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Help with PSU on crossfire

Sarmasx
By Sarmasx
in Power Supplies
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My card (MSI R9 390 gaming 8GB) needs a PSU of at least 750W as it says on the package. If i buy another one for crossfire, that means i will need a PSU of at least 1500W? It doesn't make sense for a PC to need so much power. I don't know if the question sounds silly, but i'm a noob on hardware.

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what's the rest of the rig like?

typically an r9 390 would be fine on a good 550W psu, but i normally recommend 650W for more overhead for overclocking and what not

 

dual r9 390 would need a psu of about 850W

 

assuming you're getting a great PSU

-sigh- feeling like I'm being too negative lately

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Just wait for the 1070/1080 GPU's, I would reccomend one gpu over two, power consumption being one of the con's

 

If you have a really nice PSU, like Teir 1, you need around an 850w, but if its eh, then go for around 1,000w

FPS <3

Flick G1 Review

Nixeus Revel Review

 

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5 minutes ago, Sarmasx said:

My card (MSI R9 390 gaming 8GB) needs a PSU of at least 750W as it says on the package. If i buy another one for crossfire, that means i will need a PSU of at least 1500W? It doesn't make sense for a PC to need so much power. I don't know if the question sounds silly, but i'm a noob on hardware.

No. Those recommendations are massive overestamations. Two R9 390s can be handled by 850W no problem. Hell, Linus Sebastian ran seven R9 Furies from 1600W.

Project White Lightning (My ITX Gaming PC): Core i5-4690K | CRYORIG H5 Ultimate | ASUS Maximus VII Impact | HyperX Savage 2x8GB DDR3 | Samsung 850 EVO 250GB | WD Black 1TB | Sapphire RX 480 8GB NITRO+ OC | Phanteks Enthoo EVOLV ITX | Corsair AX760 | LG 29UM67 | CM Storm Quickfire Ultimate | Logitech G502 Proteus Spectrum | HyperX Cloud II | Logitech Z333

Benchmark Results: 3DMark Firestrike: 10,528 | SteamVR VR Ready (avg. quality 7.1) | VRMark 7,004 (VR Ready)

 

Other systems I've built:

Core i3-6100 | CM Hyper 212 EVO | MSI H110M ECO | Corsair Vengeance LPX 1x8GB DDR4  | ADATA SP550 120GB | Seagate 500GB | EVGA ACX 2.0 GTX 1050 Ti | Fractal Design Core 1500 | Corsair CX450M

Core i5-4590 | Intel Stock Cooler | Gigabyte GA-H97N-WIFI | HyperX Savage 2x4GB DDR3 | Seagate 500GB | Intel Integrated HD Graphics | Fractal Design Arc Mini R2 | be quiet! Pure Power L8 350W

 

I am not a professional. I am not an expert. I am just a smartass. Don't try and blame me if you break something when acting upon my advice.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

...why are you still reading this?

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I used a single a single r9 390 on a 550w no problem, and 850w would be about minimum for crossfiring the two cards

 

My Main PC:

CPU: i5 3570k CPU Cooler: Cooler Master Hyper T4 Motherboard: Asus p8z77-v pro  RAM: Crucial Balistic 2x4gb  GPU: Two PNY GTX 680's in SLI Case: Some rando Antec one  PSU: Thermaltake 1000w  Display: HP Elite Display 321i 23''  Storage: Samsung 840 Evo 128gb, Seagate Barracuda 1tb

 

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2 minutes ago, Hero7750 said:

I used a single a single r9 390 on a 550w no problem, and 850w would be about minimum for crossfiring the two cards

 

 

4 minutes ago, ThinkWithPortals said:

No. Those recommendations are massive overestamations. Two R9 390s can be handled by 850W no problem. Hell, Linus Sebastian ran seven R9 Furies from 1600W.

 

4 minutes ago, DEcobra11 said:

An aftermarket R9 390 might take up to 350 W (this is with extreme load, expect <280 W on gaming)

so 2x 350 = 700 W + 150 W wiggle for the system = 850 W

Don't buy a crap PSU!

 

4 minutes ago, Aytex said:

Just wait for the 1070/1080 GPU's, I would reccomend one gpu over two, power consumption being one of the con's

 

If you have a really nice PSU, like Teir 1, you need around an 850w, but if its eh, then go for around 1,000w

 

5 minutes ago, Moonzy said:

what's the rest of the rig like?

typically an r9 390 would be fine on a good 550W psu, but i normally recommend 650W for more overhead for overclocking and what not

 

dual r9 390 would need a psu of about 850W

 

assuming you're getting a great PSU

The PSU  i intended to buy is the Corsair RMx series RM1000x.

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Just now, Sarmasx said:

 

 

 

 

The PSU  i intended to buy is the Corsair RMx series RM1000x.

That'll do just fine.

Project White Lightning (My ITX Gaming PC): Core i5-4690K | CRYORIG H5 Ultimate | ASUS Maximus VII Impact | HyperX Savage 2x8GB DDR3 | Samsung 850 EVO 250GB | WD Black 1TB | Sapphire RX 480 8GB NITRO+ OC | Phanteks Enthoo EVOLV ITX | Corsair AX760 | LG 29UM67 | CM Storm Quickfire Ultimate | Logitech G502 Proteus Spectrum | HyperX Cloud II | Logitech Z333

Benchmark Results: 3DMark Firestrike: 10,528 | SteamVR VR Ready (avg. quality 7.1) | VRMark 7,004 (VR Ready)

 

Other systems I've built:

Core i3-6100 | CM Hyper 212 EVO | MSI H110M ECO | Corsair Vengeance LPX 1x8GB DDR4  | ADATA SP550 120GB | Seagate 500GB | EVGA ACX 2.0 GTX 1050 Ti | Fractal Design Core 1500 | Corsair CX450M

Core i5-4590 | Intel Stock Cooler | Gigabyte GA-H97N-WIFI | HyperX Savage 2x4GB DDR3 | Seagate 500GB | Intel Integrated HD Graphics | Fractal Design Arc Mini R2 | be quiet! Pure Power L8 350W

 

I am not a professional. I am not an expert. I am just a smartass. Don't try and blame me if you break something when acting upon my advice.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

...why are you still reading this?

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Just now, Sarmasx said:

 

Thank you very much guys.

No problem :D

Project White Lightning (My ITX Gaming PC): Core i5-4690K | CRYORIG H5 Ultimate | ASUS Maximus VII Impact | HyperX Savage 2x8GB DDR3 | Samsung 850 EVO 250GB | WD Black 1TB | Sapphire RX 480 8GB NITRO+ OC | Phanteks Enthoo EVOLV ITX | Corsair AX760 | LG 29UM67 | CM Storm Quickfire Ultimate | Logitech G502 Proteus Spectrum | HyperX Cloud II | Logitech Z333

Benchmark Results: 3DMark Firestrike: 10,528 | SteamVR VR Ready (avg. quality 7.1) | VRMark 7,004 (VR Ready)

 

Other systems I've built:

Core i3-6100 | CM Hyper 212 EVO | MSI H110M ECO | Corsair Vengeance LPX 1x8GB DDR4  | ADATA SP550 120GB | Seagate 500GB | EVGA ACX 2.0 GTX 1050 Ti | Fractal Design Core 1500 | Corsair CX450M

Core i5-4590 | Intel Stock Cooler | Gigabyte GA-H97N-WIFI | HyperX Savage 2x4GB DDR3 | Seagate 500GB | Intel Integrated HD Graphics | Fractal Design Arc Mini R2 | be quiet! Pure Power L8 350W

 

I am not a professional. I am not an expert. I am just a smartass. Don't try and blame me if you break something when acting upon my advice.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

...why are you still reading this?

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