Tri sli 470 gtx power requirement

[therevaj]

Debating going tri sli GTX 470s on a z77a-gd65.
Have a 3570k stable @ 4.4 ghz on 1.25 volt.
Would debate ocing the 470s to 750-800hz @ 1.087


Currently have seasonic x-850. Would that be enough to run my rig?


Thanks for the replies!

 

[Rockdpm]

No i wouldn't.. just keep the 3 470's at stock..

 

[therevaj]

I haven't bought the third 470 yet.

Would I be able to handle a third on the x-850 with my set up?

 

[bigcyco1]

Source - http://www.guru3d.com/articles_pages/geforce_gtx_470_2_and_3_way_sli_review,23.html

 

[Metwingie]

Your talking close to 800W when your system is in load. Personally I wouldn't push your PSU to that limit and if you OC your components you will probably be hitting pass 850.

If it were me I wouldn't.

 

[Metwingie]

Here is a chart of power consumption -

http://www.guru3d.com/articles_pages/geforce_gtx_470_2_and_3_way_sli_review,23.html

 

[bigcyco1]

Here is a chart of power consumption -

http://www.guru3d.com/articles_pages/geforce_gtx_470_2_and_3_way_sli_review,23.html

:lol: look at my post 😉

 

[Metwingie]

lol, soz bud. Think I missed that. My bad

 

[bigcyco1]

lol, soz bud. Think I missed that. My bad

:lol: no worries.

 

[therevaj]

Your talking close to 800W when your system is in load. Personally I wouldn't push your PSU to that limit and if you OC your components you will probably be hitting pass 850.

If it were me I wouldn't.

What would be the consequences of doing so.

Aka, what are the worst things that could happen?

 

[belezeebub]

While I am no expert isn't the Z77 limited to 16 lanes with out a PLX so if you tried to run 3 cards you would be in 8/8/4 best case but more likely in 4/4/4 or 8/4/4

 

[belezeebub]

Looked it up your board is (16, 8, 4) I would guess the x4 is stolen from a different chip so x4 wouldn't get you much IMHO

 

[ko888]

When using an Ivy Bridge Processor the three PCIe 3.0 x16 slots of the MSI Z77A-GD65 have the following possible support options:

x16/x0/x0
x8/x8/x0
x8/x4/x4

That means that 2-way SLI is the maximum supported. For the graphics card to be included in the SLI set the x16 slot must have a minimum of 8 PCIe lanes and only two of the three x16 slots on that motherboard have at least 8 PCIe lanes or more.

 

[therevaj]

Interesting. Does my motherboard just suck? I thought I did a fair amount of research

 

[ko888]

Interesting. Does my motherboard just suck? I thought I did a fair amount of research

3-way or 4-way SLI with an Intel Z77 Express chipset motherboard requires that the motherboard also have the PLX PEX8747 bridge chip.

Examples:

ASRock Z77 Extreme9
ASUS MAXIMUS V EXTREME
ASUS P8Z77-V PREMIUM
ASUS P8Z77 WS
ECS Z77H2-AX
EVGA Z77 FTW
Gigabyte G1.Sniper 3
Gigabyte GA-Z77X-UP7
...

 

[therevaj]

3-way or 4-way SLI with an Intel Z77 Express chipset motherboard requires that the motherboard also have the PLX PEX8747 bridge chip.

Examples:

ASRock Z77 Extreme9
ASUS MAXIMUS V EXTREME
ASUS P8Z77-V PREMIUM
ASUS P8Z77 WS
ECS Z77H2-AX
EVGA Z77 FTW
Gigabyte G1.Sniper 3
Gigabyte GA-Z77X-UP7
...

Wow, so way above what I was considering.

Thanks for the help!

 

[therevaj]

Best answer selected by therevaj.