Asrock 970 Extreme4, 4x R9 280X, 4x Powered Risers

Silvano

member

Activity: 98

Merit: 10

Quote from: nnay_th on January 05, 2014, 08:38:48 PM

Quote from: Silvano on January 05, 2014, 02:49:50 PM

Quote from: Silvano on January 05, 2014, 02:09:39 PM

sorry for noob question, guys

i'm looking to build a rig,
so i decided to buy:

MB asrock 970 extreme 4
cpu sempron 145
4gb ram g. skill dual channel 1333 mhz
5 sapphire R9 280x Toxic
2 PSU aerocool strike-x 1100w (1 for 3 cards and other for 2 cards and mobo)

i would to run this rig with linux, (bamt maybe) but i never use it, if anyone have some tips about this issue thanks in advance.

the question:

asrok 970 have 3 pci-e 16x slots and 2 pci-e 1x solts. i have to use all slots.
i found risers obviusly in china, and it seems products are good, but all risers are unpowered.

now, what difference in khash/s terms can be happened with non powered riser cable versus powered?
it is better to buy only powered? or non powered 16x and powered 1x?

why we need powered risers if cards are alredy powered directly by PSU?

tnx for reply

i solved my question by myself, and i post for other guys have same dubt.

graphic cards like R9 280x toxic, have two 8pin power bouts, and it supplies 150w each one.
the card, is tested at maxymum consumtion of about 370w but on 3d games and at max overclock, think for mining the consumption will be lowest, and 300w directly supplies by PSU are more than adeguate. so i think unpowered risers are good for this rig.

edit for info:
6 pin bouts, supplies 75w each
8 pin bouts, supplies 150w each
molex supplies 75w
PCI-E 16x slot supplies 75w
PCI-E 1x solt supplies 75w (not sure for that info, i'm trying to find better info).

Hi,

Wow, hold on a sec before you fry your motherboard! Even if you can get up to 300w via 8-pin, the graphics cards will still pull power from the PCIe slots.

From what I read, it is not recommended to use more that three unpowered risers. In your configuration, I would personally recommend at least 2 powered risers and three unpowered ones. But it doesn't hurt to have only powered ones.

Hope I saved you some trouble Grin

ty for advice

i'm going to order risers next tuesday, so, for make no mistake, better if i order powered risers.

nnay_th

newbie

Activity: 36

Merit: 0

Quote from: Silvano on January 05, 2014, 02:49:50 PM

Quote from: Silvano on January 05, 2014, 02:09:39 PM

sorry for noob question, guys

i'm looking to build a rig,
so i decided to buy:

MB asrock 970 extreme 4
cpu sempron 145
4gb ram g. skill dual channel 1333 mhz
5 sapphire R9 280x Toxic
2 PSU aerocool strike-x 1100w (1 for 3 cards and other for 2 cards and mobo)

i would to run this rig with linux, (bamt maybe) but i never use it, if anyone have some tips about this issue thanks in advance.

the question:

asrok 970 have 3 pci-e 16x slots and 2 pci-e 1x solts. i have to use all slots.
i found risers obviusly in china, and it seems products are good, but all risers are unpowered.

now, what difference in khash/s terms can be happened with non powered riser cable versus powered?
it is better to buy only powered? or non powered 16x and powered 1x?

why we need powered risers if cards are alredy powered directly by PSU?

tnx for reply

i solved my question by myself, and i post for other guys have same dubt.

graphic cards like R9 280x toxic, have two 8pin power bouts, and it supplies 150w each one.
the card, is tested at maxymum consumtion of about 370w but on 3d games and at max overclock, think for mining the consumption will be lowest, and 300w directly supplies by PSU are more than adeguate. so i think unpowered risers are good for this rig.

edit for info:
6 pin bouts, supplies 75w each
8 pin bouts, supplies 150w each
molex supplies 75w
PCI-E 16x slot supplies 75w
PCI-E 1x solt supplies 75w (not sure for that info, i'm trying to find better info).

Hi,

Wow, hold on a sec before you fry your motherboard! Even if you can get up to 300w via 8-pin, the graphics cards will still pull power from the PCIe slots.

From what I read, it is not recommended to use more that three unpowered risers. In your configuration, I would personally recommend at least 2 powered risers and three unpowered ones. But it doesn't hurt to have only powered ones.

Hope I saved you some trouble Grin

nnay_th

newbie

Activity: 36

Merit: 0

Quote from: BitWalker1 on January 05, 2014, 01:14:25 PM

Hi, does someone knows where I can find instructions to make powered risers out from not powered? (just by DIY

Here in Europe I had no luck to find a supplier for powered risers, only for normal (not powered) 1x and 16x.
But I guess it should not be too difficult to make a powered one out from a normal one...?

Cheers, BitWalker

Hi BitWalker,

Try this tutorial:

http://forum.feathercoin.com/index.php?topic=2193.0

Hope it helps.

Otherwise I live in UK and finding powered risers is relatively easy on eBay.

Cheers

Silvano

member

Activity: 98

Merit: 10

Quote from: Silvano on January 05, 2014, 02:09:39 PM

sorry for noob question, guys

i'm looking to build a rig,
so i decided to buy:

MB asrock 970 extreme 4
cpu sempron 145
4gb ram g. skill dual channel 1333 mhz
5 sapphire R9 280x Toxic
2 PSU aerocool strike-x 1100w (1 for 3 cards and other for 2 cards and mobo)

i would to run this rig with linux, (bamt maybe) but i never use it, if anyone have some tips about this issue thanks in advance.

the question:

asrok 970 have 3 pci-e 16x slots and 2 pci-e 1x solts. i have to use all slots.
i found risers obviusly in china, and it seems products are good, but all risers are unpowered.

now, what difference in khash/s terms can be happened with non powered riser cable versus powered?
it is better to buy only powered? or non powered 16x and powered 1x?

why we need powered risers if cards are alredy powered directly by PSU?

tnx for reply

i solved my question by myself, and i post for other guys have same dubt.

graphic cards like R9 280x toxic, have two 8pin power bouts, and it supplies 150w each one.
the card, is tested at maxymum consumtion of about 370w but on 3d games and at max overclock, think for mining the consumption will be lowest, and 300w directly supplies by PSU are more than adeguate. so i think unpowered risers are good for this rig.

edit for info:
6 pin bouts, supplies 75w each
8 pin bouts, supplies 150w each
molex supplies 75w
PCI-E 16x slot supplies 75w
PCI-E 1x solt supplies 75w (not sure for that info, i'm trying to find better info).

Silvano

member

Activity: 98

Merit: 10

sorry for noob question, guys

i'm looking to build a rig,
so i decided to buy:

MB asrock 970 extreme 4
cpu sempron 145
4gb ram g. skill dual channel 1333 mhz
5 sapphire R9 280x Toxic
2 PSU aerocool strike-x 1100w (1 for 3 cards and other for 2 cards and mobo)

i would to run this rig with linux, (bamt maybe) but i never use it, if anyone have some tips about this issue thanks in advance.

the question:

asrok 970 have 3 pci-e 16x slots and 2 pci-e 1x solts. i have to use all slots.
i found risers obviusly in china, and it seems products are good, but all risers are unpowered.

now, what difference in khash/s terms can be happened with non powered riser cable versus powered?
it is better to buy only powered? or non powered 16x and powered 1x?

why we need powered risers if cards are alredy powered directly by PSU?

tnx for reply

BitWalker1

newbie

Activity: 33

Merit: 0

Hi, does someone knows where I can find instructions to make powered risers out from not powered? (just by DIY

Here in Europe I had no luck to find a supplier for powered risers, only for normal (not powered) 1x and 16x.
But I guess it should not be too difficult to make a powered one out from a normal one...?

Cheers, BitWalker

nnay_th

newbie

Activity: 36

Merit: 0

So, I got an Asus M5A97 LE R2.0. The good news is that I can get two GPUs to work in the two PCIe 16x slots with 1x to 16x risers... And apparently, I also have two faulty risers as they do not seem to work in those slots...

The bad news is that I can't get the risers to work in the PCIe 1x slots... And I'll have to RMA the M5A97 as the first PCIe 1x is missing a pin...

Well, it's better but still bad luck... I also have a GPU to RMA as it generates a LOT of vibration...

Asus, Asus, what are you becoming?? Embarrassed

Thomza

newbie

Activity: 23

Merit: 0

no and i dont intend to...

nnay_th

newbie

Activity: 36

Merit: 0

Quote from: Thomza on January 02, 2014, 10:09:08 AM

I got them to work now. It turned out i had a few defected risers. All of my asrock boards now work with risers on pce1, pcie2, pcie3, pcie5. Don't know whats why it doesn't work on pcie4.

Great news! Have you tried shorting the PCIE4?

VariableDiff

newbie

Activity: 14

Merit: 0

I had ordered kind of good risers, but as i found it out lately, they were wrongly done, and i got burned my MB and risers.

kenshirothefist

sr. member

Activity: 457

Merit: 273

You should be very very careful with those powered x1-x16 risers ... These are no extra-quality cables, but merely quick&dirty china-hand-made cables. They requires very gentle handling - you shouldn't do any rolling or bending of the cables otherwise the cable and/or power connector might detach from the "extension slot". And one other thing to be very careful with x1-x16 risers -> if you are putting them into x16 slot you can easily insert it in the wrong direction - in this case it will burn the riser and if you are unlucky it might even burn the PCIe slot or the GPU. So, careful when using those risers!

Thomza

newbie

Activity: 23

Merit: 0

I got them to work now. It turned out i had a few defected risers. All of my asrock boards now work with risers on pce1, pcie2, pcie3, pcie5. Don't know whats why it doesn't work on pcie4.

nnay_th

newbie

Activity: 36

Merit: 0

Just ordered my ASUS M5A97 LE, I'll let you know.

I keep my fingers crossed

Thomza

newbie

Activity: 23

Merit: 0

All powered x1-x16 risers on r9 290s

nnay_th

newbie

Activity: 36

Merit: 0

Quote from: Thomza on January 01, 2014, 03:05:00 PM

I can get 2 on risers at most. One in the first x16 slot and one in last x1 slot and one directly on the board. Didnt yet try all the combinations but at least im running 3 of them for now. I can run 4 gpus on ASUS M5A97 R2.0 without any problems.

Good to know for the ASUS M5A97 R2.0! Are all your 4 gpus on powered riser on this one? If so, are they 1x to 16x risers or 16x to 16x?

Thanks mate! Grin

Thomza

newbie

Activity: 23

Merit: 0

I can get 2 on risers at most. One in the first x16 slot and one in last x1 slot and one directly on the board. Didnt yet try all the combinations but at least im running 3 of them for now. I can run 4 gpus on ASUS M5A97 R2.0 without any problems.

nnay_th

newbie

Activity: 36

Merit: 0

Quote from: Thomza on January 01, 2014, 02:30:34 PM

I have the same problem. I have 5 of these boards and on all of them i cant get 4 gpus to work on x1-x16 powered risers.

hi Thomza,

were you able to run at least one GPU with a powered riser?

I have talked to my PCIE riser supplier (a really great guy), he told me that he always has problems with this particular mobo and powered risers.

I'm considering getting another motherboard, but I need to make more research. I want to find the sweet mobo that will take 4 GPUs on powered risers no question asked.

Thomza

newbie

Activity: 23

Merit: 0

I have the same problem. I have 5 of these boards and on all of them i cant get 4 gpus to work on x1-x16 powered risers.

nnay_th

newbie

Activity: 36

Merit: 0

Quote from: dminer69 on January 01, 2014, 08:57:53 AM

i had some what the some problem with my first rig evga x58 ftw3, i had to get 16x riser on the 3 pci e and one power 4 pin on my four card and i wouldnt get 100% on my 3rd and 4th card, so i ratter keep my rigs at 3 cards.

you could always get your self some use parts on ebay to run an extra card or 2 , did it my self got my self a dual pci e board for 50 bucks on ebay
and i was able to run 3 cards on it.

well that would really be the last thing I would do, since I know people are successfully using 5 GPUs on an Asrock 970 Ex4, but I'm starting considering it at least temporary, just the time it takes to solve this matter as I don't like having an extra GPU sitting there idling.

Quote from: Peilo123 on January 01, 2014, 09:22:04 AM

Quote from: nnay_th on January 01, 2014, 08:20:30 AM

Quote from: suzanneg on January 01, 2014, 12:43:29 AM

Hi nnay_th,

Have you been to this site: http://www.cryptobadger.com/2013/04/build-a-litecoin-mining-rig-windows/.
I been looking forward to build the same rig, hope this site can help. Happy new year.

Hi suzanneg,

This is exactly where I got my info about building a rig! Best tutorial I could find so far! Grin

The difference is that I intend to use 4 GPUs with 4 powered PCIe 1x to 16x risers.

Quote from: cryptoprime on January 01, 2014, 01:13:27 AM

You might need pin shorting: https://bitcointalksearch.org/topic/list-of-motherboard-that-require-shorting-pin-a1-b17-for-pci-e-1x-to-work-36061

Hi cryptoprime,

Yes I'm considering doing this, but I can't find info from owners of the same mobo.

Do you know if I can safely short a PCI x16 slot? I found infos about shorting a 1x slot, but nothing about the 16x slots.

Also I read stories from people frying their mobo shortly after shorting their PCIe ports... simply horrifying.. Shocked

Quote from: justkid on January 01, 2014, 04:46:37 AM

What psu are you using?

Hi justkid,

I have two Akasa Cobra 850w running on the same rig, which are intended to power two GPUs each. With a total of 1700w, I think that might not be the issue.

Maybe one of powered riser's is damaged?
I dont know for sure, but a PCI x1 slot just got about 500Mb/s in each direction and my solo mining gpu produces a heavy amount of traffic. when start copying files between 2 harddrive's while mining, i just got half the i normally got.
So maybe a PCI 2.0 1x slot hasn't enough bandwith to fuel a HD7970/R280X Huh

Well I have 5 PCI risers, and I tried to use only one at a time while the three other GPUs are connected directly to the mobo. The ones on the mobo are detected, but not the one on the riser. I tried each riser, unsuccessfully.

I even tried to short the presence pins, but no change...

Peilo123

newbie

Activity: 1

Merit: 0

Quote from: nnay_th on January 01, 2014, 08:20:30 AM

Quote from: suzanneg on January 01, 2014, 12:43:29 AM

Hi nnay_th,

Have you been to this site: http://www.cryptobadger.com/2013/04/build-a-litecoin-mining-rig-windows/.
I been looking forward to build the same rig, hope this site can help. Happy new year.

Hi suzanneg,

This is exactly where I got my info about building a rig! Best tutorial I could find so far! Grin

The difference is that I intend to use 4 GPUs with 4 powered PCIe 1x to 16x risers.

Quote from: cryptoprime on January 01, 2014, 01:13:27 AM

You might need pin shorting: https://bitcointalksearch.org/topic/list-of-motherboard-that-require-shorting-pin-a1-b17-for-pci-e-1x-to-work-36061

Hi cryptoprime,

Yes I'm considering doing this, but I can't find info from owners of the same mobo.

Do you know if I can safely short a PCI x16 slot? I found infos about shorting a 1x slot, but nothing about the 16x slots.

Also I read stories from people frying their mobo shortly after shorting their PCIe ports... simply horrifying.. Shocked

Quote from: justkid on January 01, 2014, 04:46:37 AM

What psu are you using?

Hi justkid,

I have two Akasa Cobra 850w running on the same rig, which are intended to power two GPUs each. With a total of 1700w, I think that might not be the issue.

Maybe one of powered riser's is damaged?
I dont know for sure, but a PCI x1 slot just got about 500Mb/s in each direction and my solo mining gpu produces a heavy amount of traffic. when start copying files between 2 harddrive's while mining, i just got half the i normally got.
So maybe a PCI 2.0 1x slot hasn't enough bandwith to fuel a HD7970/R280X Huh

Topic: Asrock 970 Extreme4, 4x R9 280X, 4x Powered Risers (Read 6039 times)