AFAIK, the molex connector to the motherboard is only used for grounding, in particular for the audio. You will find it even on some mATX boards with no PCIe slots. I say that because I once had such a board, and thats what the manual said, that the molex connector helped reduce audio static.
Well that may be perfectly true but in my mobo manual which has this connector ( two of them in fact ) it is specifically used to provide additional power to the PCIe slots when using triple or quad SLI / Crossfire configurations etc. |
|
|
|
The problem comes from manufactures no following the specs. A 20 pin mobo connecter should be able to supply 75w total to all the PCIe slots, 24 pin is 150w total. Reference GPU cards are designed to pull no more than 25w from the PCIe slot.
What  I thought they pulled 75W from the slot. They aren't "supposed" to. But some do. And one reason why you get burned up mobo connections. Most common cause is a loose connection though. That causes a reduction in the cross section available to the current, causing overheating, and in worst case senarios, arcing, sparking, and fires.  Legacy PCI slots were designed for a limit of 25 watts per slot, but PCI Express is designed for 75 watts per slot. Cheap motherboards can and will burn dramatically when each of 4 or more slots is pulling 75 watts, however a good, well designed motherboard will not. The better designs have the additional 6-or-8 pin connectors near the slots in addition to the main ATX connector. Correct, I was mistaken. That tends to happen after working 90+ hours in a week. Sorry, my brain is fried. However, I still wouldn't try to pull 300W through 4 PCIe slots with just the ATX mobo connector. Yeah so on those that have that additional power connector on board is it safe to use no powered extenders with say, 4 * 5970s ? |
|
|
|
|
OK. So AFAIK there are 5 kernel settings we have to adjust here :
BFI_INT ( where can I see if this is on / off ? )
Fastloop ( where can I see if this is on / off ? )
Vectors
Worksize
Intensity
What is the long8 at the end of the .bin produced ?
Thanks !
|
|
|
|
The problem comes from manufactures no following the specs. A 20 pin mobo connecter should be able to supply 75w total to all the PCIe slots, 24 pin is 150w total. Reference GPU cards are designed to pull no more than 25w from the PCIe slot.
What I thought they pulled 75W from the slot. |
|
|
|
I get 400+ out of 5850's, 450+ out of 5870's is nothing special. You got remember, just cause you can't doesnt mean someone else can't  But i know what the problem is to the origional post of the op, You bought a XFX, thats your problem Steer clear is the best advice  How did you get 450 + out of a 5870  |
|
|
|
Please get it, this round is horrible.
Yeah. I hope we do find that block ! |
|
|
|
Cards with fail fans go into the mineral oil tank.  I have been wondering about that. I actually think its a pretty good idea to have working fans even when submerged in oil. Perhaps removing the shrouds is enough when there is a high enough flow of oil, but Id rather have a fan on it. Make sure you keep us posted if you decide to carry on that crazy idea of yours about the oil submersed rig ! Thanks ! Why is it crazy? I have 6 cards hanging in a rubbermade tote full of mineral oil. The oil gets pumped through a radiator that is mounted to the outflow of a window mounted AC. I believe you but pictures would be nice so I can understand your setup and maybe create my own ! Thank you ! |
|
|
|
OP has been pretty reliable so far.
Hope he keeps his word and delivers.
He owes me about 3.45936315 BTC so far.
Address is 1Ahbp2y64JFSQu1D6N5rkhw4PtaY9oXtE3
You can see if he is trustworthy or not if he pays me those BTC or not.
Let us hope he is a man and honors his word.
For the time being, I have thus stopped mining. He needs to pay me 94,193 shares - 14648 ( already paid ) = 79545 shares at difficulty 1,379,647
I see some people mining like Alice Inovation with about 16 ghash/s so maybe he can be trusted ?
Payment just sent, Sorry was watching the game. Yes, received. Thank you for keeping your word ! |
|
|
|
Well, I do not have any concern about the Molex connector but the motherboard itself Do you think the traces in your board can support all that current? And the power comes from the molex connector will be routed to the PCI-E slots with big enough traces or the motherboard designers decided to route it to the CPU? Or half and half? Or anything else? Simply said, we do not have much info how a particular motherboard was designed. So a safe bet is not to put too much current on it. Down time is expensive  Yes that is a fair point as well. So do you think that it is fair to assume that on these types of mobos you can easily do 2 * 5970s off the board itself and 2 * 5970s using powered extenders or maybe only one 5970 using a powered extender ? The mobo ATX connector gives them say 75W and the molex another 75W so two 5970s are covered but the rest 2 cards need to be using powered extenders, right ? Has anyone tried doing 3 unpowered 5970s and one powered 5970 on one of these "special" boards with additional power connectors to feed the PCIe slots ? Cablesaurus ( extender guy ) was quoted saying : "You need to make sure as a rule of thumb you're not running more than 4 cards per motherboard without Molex extenders." and "any and all dual GPU cards need run through a Molex powered cable if using an extender. This includes 5970's, 6990's etc." How do those requirements above change if using one of those special mobos with additional power connectors feeding the PCIe slots ? Thanks ! |
|
|
|
Cards with fail fans go into the mineral oil tank. I have been wondering about that. I actually think its a pretty good idea to have working fans even when submerged in oil. Perhaps removing the shrouds is enough when there is a high enough flow of oil, but Id rather have a fan on it. Make sure you keep us posted if you decide to carry on that crazy idea of yours about the oil submersed rig ! Thanks ! |
|
|
|
|
OP has paid total of 184 168 shares !
14 648 + (94 193 - 14 648) + 89 975 = 184 168
In response to "jake262144" I would say that as long as he keeps his pool secure and his users paid I don't really care about his grammar or technical knowledge.
We all were noobs at those things at some point !
|
|
|
|
Payment received ! Thanks !
NO. I don't agree morally with hopping and I do not practice it at all. I don't want to be hopped so that is why I use PPS pools.
I currently made an account with you as my backup pool in case something goes bad.
If it looks like I am hopping it is either because I have you set as the backup pool or because I am manually taking my rigs on and off to test some clocks and settings etc.
Is that a generic reply , I saw it in another thread *tongue in cheek* Its ok up till now alot of users would be "seen" as potential hoppers which is my fault and its being sorted out. I would let everyone know when I am assured of no more idleminers or slow work sends, thats when I will know if users dedicated their hashing or simply mess about Yes ATM there seems to be some competition between the x% extra PPS people so I go to the highest bidder right now but I have you as a backup. I am totally against hopping and I have 3.5 ghash/s. I can provide screenshots and evidence if needed. In case my current pool goes down or stops being profitable you are next on the list I will use etc. Thanks for your understanding and be assured nothing fishy is going on It is either cgminer switching to other pool when it comes up or me testing my rigs as they are just setup this weekend and I need to test stability / clocks etc. but for the next billing cycle I will stay well clear of 1 ghash/s as I have much more than that ! |
|
|
|
|
Payment received ! Thanks !
NO. I don't agree morally with hopping and I do not practice it at all. I don't want to be hopped so that is why I use PPS pools.
I currently made an account with you as my backup pool in case something goes bad.
If it looks like I am hopping it is either because I have you set as the backup pool or because I am manually taking my rigs on and off to test some clocks and settings etc.
|
|
|
|
thanks for the info, that all sounds good, but I'd assumed that Ubuntu, drivers, miners, scripts, SSH & anything else that needed to be installed to mine would be already on it as you're using it for that I'd guessed, then you'd just need to explain to me how to point it at a pool or set that up for me would be best, otherwise I'll check out round here to see if anyone could do that for me & show me how to maintain it
if you haven't sold it by towards the end of next month then I expect to be visiting the UK for the last week or so & if we'd agreed everything then perhaps I could then pay in cash or BTC after you'd given me a demo plus any instructions I'll need & take it straight to shippers unless it can be well enough packed for hold luggage & hopefully by then I would have sorted out my 'lecy problem
If you want help setting it up ( either from scratch or as left by CYPER ) I can help. I got mine setup with cgminer and best software combinations and settings too without overvolting etc. = rock stable. One rig gets about 1.5 BTC / 24 hours if you know where to look. I have got exactly the same setup on two rigs over here with 4*5870s on each and getting exact hashrate like CYPER and even same wattage ( 750W at wall on a SB rig and 850W at wall on old P4 rig ). Happily mining at 1780 mhash/s each of them. Let me know if you need help ! My rates are very reasonable. |
|
|
|
PCIE is the more powerful connector as PSUs don't enforce the 75W limitation, therefore are able to supply insane amounts of current should it be required.
Also, being able to get rid of the old-fashioned molex daisy chains is a boon from elegance standpoint.
Fair points. I hate that molex BS because it really is hard to get in or take out. I can't even understand how the PSU latch works  |
|
|
|
|
Anyone getting "Website under construction" ?
I can't seem to see my earnings though I remember it being 0.38 or something like that.
Thanks !
|
|
|
|
OK. So in conclusion is it better to buy a mobo that uses the molex connector on board or the 6pin connector on board ? |
|
|
|
The reason I am asking is this : 8 pin = 150W 6 pin = 75W PCIe slot = 75W Molex = 24pin ATX mobo connector = 150W for 12V power to the PCIe slots ? 20pin ATX mobo connector = 75W for 12V power to the PCIe slots ? On my mobos I have these molex connectors that are there to give extra power through to the PCIe slots. How much power can I pull through this molex connector on my mobo ? Can I avoid having to use powered extenders and just use regular extenders now that I have this connector on my mobo ? Example of molex on mobo for additional PCIe slot power :  Is the molex on the mobo better than the 6pin connector on the mobo ? Can I pull more through that molex than through the 6pin on the mobo ? Example of 6pin on mobo for additional PCIe slot power :  There are also some motherboards that supply and additional SATA-like connector for providing more power to the PCIe slots. How does this compare to the molex and 6pin connectors ? Basically which type of connector allows me to push more power through : the molex, the 6pin or the SATA one ? Example of SATA-power on mobo for additional PCIe slot power :  Thanks ! |
|
|
|
So if I have 3.5 ghash/s I will only get 105% PPS rate then ? Do you hop? If not I can bump you up a bit. But you will have to stay on 24/7. NO. I don't agree morally with hopping and I do not practice it at all. I don't want to be hopped so that is why I use PPS pools. I currently made an account with you as my backup pool in case something goes bad. If it looks like I am hopping it is either because I have you set as the backup pool or because I am manually taking my rigs on and off to test some clocks and settings etc. If I would make you my main 24/7 with 3.5ghash/s what rate would you be prepared to pay ? Thank you for the quick response ! |
|
|
|
So if I have 3.5 ghash/s I will only get 105% PPS rate then ? |
|
|
|
|
Show Posts
