[PSU] & [GPU] MSI MPG A850G 850W 80 Plus Gold PCIe5.0

AmatoX

O.o
Joined
Jun 5, 2023
Messages
4
Hi.

GPU: Asus TUF 3090 RTX OC [8+8 connector]
PSU: MSI MPG A850G 850W 80 Plus Gold PCIe5.0


GPU has 2x 8pin (PCIe) power connection on the top. PSU has 3x 8pin PCIe slots, and that is OK. But this PSU has a one more connector, +12VHWDP.
In box we can find two cables
1. 12VHWDP to 12VHWDP
2. 12VHWDP to 2x 8pin


The first question is:
Can I connect cable (12VHWDP to 2x 8pin) between PSU and GPU?
(by the 12VHWDP end connect to PSU and 2x 8pin of second end to GPU)

Second question:
if i can connect PSU to GPU with this cable, will this cable withstand more than 300W?

IMG20230605113640-msi.jpg


IMG20230605113840-msi.jpg


Screenshot_20230605_115006.png
 
Last edited:

AmatoX

O.o
Joined
Jun 5, 2023
Messages
4
Thx for ur reply.

Sounds good for me, but still, a I have so small doupts because I can't find information about that variant in any official instruction or broshour. Only information what I found I present here with two images below.

First image is from MSI website (of this PSU). Second one is from a deep why-my-gpu-was-burn internet - i preffer official sources, or more official like this forum ;)

So, on images below, we have 2 variants equal to my case: 2VGA and 3VGA.
I have GPU with 8+8 [case 2VGA], and cable from PSU 16-to-8+8 [dedicated for variant 3VGA, the connector "16 to 2VGA"]

>> You can
And as I can see, yes, you are right, I can connect 16(PUS) to 8+8(GPU) - so that is excelent information for me. And I am appreciate for your answer - I feel now more peacly.

Screenshot_20230606_065554.png


>> But..
What with Watts?
When I connect 16 to 8+8 it will not have the same situation like on image below, "DON'T DO THIS"? GPU used by me, Asus GeForce TUF 3090 OC, has a big power consuption. I think the case "don't do this" is for some tiny cables, but I don't found any information about sizes of normal cables and any info about cables from 16-pin connector.
So I'm afraid that my GPU will be damaged and guaranty don't cover this loss.

qfwh3kboeyl51.png
 

Svet

Well-known member
Administrator
Joined
Nov 20, 2003
Messages
81,189
What with Watts? When I connect 16 to 8+8 it will not have the same situation like on image below, "DON'T DO THIS"? GPU used by me, Asus GeForce TUF 3090 OC, has a big power consuption. I think the case "don't do this" is for some tiny cables, but I don't found any information about sizes of normal cables and any info about cables from 16-pin connector.
The 16-pin connectors is up to 600W.

GPU used by me, Asus GeForce TUF 3090 OC, has a big power consuption
The GPU has 2x8pins, and you connect to x2 separated 8pin cables.
There is no any issues with that.
You can't connect it better way than this.

So I'm afraid that my GPU will be damaged and guaranty don't cover this loss.
You can't damage the GPU if doesn't get enough power, but can become unstable & crashing.
 

AmatoX

O.o
Joined
Jun 5, 2023
Messages
4
Thx for your advice and time.
Now I will connect GPU with this cable. :cool:
 

Svet

Well-known member
Administrator
Joined
Nov 20, 2003
Messages
81,189
situation like on image below, "DON'T DO THIS"? GPU used by me, Asus GeForce TUF 3090 OC, has a big power consuption. I think the case "don't do this" is for some tiny cables, but I don't found any information about sizes of normal cables and any info about cables from 16-pin connector.
Those schemes on Seasonic's photos have different meaning, not just the size of the cables,
but max power draw per channel connector from the PSU,
because they are using shared x2 8pin cables. x2 8pin from one cable from one PSU channel.

They mean is do not connect both x2 8pin from one cable (one PSU channel),
if the GPU is too powerful and have only x2 power connectors,
else the PSU's connector can burn/melt and other issues.
[use 2 power cables as source instead, from 2 PSU channels]

This has no connection with your MSI PSU here,
which don't use such shared x2 8pin cables.

Thx for your advice and time.
Now I will connect GPU with this cable. :cool:
Super:emot-tip-wink:
 
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