Molex pcie 8 pin connector Pc#

Being unable to get the necessary power from the 6 pin 75 watt rated cable, it was pulling that wattage thru the PC slot, exceeding its rated amperage. Problem was the card was drawing well over 150 watts.

No one remembers the RX 480 ? What happened with the 480 was that at launch it had a 6 pin power connector. while you can get away with it with a 1660 Ti, many other cards will cause problems. But it is a bad habit and dangerous to post 'no problem'. If yu intend to OC the card I certainly would not put the power limiter sider above 100%. So you'd be safe with that card as long as you didn't OC it. As we can see here, the MSI Gaming X 1660 Ti can pull 140 - 141 watts So you are good for up to 150 watts with this method. No one remembers the RX 480 debacle ? The problem is not so much the PSU but when the card needs more than 150 watts. On 120v power, a pair of 1280w or higher PSUs will probably be reliable to power 2 GPUs with this PDB.Definitely not a good idea (in general). The ~1000w draw of a 3-GPU server will cause reboots as soon as you engage the GPUs, even with 2000w of power supply capacity attached and running. On 120v power, 1000w+ PSUs are derated to 1000w each, which means 2x 1280 or 2x 1600 should be able to supply 2000 watts - good luck with that. That's 3200w of power supplies for a roughly 1000w maximum load! If you use 2x 1600w 80+ platinum PSUs, both on 208v power, you can probably power 3 GPUs with this. But it can't supply much power for some reason. It does have a large number of PCIe power cables - no adapters needed.

Molex pcie 8 pin connector upgrade#

And it does technically qualify as an upgrade - the PDB that comes stock with a lot of these 4u chassis is terrible - good luck powering more than 1x 1080ti on it. This is an upgrade for 4u supermicro chassis. But if you can find the PDB, it is a step up from using desktop power supplies, in terms of wattage and 80+ rating vs price.Īnother option (I -don't- recommend) is the Supermicro PDB-PT747-4648 power distribution board. Either way you slice it, it's not 'cheap' compared to the HP power supplies + sketchy-looking pcie breakout boards you see crypto miners using. What I normally do for GPU servers, is a few things:įirst, I take the 2x4pin connector, and connect 4 pins to one motherboard 8 pin connector, and the other 4 pins to the second 8 pin motherboard connector.īased on what I could find online, everything I read said this would definitely be fine for CPUs 8+8, or you're using the 2x molex -> 8+8. It has one 8-pin EPS plug and one 2x4-pin EPS plug. Then get the '2 molex -> 2x 8-pin pcie' adapters. Power the motherboard off the 4+4 connector (one 4-pin for each cpu - just stay away from TDP > 115W). It has thicker gauge wires than the '825' model. Then add in an 8-pin EPS -> 2x 8-pin PCIe converter cable (expect it to be stable up to a gpu needing 8+6 level of power). PDB-PT826-8824 is the 'good' model of PDB. (Although I did splurge and use X10SRL-F motherboards + E5 CPUs instead of the cheapest Celeron because I really don't like having systems around I can't manage with IPMI.)

It might not be cost effective to do something like this, but I setup a couple of GPU mining systems with consumer power supplies and missed having access to the PMBUS info that you get with a real server. I thought maybe Supermicro already had a PDU replacement that might include a number of PCIE power connections, but it appears even for their GPU servers they provide the PCIE power connections on the motherboard.

Looks like some people in the past have toyed with it - Dmitry Pakhatov: Supermicro Power Supply PWS-1K41P-1R rev1.1 Occasion and Inexpensive 1400W Power supply Several people are selling breakout boards to take HP server power supplies and break them into 6-pin or 8-pin PCIE power connections for GPUs (like this: DPS-1200FB/QB A Power Supply Breakout Board & 10 Cable 6 pin for Ethereum Mining | eBay ), but I haven't seen anything similar for Supermicro. I have more SC846 chassis and SuperMicro 1k power supplies sitting around than I am really utilizing and am wondering if anyone has tried repurposing these for GPU mining?