Hacked Modified Memory Strap BIOS Database for ZEC MINING!

[jstefanop]

The timings stilt has posted are as tight as they can pretty much get for 200 based cards. Im more involved with 300/400 based cards. Either way the gains you'll get from copying lower memory straps into higher clocked straps will get you most of the way there. Any individual timing tweaks I would do would just increase stability and maybe get a few % extra hashrate.

[AmDD]

I tried the 7950 bios on 3 of my Gigabyte cards, one saw a nice improvement, up to 90+ h/s but it fails after a few minutes. The other two only hash for about a minute before crashing. Even adjusting the clocks up/down made no real difference.

Nice find though, good information!! 

You sure you had the Hynix memory? The most I can get with my Gigabyte 7950 is 130 Sols because it crashes with any memory clock higher than 1500. I think I run it at 1000/1400.

Pretty sure. I run ethos (linux) so GPUz doesnt do me any good. Ethos reports it as Hynix. Its not the exact model you list, its a Gigabyte Twin Frozr II but I thought Id give it a try anyway. I also planned to try the same bios on my reference Sapphire 7950's but have not made it that far yet.

I think I even went as far as to drop the clocks to 1000/1250 and it still crashed.

[adaseb]

I tried the 7950 bios on 3 of my Gigabyte cards, one saw a nice improvement, up to 90+ h/s but it fails after a few minutes. The other two only hash for about a minute before crashing. Even adjusting the clocks up/down made no real difference.

Nice find though, good information!! 

You sure you had the Hynix memory? The most I can get with my Gigabyte 7950 is 130 Sols because it crashes with any memory clock higher than 1500. I think I run it at 1000/1400.

Pretty sure. I run ethos (linux) so GPUz doesnt do me any good. Ethos reports it as Hynix. Its not the exact model you list, its a Gigabyte Twin Frozr II but I thought Id give it a try anyway. I also planned to try the same bios on my reference Sapphire 7950's but have not made it that far yet.

I think I even went as far as to drop the clocks to 1000/1250 and it still crashed.

Twin Frozr II is usually MSI, not Gigabyte. Maybe try the MSI 280X instead.

I posted a reference 7950 BIOS a few pages back, search for it and try it. Its for a 8950 technically but I think it worked for some other individual's 7950.

[adaseb]

The timings stilt has posted are as tight as they can pretty much get for 200 based cards. Im more involved with 300/400 based cards. Either way the gains you'll get from copying lower memory straps into higher clocked straps will get you most of the way there. Any individual timing tweaks I would do would just increase stability and maybe get a few % extra hashrate.

Alright thanks for your input. For some of my Pitcairn cards that pretty much what I was doing taking the lower straps and using on the higher clocks, basically what we all did for the RX480s.

[AmDD]

I tried the 7950 bios on 3 of my Gigabyte cards, one saw a nice improvement, up to 90+ h/s but it fails after a few minutes. The other two only hash for about a minute before crashing. Even adjusting the clocks up/down made no real difference.

Nice find though, good information!! 

You sure you had the Hynix memory? The most I can get with my Gigabyte 7950 is 130 Sols because it crashes with any memory clock higher than 1500. I think I run it at 1000/1400.

Pretty sure. I run ethos (linux) so GPUz doesnt do me any good. Ethos reports it as Hynix. Its not the exact model you list, its a Gigabyte Twin Frozr II but I thought Id give it a try anyway. I also planned to try the same bios on my reference Sapphire 7950's but have not made it that far yet.

I think I even went as far as to drop the clocks to 1000/1250 and it still crashed.

Twin Frozr II is usually MSI, not Gigabyte. Maybe try the MSI 280X instead.

I posted a reference 7950 BIOS a few pages back, search for it and try it. Its for a 8950 technically but I think it worked for some other individual's 7950.

Youre right. I dont know why I thought that. *idiot*

I'll try the MSI 280X as well as the reference 8950 and see how they perform. I'll report back later on.
thanks!

[A L I E N]

I posted a reference 7950 BIOS a few pages back, search for it and try it. Its for a 8950 technically but I think it worked for some other individual's 7950.

Yeah that's what I used with 987mv and -9 power limit and just 925/1250 to run at 125h/s with not much more wattage than stock.  You can push the core and memory higher and get a little more but it is almost not worth it imo. On a Sapphire though not MSI..

[adaseb]

I posted a reference 7950 BIOS a few pages back, search for it and try it. Its for a 8950 technically but I think it worked for some other individual's 7950.

Yeah that's what I used with 987mv and -9 power limit and just 925/1250 to run at 125h/s with not much more wattage than stock.  You can push the core and memory higher and get a little more but it is almost not worth it imo. On a Sapphire though not MSI..

I don't know technically what the difference is between the 8950 and 7950 but mine runs rock solid at 1100/1575, and peaks at 150 H/s.

However I got a few Gigabyte 7950 and those can only run at 1050/1400 since anything higher and its unstable, no idea why.

[gsxrboy]

Which bios i can  use for a Sapphire 7950 vapor x , i got two, and i checked GPU-z one of the rom's is Elpida the other one is Hynix, i've read the thread but still a bit confused , could someone point which bios i can use.

[nerdralph]

I don't know technically what the difference is between the 8950 and 7950 but mine runs rock solid at 1100/1575, and peaks at 150 H/s.

However I got a few Gigabyte 7950 and those can only run at 1050/1400 since anything higher and its unstable, no idea why.

RAM cooling can make a difference for overclocking.  For any new card purchases I look for the RAM to be cooled by the main heatsink, or at least a clear airflow path from the fans over the RAM.

[fenomenhaa]

Can anoyne help ? SAhhire dualx 7970 hynix AFR and 280X Dualx hynix.org bios
http://www.filedropper.com/sapphire7970afr
http://www.filedropper.com/sapphire280xhynix

[AmDD]

I tried the 7950 bios on 3 of my Gigabyte cards, one saw a nice improvement, up to 90+ h/s but it fails after a few minutes. The other two only hash for about a minute before crashing. Even adjusting the clocks up/down made no real difference.

Nice find though, good information!! 

You sure you had the Hynix memory? The most I can get with my Gigabyte 7950 is 130 Sols because it crashes with any memory clock higher than 1500. I think I run it at 1000/1400.

Pretty sure. I run ethos (linux) so GPUz doesnt do me any good. Ethos reports it as Hynix. Its not the exact model you list, its a Gigabyte Twin Frozr II but I thought Id give it a try anyway. I also planned to try the same bios on my reference Sapphire 7950's but have not made it that far yet.

I think I even went as far as to drop the clocks to 1000/1250 and it still crashed.

Twin Frozr II is usually MSI, not Gigabyte. Maybe try the MSI 280X instead.

I posted a reference 7950 BIOS a few pages back, search for it and try it. Its for a 8950 technically but I think it worked for some other individual's 7950.

Youre right. I dont know why I thought that. *idiot*

I'll try the MSI 280X as well as the reference 8950 and see how they perform. I'll report back later on.
thanks!

The MSI 280X bios seems to be working fine at 1000/1575 clocks pulling 82 h/s on silentarmy v5. Im sure Ill get more once its updated. I did notice that the voltage is 1.2v which is lower than stock (1.25v) but higher than I had it before. Back in the Scrypt mining days I had flashed a bios to thee cards which lowered the voltage to 0.9 or so, this dropped my over all wattage by about 50watts per card and didnt affect the hashrate at all.

I have not tried the 8950 bios yet, that I'll do this evening.

[A L I E N]

Thanks for this info.  I was able to get +30% out of some reference 7950s with the rom posted a few pages back.  I've got this 7970 ghz laying around, is there something you'd recommend for it?
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150632

What memory does it have? Some guy sent me a XFX 280X bios and I couldn't mod it because it had HYNIX BFR memory. I can only do AFR and MFR.

Yeah its Hynix AFR

Heres the stock rom if your're bored ha:  http://s000.tinyupload.com/index.php?file_id=05011924438882271719

Alright ill do it sometime tomorrow, too tired right now.

Did you get a chance to look at this or do you think the Gigabyte 7970 rom might be ok this XFX?

[_javi_]

Which bios i can  use for a Sapphire 7950 vapor x , i got two, and i checked GPU-z one of the rom's is Elpida the other one is Hynix, i've read the thread but still a bit confused , could someone point which bios i can use.

same here, Sapp 7950 Vaporx (hynix afr).. dunno what bios to use.. was it posted and i missed it?

[adaseb]

Thanks for this info.  I was able to get +30% out of some reference 7950s with the rom posted a few pages back.  I've got this 7970 ghz laying around, is there something you'd recommend for it?
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150632

What memory does it have? Some guy sent me a XFX 280X bios and I couldn't mod it because it had HYNIX BFR memory. I can only do AFR and MFR.

Yeah its Hynix AFR

Heres the stock rom if your're bored ha:  http://s000.tinyupload.com/index.php?file_id=05011924438882271719

Alright ill do it sometime tomorrow, too tired right now.

Did you get a chance to look at this or do you think the Gigabyte 7970 rom might be ok this XFX?

I haven't forgotten about you, just been crazy busy the last few days. I will get around too it when I got some free time. Unless someone else mods it for you.

[AmDD]

I tried the 7950 bios on 3 of my Gigabyte cards, one saw a nice improvement, up to 90+ h/s but it fails after a few minutes. The other two only hash for about a minute before crashing. Even adjusting the clocks up/down made no real difference.

Nice find though, good information!! 

You sure you had the Hynix memory? The most I can get with my Gigabyte 7950 is 130 Sols because it crashes with any memory clock higher than 1500. I think I run it at 1000/1400.

Pretty sure. I run ethos (linux) so GPUz doesnt do me any good. Ethos reports it as Hynix. Its not the exact model you list, its a Gigabyte Twin Frozr II but I thought Id give it a try anyway. I also planned to try the same bios on my reference Sapphire 7950's but have not made it that far yet.

I think I even went as far as to drop the clocks to 1000/1250 and it still crashed.

Twin Frozr II is usually MSI, not Gigabyte. Maybe try the MSI 280X instead.

I posted a reference 7950 BIOS a few pages back, search for it and try it. Its for a 8950 technically but I think it worked for some other individual's 7950.

Youre right. I dont know why I thought that. *idiot*

I'll try the MSI 280X as well as the reference 8950 and see how they perform. I'll report back later on.
thanks!

The MSI 280X bios seems to be working fine at 1000/1575 clocks pulling 82 h/s on silentarmy v5. Im sure Ill get more once its updated. I did notice that the voltage is 1.2v which is lower than stock (1.25v) but higher than I had it before. Back in the Scrypt mining days I had flashed a bios to thee cards which lowered the voltage to 0.9 or so, this dropped my over all wattage by about 50watts per card and didnt affect the hashrate at all.

I have not tried the 8950 bios yet, that I'll do this evening.

And the 8950 bios works as well, thanks!

[JuanHungLo]

Can anoyne help ? SAhhire dualx 7970 hynix AFR and 280X Dualx hynix.org bios
http://www.filedropper.com/sapphire7970afr
http://www.filedropper.com/sapphire280xhynix

Try this:

http://www.filedropper.com/tahitimd1

this is modded from a Sapphire HD 7970 3G OC w boost, Hynix AFR.  It should actually work on your 280x as well.

[fenomenhaa]

@juanhunglo thanks for bios, boost 125 to 145h/s thx. so much.

[adaseb]

With Claymore V7 some of my GPUs have slowed with the modified bios's, some are faster, some are faster being stock.

Best is the reference R9 290 running at 230 h/s.

Anyone else can report.

[reb0rn21]

With Claymore V7 some of my GPUs have slowed with the modified bios's, some are faster, some are faster being stock.

Best is the reference R9 290 running at 230 h/s.

Anyone else can report.

Yeah now for full speed you need more GPU power at least on 280x

1000mhz -> 163
1100 -> 180
1200Mhz -> near 200

Also looks like it more now about memory clock and bandwith then about latency

[oslak]

my 280x rigs are crashing but hashes @ 175 then full stop. Stable at v6 but v7 seem to use more power.