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Crossfire R9 290

sgtsmokey
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Hi people,

 

I currently have the R9 290 Gigabyte (Windforce Ed) and i am thinking of getting another and i have two questions.

1. I currently have Corsair CX750m is it enough or shall i get 850, I guess it isnt as the card runs upto 300 watts and my CPU a max of 150 watts. So if i get another card I will be bang on 750 watts with no over head, if i am right.

2. Even though its the same GPU i am looking at, but just in case i have to buy a different brand. They both have to be clocked at the same speeds and voltages right?

 

Cheers

 

  • Laptop: MSI GF65 + 16GB + 1.2TB + 2060 GTX + i7 9750H Display: 24" LG Ultra Gear 144hz Keyboard: Logitech G213 Mouse: Corsair Harpoon Sound Card: Traktor Kontrol S2 MK2 Speakers: Behringer CR4-X Other: Gaomon Graphics Tablet COOLING: Thermaltake Massive S14 Laptop Cooler

 

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1. it's possible but on the tight side, i wouldn't overclock them

2. this is reccomended , even if you clock one card much higher than the other one the slowest clock speeds ''count'' as for the voltages, this doesn't really matter.

Interested in Business and Technology

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You thinking about OCing? I would go with the ax860 just to be safe :D

My Rig "Jenova" Ryzen 7 3900X with EK Supremacy Elite, RTX3090 with EK Fullcover Acetal + Nickel & EK Backplate, Corsair AX1200i (sleeved), ASUS X570-E, 4x 8gb Corsair Vengeance Pro RGB 3800MHz 16CL, 500gb Samsung 980 Pro, Raijintek Paean

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No It will run just fine on the 750 watts one. 

 

Also no the faster card will just down clock itself to match the slower card. 

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Cheers and no I don't plan to overclock, so I can use that psu. Saving me a small fortune :)

 

  • Laptop: MSI GF65 + 16GB + 1.2TB + 2060 GTX + i7 9750H Display: 24" LG Ultra Gear 144hz Keyboard: Logitech G213 Mouse: Corsair Harpoon Sound Card: Traktor Kontrol S2 MK2 Speakers: Behringer CR4-X Other: Gaomon Graphics Tablet COOLING: Thermaltake Massive S14 Laptop Cooler

 

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750W is enough, but the Corsair CX lineup uses cheap capacitors and I wouldn't recommend it in an SLI build with 2 high-end AMD GPU's.

Here's something at atleast 750W and is something I would recommend very highly:

 

 
Total: $99.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-05-10 11:21 EDT-0400)
 
It's semi-modular, by Seasonic and is 80+ Gold with 750W.
You can use your CX750M if you like, but personally, I wouldn't even touch it with a single R9 290 let alone two of them. 
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