Psu for SLI RTX 2080 ti

[mikedrewsmy]

 

Managed to grab 2 MSI RTX 2080 TI Gaming X Trio.

 

May i know if a Corsair AX1200i would be suffice?

 

Price is crazy in Malaysia. paid around usd3000 for it

[Firewrath9]

Prob at leas 860 watts like the ax860i, corsair HX-series like the hx1000i is better value imo then AX

[MadPistol]

Nvidia recommends a 650-watt PSU for a single car system. An AX 1200i has 8 PCIe power connectors, and each 2080 Ti requires 2 (for a total of 4).

 

You're fine.

[LienusLateTips]

1 minute ago, Firewrath9 said:

ax860i

Pretty old design.

Just now, MadPistol said:

Nvidia recommends a 650-watt PSU for a single car system. An AX 1200i has 8 PCIe power connectors, and each 2080 Ti requires 2 (for a total of 4).

 

You're fine.

A 550W unit would probably be fine for single card. 850W would be fine for two cards.

[Spotty]

2 minutes ago, VegetableStu said:

 

wait for reviews to be sure. look at Nvidia's page to be quick

That won't be able to power 2x RTX2080tis in SLI.
 

Spoiler

Battersea Power Station closed down 30+ years ago.

[MadPistol]

5 minutes ago, LienusLateTips said:

 

A 550W unit would probably be fine for single card. 850W would be fine for two cards.

I'd be careful with that recommendation. The 2080 Ti has 2 8-pin PCIe connectors. An 850-watt PSU might be cutting it a bit close for 2 cards.

 

Until we see reviews with power numbers, I'd recommend a 1000-watt PSU minimum for  2080 Ti SLI.

 

 

Also, his original post asks if an AX 1200i would suffice, to which I replied "yes". (because it will)

[Firewrath9]

3 minutes ago, LienusLateTips said:

Pretty old design.

Huh. Didn’t know that. It’s still platinum and tier 1 tho.

what’s the current flagship? The HX-series?

[LienusLateTips]

2 minutes ago, MadPistol said:

I'd be careful with that recommendation. The 2080 Ti has 2 8-pin PCIe connectors. An 850-watt PSU might be cutting it a bit close.

215W TDP. NVIDIA cards always fall below the TDP in power draw (well, most of the time), so let's say 205W. 205W + 95W CPU (i7-8700K) + 150W overhead = 410W. It'll be just fine as long as it's a quality unit.

2 minutes ago, Firewrath9 said:

Huh. Didn’t know that. It’s still platinum and tier 1 tho.

And there are still better options out there like EVGA P2 and Corsair HX tho.

[LienusLateTips]

3 minutes ago, Firewrath9 said:

what’s the current flagship? The HX-series?

AXi, but the 1200W+ version that aren't too old. The 760/860 have kinda been replaced by HXi which has a newer design and quieter fans

[Firewrath9]

2 minutes ago, LienusLateTips said:

And there are still better options out there like EVGA P2 and Corsair HX tho.

I’ve had good experiances with corsair, i usually reccommemd them and as he is dropping 6k for those cards, i went with corsair’s flagship. Not sure about evga’s PSU’s I only used a NEX in a build.

see edit about the HXi-series. Nvm

[Firewrath9]

1 minute ago, LienusLateTips said:

AXi, but the 1200W+ version that aren't too old. The 760/860 have kinda been replaced by HXi which has a newer design and quieter fans

K thx

[alexhelvetica]

9 minutes ago, MadPistol said:

I'd be careful with that recommendation. The 2080 Ti has 2 8-pin PCIe connectors. An 850-watt PSU might be cutting it a bit close.

 

Until we see reviews with power numbers, I'd recommend a 1000-watt PSU minimum for  2080 Ti SLI.

 

 

Also, his original post asks if an AX 1200i would suffice, to which I replied "yes". (because it will)

You do realise how much power a computer with GTX 580 SLI or R9 290X XFire uses?

 

About 631W (after factoring in power loss from converting AC to DC) for a system with an Extreme Edition and R9 295x2

 

[LienusLateTips]

2 minutes ago, Firewrath9 said:

I’ve had good experiances with corsair, i usually reccommemd them and as he is dropping 6k for those cards, i went with corsair’s flagship. Not sure about evga’s PSU’s I only used a NEX in a build.

Except it's their old flagship...

 

Corsair makes shit PSUs too, EVGA makes great PSUs too...

 

Never trust the brand, trust the model...

[Frank_Sinatra]

I can't help you with the recommendations but i can tell you one thing. You Are A Badass.

[Firewrath9]

2 minutes ago, LienusLateTips said:

Except it's their old flagship...

 

Corsair makes shit PSUs too, EVGA makes great PSUs too...

 

Never trust the brand, trust the model...

I’m not saying all of corsair’s stuff is amazing, and evga’s stuff is bad, I like evga mobos, AIOs and Graphics Cards.

[WereCat]

Well, you will likely need the same PSU wattage as for 1080ti SLI, maybe 100W more just to be safe. 

[MadPistol]

18 minutes ago, LienusLateTips said:

215W TDP. NVIDIA cards always fall below the TDP in power draw (well, most of the time), so let's say 205W. 205W + 95W CPU (i7-8700K) + 150W overhead = 410W. It'll be just fine as long as it's a quality unit.

I'm getting too old for this...

 

From Nvidia's site.

https://www.nvidia.com/en-us/geforce/graphics-cards/rtx-2080-ti/

 

 

Lets assume that he's going to overclock (as that is a worst case scenario) and Nvidia currently has graphics card power listed as 260-watts. At full tilt, that's 520-watts right there. NOW lets assume he's got the CRAZIEST consumer hardware you can buy (because he did just purchase the two most powerful Nvidia consumer graphics cards). That would be the Ryzen 2990wx, and according to Tom's hardware

https://www.tomshardware.com/reviews/amd-ryzen-threadripper-2-2990wx-2950x,5725-13.html

 

 

That's 1000-watts

 

All things being equal, I'd recommend a 1000-watt PSU, especially since we don't know the true power consumption of Nvidia's 2080 Ti or what sort of other specs he currently has on his system.

 

 

Do you understand my reasoning? I'd much rather over recommend and he have room to spare than under recommend and he be unhappy because some random joe on a forum said an 850-watt PSU can power my 2990wx and 2 2080 Ti's at full torture test levels... and until I get more information, either from reviews with power consumption figures, or from the OP with his actual system specs, I will be sticking with this recommendation.

 

 

Also, a Corsair AX1200i is completely and utterly fine, no matter what, which is what the original question was, anyway.

[Jurrunio]

23 minutes ago, LienusLateTips said:

215W TDP. NVIDIA cards always fall below the TDP in power draw (well, most of the time), so let's say 205W. 205W + 95W CPU (i7-8700K) + 150W overhead = 410W. It'll be just fine as long as it's a quality unit.

Wrong, 2080ti has 250w TDP (2080 has 215w). You're looking at the wrong place. When overclocked with power limit raised (let's assume 20% for 10 series reference cards, since we dont get 3rd party reviews of 20 series cards yet), you get 300w power limit.

 

Also, 8700k when overclocked to 5GHz+ (which I totally expect someone buying 2 2080ti will do) will draw ~200w. Since 8700k draws exactly 50% more power than 7700k with 50% more cores, I can suspect the 9900k at 5GHz to draw ~270w, maybe higher if its frequency goes further up.

 

Apply your 'equation' again, that's 650w with 8700k, 720w with 9900k with a single 2080ti, everything overclocked. Two 2080ti? 950w with 8700k, 1020w with 9900k. Oh dear.

[MadPistol]

Just now, Jurrunio said:

Wrong, 2080ti has 250w TDP (2080 has 215w). You're looking at the wrong place. When overclocked with power limit raised (20% for 10 series reference cards), you get 300w power limit.

 

Also, 8700k when overclocked to 5GHz+ (which I totally expect someone buying 2 2080ti will do) will draw ~200w. Since 8700k draws exactly 50% more power than 7700k with 50% more cores, I can suspect the 9900k at 5GHz to draw ~270w, maybe higher if its frequency goes further up.

 

Apply your 'equation' again, that's 650w with 8700k, 720w with 9900k with a single 2080ti, everything overclocked. Two 2080ti? 950w with 8700k, 1020w with 9900k. Oh dear.

Go with a Ryzen 2990wx and you're WAAAAAYYYYYYYYYYY over 1000-watts. lol

[mikedrewsmy]

18 minutes ago, MadPistol said:

Go with a Ryzen 2990wx and you're WAAAAAYYYYYYYYYYY over 1000-watts. lol

Ordered one with zenith extreme and its on its way towards me. Was hoping to get meg x399 creation but no availability yet in Malaysia.

[Spotty]

58 minutes ago, mikedrewsmy said:

May i know if a Corsair AX1200i would be suffice?

AX1200i would be a good choice for 2990WX + 2x RTX2080tis.

[mikedrewsmy]

19 minutes ago, Spotty said:

AX1200i would be a good choice for 2990WX + 2x RTX2080tis.

I wont be using my 2990WX with 2080ti's.. i would go for quadro rtx instead

[Firewrath9]

1 hour ago, MadPistol said:

I'm getting too old for this...

 

From Nvidia's site.

https://www.nvidia.com/en-us/geforce/graphics-cards/rtx-2080-ti/

 

 

Lets assume that he's going to overclock (as that is a worst case scenario) and Nvidia currently has graphics card power listed as 260-watts. At full tilt, that's 520-watts right there. NOW lets assume he's got the CRAZIEST consumer hardware you can buy (because he did just purchase the two most powerful Nvidia consumer graphics cards). That would be the Ryzen 2990wx, and according to Tom's hardware

https://www.tomshardware.com/reviews/amd-ryzen-threadripper-2-2990wx-2950x,5725-13.html

 

 

That's 1000-watts

 

All things being equal, I'd recommend a 1000-watt PSU, especially since we don't know the true power consumption of Nvidia's 2080 Ti or what sort of other specs he currently has on his system.

 

 

Do you understand my reasoning? I'd much rather over recommend and he have room to spare than under recommend and he be unhappy because some random joe on a forum said an 850-watt PSU can power my 2990wx and 2 2080 Ti's at full torture test levels... and until I get more information, either from reviews with power consumption figures, or from the OP with his actual system specs, I will be sticking with this recommendation.

 

 

Also, a Corsair AX1200i is completely and utterly fine, no matter what, which is what the original question was, anyway.

a 7980XE on lm2 can draw almost 2k watts...

a 1080 ti can reach 1200 watts on ln2...

4 1600 Watt PSUs shoukd be fine.

good luck overclocking!

 

 

[mikedrewsmy]

49 minutes ago, Firewrath9 said:

a 7980XE on lm2 can draw almost 2k watts...

a 1080 ti can reach 1200 watts on ln2...

4 1600 Watt PSUs shoukd be fine.

good luck overclocking!

 

 

Okay i think i'll go for 1600 for futureproofing. Thanks.

[Jurrunio]

1 hour ago, mikedrewsmy said:

zenith extreme

ohhh dear. Asus calls it 'extreme', but they will send you a 40mm fan to put on it as an aferthought because apparently it's not enough for the 32 core.