# MSI Z170 7 GPU BIOS Setting step by step

**URL:** <https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473>\
**Category:** Mining\
**Created:** [February 28, 2017, 9:28am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473 "2017-02-28T09:28:32Z")\
**Posts on this page:** 20\
**Page:** 3

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**Author:** ![Ari](https://avatars.discourse-cdn.com/v4/letter/a/5f8ce5/32.png) [@Ari](https://forum.zcashcommunity.com/u/Ari)\
**Post date:** [June 25, 2017, 1:03am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/43 "2017-06-25T01:03:57Z")

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Tell me how could u get more than 4 gpu on msiz270 krait gaming

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**Author:** ![hitoryu2001](https://avatars.discourse-cdn.com/v4/letter/h/13edae/32.png) [@hitoryu2001](https://forum.zcashcommunity.com/u/hitoryu2001)\
**Post date:** [June 25, 2017, 1:19am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/44 "2017-06-25T01:19:44Z")

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I got 2 1600 psu  
Set up the bios  
Peg0 to gen 1  
Peg1 to gen 1  
Enable 4g

Run 2 r9 direct ribbon riser  
Run 1 r9 16x1 usb powered riser

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**Author:** ![waxin\_poetic](https://avatars.discourse-cdn.com/v4/letter/w/85e7bf/32.png) [@waxin\_poetic](https://forum.zcashcommunity.com/u/waxin_poetic)\
**Post date:** [June 25, 2017, 4:54am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/45 "2017-06-25T04:54:37Z")

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I’m having an issue with the same board and GPU combination @winks…I can’t get any of the GPU’s to show up without having them plugged directly into the board. They’re not under Device Manager; rather, they’re a generic System Device.

I updated the BIOS to the latest version 1.7, performed a clean installation of Windows 10 in UEFI, as well as followed the instructions above regarding 4G encoding and setting PEG0 and PEG1 to Gen1. I’ve also made sure that I am using HDMI and NOT the onboard Intel GPU.

After the clean install, I wanted to see if I could directly plug them in and Windows recognized two. I couldn’t get past two, even with the USB-powered risers. Any assistance would be greatly appreciated! I have been scouring the net for days without any progress…

MSI Z170A  
Intel i3-6100T processor @ 3.2GHz  
8GB Crucial DDR4  
6x PCI-E1X TO 16X USB Risers  
6x EVGA Nvidia GeForce 1070 GTX FTW GPU  
1500W Enermax MaxREVO PSU

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**Author:** ![wish](https://avatars.discourse-cdn.com/v4/letter/w/e274bd/32.png) [@wish](https://forum.zcashcommunity.com/u/wish)\
**Post date:** [June 25, 2017, 6:53am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/46 "2017-06-25T06:53:03Z")

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is an intel chepset driver installed? I had a similar problem, the cards were just accepted as generic pci communications device, the driver fixed that.

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**Author:** ![waxin\_poetic](https://avatars.discourse-cdn.com/v4/letter/w/85e7bf/32.png) [@waxin\_poetic](https://forum.zcashcommunity.com/u/waxin_poetic)\
**Post date:** [June 25, 2017, 1:45pm UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/47 "2017-06-25T13:45:15Z")

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@wish the onboard Intel Graphics 530 chipset was still installed, even though it did not show up in Display Drivers within Device manager. I used DDU to remove it. When I plugged in two more of my 1070 GTX GPUs, it still doesn’t show up in Device Manager. I’m at a loss as to what to do next. I do not mind starting my installation from scratch if I have a different set of instructions than what is found, i.e. clean Windows re-install, driver re-install, etc.

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**Author:** ![Ce1ska](https://avatars.discourse-cdn.com/v4/letter/c/35a633/32.png) [@Ce1ska](https://forum.zcashcommunity.com/u/Ce1ska)\
**Post date:** [June 25, 2017, 3:59pm UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/48 "2017-06-25T15:59:44Z")

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Which driver version are you using?

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**Author:** ![waxin\_poetic](https://avatars.discourse-cdn.com/v4/letter/w/85e7bf/32.png) [@waxin\_poetic](https://forum.zcashcommunity.com/u/waxin_poetic)\
**Post date:** [June 25, 2017, 4:17pm UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/49 "2017-06-25T16:17:20Z")

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I’m using the latest version from the Nvidia website…it starts with 382…I believe 382.59.

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**Author:** ![editplus](https://avatars.discourse-cdn.com/v4/letter/e/aca169/32.png) [@editplus](https://forum.zcashcommunity.com/u/editplus)\
**Post date:** [June 25, 2017, 4:38pm UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/50 "2017-06-25T16:38:48Z")

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Following the same procedure above.

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**Author:** ![Sil8nt](https://avatars.discourse-cdn.com/v4/letter/s/8baadc/32.png) [@Sil8nt](https://forum.zcashcommunity.com/u/Sil8nt)\
**Post date:** [June 26, 2017, 7:03am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/51 "2017-06-26T07:03:47Z")

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I have same basic setup… MSI Z170a Gaming M5… .1E0 bios… I have 4 RX 480s all working/hashing just fine… plug in the 5th, 6th, 7th one(s), and only 2 cards show working in device manager, and the device drivers show “This device is working properly”. No more than 3 others show, and those 3 are disabled and have error “Code 12: This device cannot find enough free resources that it can use. If you want to use this device, you will need to disable one of the other devices on this system”. Further research indicates that the system may be out of IRQ’s. I’ve fiddled with disabling every possible combination of things in the Z170A’s BIOS and ended up having to reset CMOS several times due to the blood curdling long triple beep. D-8\<

SO… My question is then, what combination of things has anyone else tried to get the elusive 4th GPU to work?

Also, someone came up with the plausible argument that the PCI bus has either 16 or 20 lanes… 4 lanes per card. Since we have several victories over the issue declared in this forum, is this person full of crap who said the number of cards is limited by lanes with the above math?

Also, I read above about the “Kaby lake” vs “Skylake” processor controversy as well… I have the Intel Core I3-7100 7th gen LGA1151, which I believe is Kaby Lake… does anyone have concrete proof that the NEWER Kaby lake is indeed limited in some way to the 4-GPU limit?

AND YET ANOTHER “ALSO”… I tried the BIOS settings for the “PCI Subsystem Settings”:  
PEG0 (all combinations tried)  
PEG1 (all combinations tried)  
PCI Latency Timer (mostly 32 PCI Bus… tried 64 and 128 a couple times)  
Above4G memory/Crypto Currency mining - enabled… (Same results as many above… I was only able to get the system to boot with this disabled)

… and that is all of the “Alsos” I have at this time. Any correct answers will make you a rock star.

Thanks!

-Sil8nt

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**Author:** ![Sil8nt](https://avatars.discourse-cdn.com/v4/letter/s/8baadc/32.png) [@Sil8nt](https://forum.zcashcommunity.com/u/Sil8nt)\
**Post date:** [June 26, 2017, 7:06am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/52 "2017-06-26T07:06:09Z")

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pfft… I meant elusive 5th+ GPUs in first question. sorry about the confusion.

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**Author:** ![acaciosc](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/acaciosc/32/4369_2.png) [@acaciosc](https://forum.zcashcommunity.com/u/acaciosc)\
**Post date:** [July 2, 2017, 11:34pm UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/53 "2017-07-02T23:34:56Z")

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Hi,

Whenever I enable “above 4g memory/crypto currency mode”, I face a BIOS crash (black screen or multiple artefacts), regardless of having the graphics cards plugged in the PCIe slots or not. I don’t know what else to do, therefore I’m able to pay 1 hundred dollars for anyone able to fix it. I need it fixed ASAP!

Some basic infos:  
Windows 10 64 bits, installed in MBR mode.  
MSI Gaming Pro Carbon Z170A  
Celeron G3900  
HyperX DDR4 2400 MHz (2x4GB)  
HDMI to VGA converter, passive.

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**Author:** ![TheBaldMiner](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/thebaldminer/32/5541_2.png) [@TheBaldMiner](https://forum.zcashcommunity.com/u/TheBaldMiner)\
**Post date:** [July 5, 2017, 9:26am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/54 "2017-07-05T09:26:44Z")

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[http://mining-hardware.weebly.com/blog/distinguish-gpu-good-or-bad-tuning-for-mining-more-efficient](http://mining-hardware.weebly.com/blog/distinguish-gpu-good-or-bad-tuning-for-mining-more-efficient)  
This link is broken

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**Author:** ![detroit](https://avatars.discourse-cdn.com/v4/letter/d/45deac/32.png) [@detroit](https://forum.zcashcommunity.com/u/detroit)\
**Post date:** [July 6, 2017, 7:05am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/55 "2017-07-06T07:05:02Z")

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also maybe old topic but i still didnt manage to get 7gpus working. 6 work no problem but whenever i plug in seventh i only see 4 gpu. Anyone else has this issue? Did you overcome it? How?

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**Author:** ![CitricAcid](https://avatars.discourse-cdn.com/v4/letter/c/cc9497/32.png) [@CitricAcid](https://forum.zcashcommunity.com/u/CitricAcid)\
**Post date:** [July 6, 2017, 7:19am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/56 "2017-07-06T07:19:24Z")

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What are your GPU’s and what do you have for a PSU

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**Author:** ![detroit](https://avatars.discourse-cdn.com/v4/letter/d/45deac/32.png) [@detroit](https://forum.zcashcommunity.com/u/detroit)\
**Post date:** [July 6, 2017, 7:24am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/57 "2017-07-06T07:24:42Z")

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i have two setups

first one is comprised of 7x asus strix rx 580 8gb oc  
the next one 2x rx470 4x rx580 nitro+ sapphire, plus one random (usually either gigabyte rx580 or msi)  
Same mother board, different cpus (one is i3, the other some celeron skylake). Both have same settings as per these details above. Gen1 etc…And both get 4 gpus visible only when connecting 7th.  
PSU’s are 1250 platinum from chieftec and 1200AX from corsair (widely regarded as best afaik)

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**Author:** ![CitricAcid](https://avatars.discourse-cdn.com/v4/letter/c/cc9497/32.png) [@CitricAcid](https://forum.zcashcommunity.com/u/CitricAcid)\
**Post date:** [July 6, 2017, 7:35am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/58 "2017-07-06T07:35:19Z")

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If six (6) gpu’s run fine and the seventh (7) fails:

Its either a (bio’s) resource issue or since seven RX580 = 980w + mobo, cpu, fans = around 1100w ish… you may have a power issue especially if you are overclocking

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**Author:** ![detroit](https://avatars.discourse-cdn.com/v4/letter/d/45deac/32.png) [@detroit](https://forum.zcashcommunity.com/u/detroit)\
**Post date:** [July 6, 2017, 7:38am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/59 "2017-07-06T07:38:50Z")

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i can try on 1600w ax np or two PSU im getting quite few 860Ax so i can use two. But i really doubt its overclock/underpower thing my consumption is like 950 atm with 7th it would be like 1100. I ran ax 1200 at 1280 (dual mining really does mess up :))

Acid what bios’ resource should i set? idid set exactly same as per these instruction

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**Author:** ![detroit](https://avatars.discourse-cdn.com/v4/letter/d/45deac/32.png) [@detroit](https://forum.zcashcommunity.com/u/detroit)\
**Post date:** [July 6, 2017, 8:04am UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/60 "2017-07-06T08:04:23Z")

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p.s. @CitricAcid the issue arrises at log in in windows. Then the power consumption is like 100W since mining isnt on yet

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**Author:** ![CitricAcid](https://avatars.discourse-cdn.com/v4/letter/c/cc9497/32.png) [@CitricAcid](https://forum.zcashcommunity.com/u/CitricAcid)\
**Post date:** [July 6, 2017, 1:05pm UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/61 "2017-07-06T13:05:03Z")

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> [@detroit](#):
>
> Acid what bios’ resource should i set? i did set exactly same as per these instruction

If this is happening as soon as you start windows then I go back to resource issues on the motherboard. Have you turned off/disabled everything you do not need (onboard video/sound/onboard wifi)?

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**Author:** ![detroit](https://avatars.discourse-cdn.com/v4/letter/d/45deac/32.png) [@detroit](https://forum.zcashcommunity.com/u/detroit)\
**Post date:** [July 6, 2017, 1:05pm UTC](https://forum.zcashcommunity.com/t/msi-z170-7-gpu-bios-setting-step-by-step/14473/62 "2017-07-06T13:05:55Z")

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i just followed the instructions is there anything else i should be doing?

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