I was trying to flash this rom vdrop+.rom but the system crashed almost every time I start claymore miner - with device driver stopped. Sometimes it works few minutes/hours with 1 or 2 gpus out of 4 gpus then crashes again with same error - device driver stopped.
The system has: - motherboard asrock h97 anniversary - 4x Sapphire RX 480 Nitro+ OC 8GB (11260-01-20G) - 4 powered risers x1 to x16
Maybe I am doing something wrong in the installation phase. Please can someone can correct me if the steps I followed are not ok: - install windows 10 pro 64 - check jumpers on video cards are on bios switch side - clean drivers with ddu - install crimson drivers 16.9.1 or 16.9.2 or 16.10.1 - reboot - check cards are ok in device driver - move jumpers on video card to silent mode - flash this rom vdrop+.rom - reboot - check cards are ok in device driver - use strixx to set fans at 40% or 50% - use strixx to lower gpu voltage to -100mv or -80 or -70; lately I also lowered memclock to 2060, 2050, 2055 - start claymore 7.1 or 7.2beta - some device drivers stopped claymore restart, everything freezes
Try without these steps : - use strixx to set fans at 40% or 50% - use strixx to lower gpu voltage to -100mv or -80 or -70; lately I also lowered memclock to 2060, 2050, 2055
Also freezes are from undervoltage. On all my sapphire the best voltage are 0.8812-0900. Average consumption on wall with dual mining ~1000W, ~194Mh/s EHT + 2600 SIA, 6 gpu.
As I said before, to squeeze more MH - it needs an individual tuning for each card. Some cards are lucky, some - not. Some people have problems even with comparatively safe clock settings in my published ROM.
Each card need long testing to find stable strap and clock settings and all you can reach is 1.5 MH additionally. It's not worth it, as for me.
Here is my another ROM with 1150/2150 clock settings, that does 29.8 MH. It used on my most unlucky card, so there is a big chance (but no any warranty) that almost any card can run stable with it. Use it on your own risk.
If you VERY lucky, you can try to clock up to 1225/2300 MHz and reach 31.5-32 Mh with this ROM, but test it yourself.
@Jukebox you are a genius! This bios is rock! 184-188 Mh/s ETH (850-870W wall, 1225/2240, -75mv) or 179-180 Mhs Eth + 2600 SIA(1040-1060W).If you will came in Romania i will take you to the best restaurant in town!:)
If you will came in Romania i will take you to the best restaurant in town!:)
I'm not so far away. I'm from Ukraine.
Anyway, I'm very careful to post my modifications, because I'm responsible to any thing that I spread to community. So - some sings I can share safely. And other things - just with a lot of warnings.
I do not know if it can be useful but I found this video on youtube that explains how to make the bios mod on your own and reach, with a few modifications, 30/31 mh/s
hi to all, thank you JUKEBOX could anyone please reply my request??? is it possible to flash (with the rom that is available on this topic) a Sapphire rx 480 4gb without to brick the card?
p.s. the 4 gb version is a locked 8 gb version?!? isn´t it?
hi to all, thank you JUKEBOX could anyone please reply my request??? is it possible to flash (with the rom that is available on this topic) a Sapphire rx 480 4gb without to brick the card?
p.s. the 4 gb version is a locked 8 gb version?!? isn´t it?
Wrong. 8 GB cards are based on Samsung memchips. 4 GB cards are based on Hynix or Elpida memory. Didn't saw 4 GB cards with Samsung memory yet. ROMs are totally different.
With this rom, I've got 30 Mh + 375 sia @ default settings in wattman : gpu @1125 memory @2150. When I change the memory @2200 I've got only 25 Mh and @2240 only 20. Why ?
With this rom, I've got 30 Mh + 375 sia @ default settings in wattman : gpu @1125 memory @2150. When I change the memory @2200 I've got only 25 Mh and @2240 only 20. Why ?
Because after some clock limit memory becomes unstable and generates huge amount of errors. This limit can be found with GPU-Z - just check memory controller load. If it less than 100% - you OC'ed too much.
But even if you find memclock stable to memory controller load - it does not mean that your card now stable on mining. You can still have unpredecent hangs, reboot or clock reset issues and need to downclock even more.
As I said before, to squeeze more MH - it needs an individual tuning for each card. Some cards are lucky, some - not. Some people have problems even with comparatively safe clock settings in my published ROM.
Each card need long testing to find stable strap and clock settings and all you can reach is 1.5 MH additionally. It's not worth it, as for me.
Here is my another ROM with 1150/2150 clock settings, that does 29.8 MH. It used on my most unlucky card, so there is a big chance (but no any warranty) that almost any card can run stable with it. Use it on your own risk.
If you VERY lucky, you can try to clock up to 1225/2300 MHz and reach 31.5-32 Mh with this ROM, but test it yourself.
As I said before, to squeeze more MH - it needs an individual tuning for each card. Some cards are lucky, some - not. Some people have problems even with comparatively safe clock settings in my published ROM.
Each card need long testing to find stable strap and clock settings and all you can reach is 1.5 MH additionally. It's not worth it, as for me.
Here is my another ROM with 1150/2150 clock settings, that does 29.8 MH. It used on my most unlucky card, so there is a big chance (but no any warranty) that almost any card can run stable with it. Use it on your own risk.
If you VERY lucky, you can try to clock up to 1225/2300 MHz and reach 31.5-32 Mh with this ROM, but test it yourself.
The only difference between the 2 are the MHz boost engine clocks and price. Would it be just better to grab lower version one and save on cost of card or the first revision better as already overclocked from stock? or this them just turning the clocks up more and making stable run thus costing more?
The only difference between the 2 are the MHz boost engine clocks and price. Would it be just better to grab lower version one and save on cost of card or the first revision better as already overclocked from stock? or this them just turning the clocks up more and making stable run thus costing more?
I went for the faster one.. The difference in price was so minimal that it didn't make much sense..
Comments
-20 MHz can fix the problem.
or can i try Boysie's RX480 (REF) BIOS or another bios?
99 % that you brick your card.
So this card is not very lucky, dovnclock memory little bit more till you find stable clock settings
I was trying to flash this rom vdrop+.rom but the system crashed almost every time I start claymore miner - with device driver stopped. Sometimes it works few minutes/hours with 1 or 2 gpus out of 4 gpus then crashes again with same error - device driver stopped.
The system has:
- motherboard asrock h97 anniversary
- 4x Sapphire RX 480 Nitro+ OC 8GB (11260-01-20G)
- 4 powered risers x1 to x16
Maybe I am doing something wrong in the installation phase. Please can someone can correct me if the steps I followed are not ok:
- install windows 10 pro 64
- check jumpers on video cards are on bios switch side
- clean drivers with ddu
- install crimson drivers 16.9.1 or 16.9.2 or 16.10.1
- reboot
- check cards are ok in device driver
- move jumpers on video card to silent mode
- flash this rom vdrop+.rom
- reboot
- check cards are ok in device driver
- use strixx to set fans at 40% or 50%
- use strixx to lower gpu voltage to -100mv or -80 or -70; lately I also lowered memclock to 2060, 2050, 2055
- start claymore 7.1 or 7.2beta
- some device drivers stopped claymore restart, everything freezes
Thanks
- use strixx to set fans at 40% or 50%
- use strixx to lower gpu voltage to -100mv or -80 or -70; lately I also lowered memclock to 2060, 2050, 2055
Post results here.
- reinstalled drivers crimson 16.10.1
- ran claymore 7.2beta without voltage drop
- again 1 gpu was working, one failed and 2 showed 0 mhs
- crash
screenshots:
Also add in .bat file:
setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100
Also freezes are from undervoltage. On all my sapphire the best voltage are 0.8812-0900. Average consumption on wall with dual mining ~1000W, ~194Mh/s EHT + 2600 SIA, 6 gpu.
Also do not forget to increase pagefile to at least 8 GB or 16 GB if possible. Claymore sometimes needs it.
Rom? Core and mem clock ?
thank you for your help
A.
Each card need long testing to find stable strap and clock settings and all you can reach is 1.5 MH additionally. It's not worth it, as for me.
Here is my another ROM with 1150/2150 clock settings, that does 29.8 MH. It used on my most unlucky card, so there is a big chance (but no any warranty) that almost any card can run stable with it. Use it on your own risk.
If you VERY lucky, you can try to clock up to 1225/2300 MHz and reach 31.5-32 Mh with this ROM, but test it yourself.
I'm from Ukraine.
Anyway, I'm very careful to post my modifications, because I'm responsible to any thing that I spread to community. So - some sings I can share safely. And other things - just with a lot of warnings.
I do not know if it can be useful but I found this video on youtube that explains how to make the bios mod on your own and reach, with a few modifications, 30/31 mh/s
this is the link : https://youtube.com/watch?v=Mwb67g4skGM
A.
could anyone please reply my request???
is it possible to flash (with the rom that is available on this topic) a Sapphire rx 480 4gb without to brick the card?
p.s. the 4 gb version is a locked 8 gb version?!? isn´t it?
4 GB cards are based on Hynix or Elpida memory.
Didn't saw 4 GB cards with Samsung memory yet.
ROMs are totally different.
Base GPU voltage set to 900 mV for 300 MHz
But even if you find memclock stable to memory controller load - it does not mean that your card now stable on mining. You can still have unpredecent hangs, reboot or clock reset issues and need to downclock even more.
My best card can run 2225 memclk max.
I see 2 revisions of this card
11260-01
2304 Stream Processors
14 nm FinFET
4th Graphics Core Next (GCN)
1208 MHz Engine Clock
1342 MHz Boost Engine Clock
11260-07
2304 Stream Processors
14 nm FinFET
4th Graphics Core Next (GCN)
1208 MHz Engine Clock
1306 MHz Boost Engine Clock
The only difference between the 2 are the MHz boost engine clocks and price. Would it be just better to grab lower version one and save on cost of card or the first revision better as already overclocked from stock? or this them just turning the clocks up more and making stable run thus costing more?
This is dual mining with 5 x RX480's!
ETH - Total Speed: 146.705 Mh/s, Total Shares: 875, Rejected: 0, Time: 08:29
ETH: GPU0 29.538 Mh/s, GPU1 29.501 Mh/s, GPU2 28.668 Mh/s, GPU3 29.506 Mh/s, GPU4 29.491 Mh/s
SC - Total Speed: 2200.567 Mh/s, Total Shares: 1308, Rejected: 0
SC: GPU0 443.070 Mh/s, GPU1 442.510 Mh/s, GPU2 430.023 Mh/s, GPU3 442.592 Mh/s, GPU4 442.372 Mh/s
I'm not doing any manual undervolting or overclocking yet. That's just with @Jukebox's v4 bios.