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Sapphire Pulse vega 56 issue

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Video Card(s) sapphire pulse Vega 56 8gb hbm2
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so i got this new grapics card and it looks amazing reminds me back of the huge cards i had in the past like 7970
now i got an issue. my current psu only got 2x 6 pin pci-e power cables and im wondering of thats the reason why the system wont boot cus the card got 2x 8
orginaly the hp z800 work system comes with 6 to 8 pin addapters i can find them online for a 100 usd per piece orginales ones. but i bought some cheap alternatives ;)
so im wondering if that would fix my issue if it realy needs 2x 8 pin connectors
 
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What kind of PSU/wattage has that hp z800 got?
 
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Video Card(s) sapphire pulse Vega 56 8gb hbm2
Storage 300gb hdd. 1tb hdd. 240gb ssd OS. 160gb ssd. 160gb pci-e ssd Fusion io drive. 3tb raid 1 hdd
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Assuming you bought it used, there could be some powerplay mods in place for maximizing mining but causes 3d stuff to be unstable.
 
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3,895 (0.77/day)
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System Name HP z800 workstation
Processor Intel Xeon X5687 3,60ghz 12mb cache x2
Motherboard HP Z800
Cooling All stock fans replaced with noctua brand fans
Memory 24gb ecc ram 1333mhz
Video Card(s) sapphire pulse Vega 56 8gb hbm2
Storage 300gb hdd. 1tb hdd. 240gb ssd OS. 160gb ssd. 160gb pci-e ssd Fusion io drive. 3tb raid 1 hdd
Display(s) AOC display 1080p
Case HP z800 workstation case
Audio Device(s) Onboard
Power Supply HP z800 1100 watt
Mouse Drakonia Black
Keyboard Xtrust nameless?
Software Windows 7 ultimate 64bit, Luxion Keyshot 5&7, 3ds max 2016, fusion 360
Benchmark Scores 3d mark 11 P18 135. Cinebench 1033. timespy 6151
Assuming you bought it used, there could be some powerplay mods in place for maximizing mining but causes 3d stuff to be unstable.
the gpu is brand new
 
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130930



As long as your PSU has enough wattage you should be fine. Look at the diagram, the extra 2 pins are ground and sense. Sense are for power regulation, not power delivery.
 
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View attachment 130930


As long as your PSU has enough wattage you should be fine. Look at the diagram, the extra 2 pins are ground and sense. Sense are for power regulation, not power delivery.
is that not missing a +12v connection though according to the official spec? I mean I know I have heard this before but surely why the need for a seperate 8pin when a 6pin can carry the same kind of power?
 
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is that not missing a +12v connection though according to the official spec? I mean I know I have heard this before but surely why the need for a seperate 8pin when a 6pin can carry the same kind of power?

Indeed, there's a reason for those extra lines, overloading a 6pin connection might be fine but it could trigger the OCP protection in the PSU.
 
Joined
Aug 4, 2007
Messages
3,895 (0.77/day)
Location
Netherlands
System Name HP z800 workstation
Processor Intel Xeon X5687 3,60ghz 12mb cache x2
Motherboard HP Z800
Cooling All stock fans replaced with noctua brand fans
Memory 24gb ecc ram 1333mhz
Video Card(s) sapphire pulse Vega 56 8gb hbm2
Storage 300gb hdd. 1tb hdd. 240gb ssd OS. 160gb ssd. 160gb pci-e ssd Fusion io drive. 3tb raid 1 hdd
Display(s) AOC display 1080p
Case HP z800 workstation case
Audio Device(s) Onboard
Power Supply HP z800 1100 watt
Mouse Drakonia Black
Keyboard Xtrust nameless?
Software Windows 7 ultimate 64bit, Luxion Keyshot 5&7, 3ds max 2016, fusion 360
Benchmark Scores 3d mark 11 P18 135. Cinebench 1033. timespy 6151
so would 2x 6 pin work on 2x 8 pin connection?
 
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