under load, right? (compared to a default 290X. My card runs at 1.25v under load @ 1130Mhz)
- To summarize, ¿what are the main improvements achieved with a bios flash? ¿Are new functionalities or optimizations enabled on drivers when flashing to a R390?

Sorry for this bunch of questions, but I am trying to understand this new card, and reading pages and pages doesn't help. Thanks in advance guys. This forum is amazing smile.gif

Regards,
Paco
  • The mods contained Stilt's modded memory timings for both Hynix & Elpida. The voltage mod have no effect though.
  • Whatever your highest memory overclock with stock BIOS. that is the max your card can do with modded BIOS. Modded BIOS with loosen memory timings probably can help your card gain ~25MHz max.
  • Yes, core voltage do help memory overclock. On some cards, +50mV AUX voltage help memory overclock too.
  • Load voltage is DPM7. If you want to add more voltage, this is the one you want to touch.
  • The modded BIOS with Stilt's tighter memory timings can improved the performance at the same clock.
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Overclock.net › Forums › Graphics Cards › AMD/ATI › Modded R9 390X BIOS for R9 290/290X (Updated 02/16/2016)