ASUS Pro WS W790E-SAGE SE + Intel Xeon Sapphire Rapids SPR-SP

[ilyard]

Hi guys, need your help again

I'm looking for the power supply for this build.
Right now looking at this one - LEADEX PLATINUM 2000W | SUPER FLOWER
PSU: Leaedex platinum 2000w
I have 3x 3090, one with 2x PCIe 8 pin, and two with 3x PCIe 8pin, so total PCIe for GPU is 8.
As far as I understand motherboard itself is requiring 1x ATX 24 pin, 2x CPU 8 pin each and then 1x PCIe 8pin.

With this PSU it should be enough for that build correct?
Also I did not find motherboard ATX specs, PSU has ATX 12V. V2.2, EPS 12V. V2.91 & SSI EPS 12V. V2.92 Specification.

Any suggestions?

 

[norySS]

assuming you are not using overclocking any of these stuff, that psu will be enough.

For the 3090s with 3x8pin, I would run two cables to each. One of the single Pcie 8pin and one of the "sli" cables, the ones that are twin PCIe Aux 8pin on a single cable.
For the other 2x8pin, run a single cable, and one of the sli cables to it.

Then run the 2x single pcie 8pin cables the mobo. One connected to the 8pin aux under the 24pin and to the 6pin aux under the sata cables.

3090s at 'stock 350w' power levels pull about 50-60w from the pcie slot. x 3, thats at least 150w load. If you connect the AUX, you will alleviate that heavy load from the factory 12v rail on the ATX 24pin. so I think its important that you connect at least that Aux 8pin.

 

[NO_ob]

anyone seen this before? I normally have half cores disabled on my QYFS for the higher boost clocks but decided to enable them all to run some llm benchmarks, even though all cores are enabled in bios 1/4 of them are not actually enabled. I do get the power warning in post about needing an extra 6 pin power cable since isntalling my new GPU so maybe thats causing it or my chips dying or something lol

 

[RolloZ170]

anyone seen this before? I normally have half cores disabled on my QYFS for the higher boost clocks but decided to enable them all to run some llm benchmarks, even though all cores are enabled in bios 1/4 of them are not actually enabled

enter 0 as core bitmask again, save and exit. remove AC power.
in Windows you may need to re-init the scheduler, he is lazy about using the new core count because the CPU has not changed.

 

[RolloZ170]

I do get the power warning in post about needing an extra 6 pin power cable since isntalling my new GPU so maybe thats causing it or my chips dying or something lol

if you changed something more let us know.

 

[NO_ob]

enter 0 as core bitmask again, save and exit. remove AC power.
in Windows you may need to re-init the scheduler, he is lazy about using the new core count because the CPU has not changed.

where do you do that i manually enabled the cores in the cpu disable core configuration page in the bios, previously when ive done that its just worked fine but that was prior to getting the more powerful gpu

 

[RolloZ170]

where do you do that i manually enabled the cores in the cpu disable core configuration page in the bios

forget that, was in another universe (not ASUS)

 

[RolloZ170]

previously when ive done that its just worked fine but that was prior to getting the more powerful gpu

remove it and see what happens.

 

[NO_ob]

remove it and see what happens.

i dont have another gpu to test lol

 

[RolloZ170]

i dont have another gpu to test lol

there is a 15pin VGA

 

[RolloZ170]

i dont have another gpu to test lol

login to BMCWebGUI, use remote iKVM (HTML5) from another PC ?

 

[NO_ob]

login to BMCWebGUI, use remote iKVM (HTML5) from another PC ?

i have a w790 ace so no vga i did read the message about the power though its not because of the gpu its because i had 2 pcie devices so i removed the pcie ssd adapter the power message goes away but still 84 cores maybe i need to clear bios

 

[RolloZ170]

the power message goes away but still 84 cores maybe i need to clear bios

wow, 28 more cores than a QYFS usual has.

maybe i need to clear bios

good idea

 

[NO_ob]

wow, 28 more cores than a QYFS usual has.



good idea

its threads sorry lol, yeah clearing bios bought all 112 back, the menu in the bios must be a bit dodgy, is it worth updating the bios do you know im on quite an old version

 

[norySS]

QYFS Boost 3.7 L3 105M
QYK8 Boost 4.0 L3 112.5M
and diff. accellerator count(not sure)
and price of QYK8 is higher.

Hi Rollo!

Question, I noticed that these SPR-SP connect to the C761 chipset via DMI 3.0 according to this chart?
Is this correct?
When you use these ES chips with this Asus W790E, Do it connect at DMI 3.0, or DMI4.0?

thank you!

 

[RolloZ170]

Question, I noticed that these SPR-SP connect to the C761 chipset via DMI 3.0 according to this chart?
Is this correct?
When you use these ES chips with this Asus W790E, Do it connect at DMI 3.0, or DMI4.0?

DMI4

C741 DMI3x8 (most mobo use x4)
W790 DMI4x8
SPR-WS DMI4
SPR-SP stepping D0 can DMI4 (originaly standard but intel changed mind)
SPR-SP prod.unit DMI3 only.

 

[Phence]

Would it be a good idea to buy this board and a CPU for homelab? I'm curious how people perceive this platform and what is availability on the second hand market.

 

[Civiloid]

Would it be a good idea to buy this board and a CPU for homelab?

Really depends on what you want. I have two systems with W7-3435X (production stepping) and two ASUS W790 Sage SE - as that was easiest way to get an intel system with more than 80 PCIe lanes and I needed more PCIe, less cores.

If you don't need that - probably a server platform would be at least as good.

 

[ilyard]

assuming you are not using overclocking any of these stuff, that psu will be enough.

For the 3090s with 3x8pin, I would run two cables to each. One of the single Pcie 8pin and one of the "sli" cables, the ones that are twin PCIe Aux 8pin on a single cable.
For the other 2x8pin, run a single cable, and one of the sli cables to it.

Then run the 2x single pcie 8pin cables the mobo. One connected to the 8pin aux under the 24pin and to the 6pin aux under the sata cables.

3090s at 'stock 350w' power levels pull about 50-60w from the pcie slot. x 3, thats at least 150w load. If you connect the AUX, you will alleviate that heavy load from the factory 12v rail on the ATX 24pin. so I think its important that you connect at least that Aux 8pin.

Thanks I've ended up buying Seasonic Prime PX-2200 ATX 3 2200W. Worst case I've buy PCIe 5.0 to PCIe 8 pin adapters if not enough.

 

[DHamov]

Thanks I've ended up buying Seasonic Prime PX-2200 ATX 3 2200W. Worst case I've buy PCIe 5.0 to PCIe 8 pin adapters if not enough.

Late to the party, but just wanted to write that I am very happy with my Seasonic Prime PX-1600 it ran 2 Q2SR (8592+ES) and 2 RTX 3090 (reduced the TDP to 290) + A4000 SSF (70W) + stuff without problems. RAM temperatures were my main worry concern in the setup. Also i am was not very short about the short term cpu power limits, so i was carefull, but maybe it does not mater to much. Hope the 2200W with even more power space will work great for your setup too.