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

[twin_savage]

In general, what is the minimum power consumption of a processor, as reported by owners of these processors in this thread?

my w5-3435x will do ~82 watts as reported by hwinfo64 at idle in Windows if and only if i set the power plan to "Power saver"

 

[Max1024]

Hi everyone in 2026, what's your temperature difference between cores under full CPU load? I have 20 cores, and one core has a 20°C temperature difference. I tried changing the thermal paste and cooling system, but this did not change the situation, apparently this is a feature or this core (14-th) is not located in a very good place.

 

[RolloZ170]

Hi everyone in 2026, what's your temperature difference between cores under full CPU load? I have 20 cores, and one core has a 20°C temperature difference. I tried changing the thermal paste and cooling system, but this did not change the situation, apparently this is a feature or this core (14-th) is not located in a very good place.

what CPU exactly or a riddle ?
can be bad soldering, if your CPU is ES this is not sorted out at test.
if not soldered CPU (maybe who knows) dried out TIM.

 

[Max1024]

I have 3535x.
All LGA4677 processors have solder under the HS.

 

[RolloZ170]

I have 3535x

bad soldering, Intel should replace it.
edit:
3535x is XCC 4 tiles each 5 cores model, 4 cores at almost same worse place.

 

[Max1024]

That's why I'm interested here in what the difference in temperatures is when the processor is fully loaded on your cpu samples.

 

[Ollie499]

Hi everyone!
I'm building a deep learning rig on the ASUS Pro WS W790E-SAGE SE and I have a question regarding the dual PSU setup.
I have two different PSUs:
Super Flower Leadex III 1300W (Main: for MB/CPU/4080)
Fractal Design ion 850W unit (Secondary: purely for 3x MI50 accelerator cards via PCIe cables)
The manual explicitly states: "ensure that both PSUs need to be of the same brand and model".
My understanding is that connecting different PSUs to ATX_PWR(1) and ATX_PWR(2) might bridge the 12V/5V rails, causing cross-loading issues if voltages aren't identical.
The question is:
Does anyone know if the board isolates the power rails between the two ATX headers and only syncs the PS_ON signal? Or does it electrically merge them?
Is it safe to plug both mismatched PSUs into the motherboard headers, or should I ignore ATX_PWR(2) and use an external Add2PSU adapter to sync them safely?

 

[Max1024]

Good question, but what if to connect a weaker power supply to the motherboard and a more powerful one to the video cards? One 850 Will be enough for the CPU.

 

[custom90gt]

Hi everyone!
I'm building a deep learning rig on the ASUS Pro WS W790E-SAGE SE and I have a question regarding the dual PSU setup.
I have two different PSUs:
Super Flower Leadex III 1300W (Main: for MB/CPU/4080)
Fractal Design ion 850W unit (Secondary: purely for 3x MI50 accelerator cards via PCIe cables)
The manual explicitly states: "ensure that both PSUs need to be of the same brand and model".
My understanding is that connecting different PSUs to ATX_PWR(1) and ATX_PWR(2) might bridge the 12V/5V rails, causing cross-loading issues if voltages aren't identical.
The question is:
Does anyone know if the board isolates the power rails between the two ATX headers and only syncs the PS_ON signal? Or does it electrically merge them?
Is it safe to plug both mismatched PSUs into the motherboard headers, or should I ignore ATX_PWR(2) and use an external Add2PSU adapter to sync them safely?

Sadly I don't know if anyone can answer that. Why not spend the $170 and buy a matching Leadex III?

 

[Ollie499]

Sadly I don't know if anyone can answer that. Why not spend the $170 and buy a matching Leadex III?

I haven't any other Leadex III in stock(

 

[DHamov]

When i had the W790E-SAGE SE for a few weeks (in the return period) i have tried with 2 non-matching psu, it sort of worked but i had start up glitches, that the security fuse of the apartment blew out when i started the computer about 20% of computer start ups. I returned one of the psus it was a amazon returns Corsair. and then decided to run the set up QYFS +2xRTX 3090 and A4000 Ada throttling their power with a single 1300W psu, and reducing the cpu short time power limit so 400W cpu+2x270W rtx+60W a4000 +rest. That worked fine. I am not sure how you will cool your MI50s but reducing power limits might be a good idea any way. For long compute runs those last 20% power is not worth everything for me. In a hurry on short runs i temporary increase power sometimes. When you do deep learning, it is rare to have full load on the cpu and gpu simultaneously. My cpu always maxes out around 60% when the gpu are doing the work. Long story short why not try and set max 400W cpu 3x250W gpu and use just one psu?

 

[Max1024]

I have a question about PSU connecting.
By default, the power supply is connected to the "F" connector. Is it possible to connect a single PSU to the "E" connector? As I understand it, the 8-pin CPU connectors will need to be moved to "B" and "D" or can they be left in "A" and "C"?
And another question about the "H" connector. The manual doesn't describe its purpose. I suspect it's for powering the PCI-E slots, like the "G" connector. Is this correct? Maybe they are shared voltage?

 

[RolloZ170]

I suspect it's for powering the PCI-E slots, like the "G" connector. Is this correct? Maybe they are shared voltage?

The PCIE_6P_PWR provides additional power for your PCIe X16 slots.

 

[Max1024]

The PCIE_6P_PWR provides additional power for your PCIe X16 slots.

I tested it. If I don't connect the G connector, a message will appear on the POST screen with warning you to connect the G connector. If the G connector isn't connected, but only the H connect, this message will also appear on the POST screen.

 

[Max1024]

arabus
I just want to figure out what the H connector is for. I understand that it powers the board's components, but the G connector's wiring appears to be different, since connecting it doesn't clear the message about connecting the G connector. The board's manual doesn't explain the H connector's purpose.

 

[RolloZ170]

The board's manual doesn't explain the H connector's purpose.

manual
"The PCIE_6P_PWR provides additional power for your PCIe X16 slots."
if you want 6 GPU who each draws 65W +12V from slot you need additional power, normaly the 2 +12V wires from ATX24pin supply PCIe.

 

[NO_ob]

i saw people on previous page mentioning idle power usage is it possible to get it down on a qyfs? my cpu package power on desktop with nothing running is 198w

 

[RolloZ170]

i saw people on previous page mentioning idle power usage is it possible to get it down on a qyfs?

sure. use not high perf. power plan or edit it.
min.processor perf. 100% -> 10%

my cpu package power on desktop with nothing running is 198w

nothing is mostly not nothing.
if your cores are all down to 800mhz you have IDLE.
do not OC mesh clock.
you should anle to go down to 100Watts.

 

[NO_ob]

sure. use not high perf. power plan or edit it.
min.processor perf. 100% -> 10%

nothing is mostly not nothing.
if your cores are all down to 800mhz you have IDLE.
do not OC mesh clock.
you should anle to go down to 100Watts.

i found you can edit the performance profile in linux with corectrl, you can see the mhz drop from when i applied the profile which went down to 115w should have looked into this before lol wonder how much lower my power bill would have been the last year

 

[Andrix]

i found you can edit the performance profile in linux with corectrl,

In a case you are looking for command-line tools, here is a couple of suggestions.

echo performance | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

Changes the scaling-governor settings between performance and powersave .

sudo turbostat

Prints out a lot of details including the package temperature, power usage, core frequencies etc. This is a chunk from the output.

...
Core  CPU  Avg_MHz  Busy%  Bzy_MHz  TSC_MHz  IPC  IRQ  SMI  POLL  C1  C1E  C6  POLL%  C1%  C1E%  C6%  CPU%c1  CPU%c6  CoreTmp  CoreThr  PkgTmp  Pkg%pc2  Pkg%pc6  PkgWatt  RAMWatt  PKG_%  RAM_%  UncMHz
-  -  0  0.05  922  1901  1.07  2892  0  14  24  1708  1095  0.00  0.00  0.30  99.68  0.30  99.65  31  0  31  15.05  64.71  75.17  12.98  0.00  0.00  800
0  0  5  0.58  828  1900  0.85  1763  0  12  22  1532  143  0.00  0.06  14.70  84.73  14.69  84.67  28  0  31  15.04  64.69  75.12  12.98  0.00  0.00  800
1  1  1  0.10  981  1900  0.38  41  0  0  0  15  69  0.00  0.00  0.08  99.83  0.08  99.80  25  0
2  2  0  0.03  800  1900  0.56  11  0  0  0  0  12  0.00  0.00  0.00  99.97  0.00  99.97  26  0
3  3  0  0.01  800  1900  0.69  4  0  0  0  1  3  0.00  0.00  0.00  99.99  0.00  99.99  25  0
4  4  0  0.01  800  1900  0.69  4  0  0  0  1  3  0.00  0.00  0.00  99.99  0.00  99.99  27  0
...