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Wattage for crossfire 290x?

cokemsu
By cokemsu
in Graphics Cards
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I have a 750w gold at the moment, I will need a higher watt power supply if I decide to crossfire 290xs? Everything I've read about it has mixed answers.

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I have a 750w gold at the moment, I will need a higher watt power supply if I decide to crossfire 290xs? Everything I've read about it has mixed answers.

what cpu do you have? and what voltage would you be running them at. you could run it as long as you didn't oc them high. your psu would be pushing it though. a 850w would give you more headroom

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Asrock OC Formula 7970XTX Quadfire

G.Skill Ripheartout X OC 7000Mhz C28 DDR5 4X16GB  

Super Flower Power Leadex 2000W Psu's X2

Harrynowl's 775/771 OC and mod guide: http://linustechtips.com/main/topic/232325-lga775-core2duo-core2quad-overclocking-guide/ http://linustechtips.com/main/topic/365998-mod-lga771-to-lga775-cpu-modification-tutorial/

ProKoN haswell/DC OC guide: http://linustechtips.com/main/topic/41234-intel-haswell-4670k-4770k-overclocking-guide/

 

"desperate for just a bit more money to watercool, the titan x would be thankful" Carter -2016

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what cpu do you have? and what voltage would you be running them at. you could run it as long as you didn't oc them high. your psu would be pushing it though. a 850w would give you more headroom

 

i7 4770k. Dont have experience oc'ing gpu's so I probably wouldnt. All the benchmarks for oc'd 290x's that ive seen only shower 1-2 fps improvement? 

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i7 4770k. Dont have experience oc'ing gpu's so I probably wouldnt. All the benchmarks for oc'd 290x's that ive seen only shower 1-2 fps improvement? 

it would be pushing the psu with an i7 and 2x290X's. you would have about 50w of headroom off maximum load. you could run it for a while if you wanted, but i wouldn't keep it as a permanent solution. i think an 850 or 1000w would be more suitable.

Rig Specs:

AMD Threadripper 5990WX@4.8Ghz

Asus Zenith III Extreme

Asrock OC Formula 7970XTX Quadfire

G.Skill Ripheartout X OC 7000Mhz C28 DDR5 4X16GB  

Super Flower Power Leadex 2000W Psu's X2

Harrynowl's 775/771 OC and mod guide: http://linustechtips.com/main/topic/232325-lga775-core2duo-core2quad-overclocking-guide/ http://linustechtips.com/main/topic/365998-mod-lga771-to-lga775-cpu-modification-tutorial/

ProKoN haswell/DC OC guide: http://linustechtips.com/main/topic/41234-intel-haswell-4670k-4770k-overclocking-guide/

 

"desperate for just a bit more money to watercool, the titan x would be thankful" Carter -2016

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i7 4770k. Dont have experience oc'ing gpu's so I probably wouldnt. All the benchmarks for oc'd 290x's that ive seen only shower 1-2 fps improvement? 

You can do it. With ease. Both overclocking and running it. Overclocking a GPU is so easy a toddler could do it. 

Also you can get an extra 15% of power with ease. 
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I would want to be using more than 750w OCing my GPU'S/CPU's

Intel I9-9900k (5Ghz) | Asus ROG Maximus XI Formula | Corsair Vengeance 16GB DDR4-4133mhz | ASUS ROG Strix 2080Ti | EVGA Supernova G2 1050w 80+Gold | Samsung 950 Pro M.2 (512GB) + (1TB) | Full EK custom water loop |IN-WIN S-Frame (No. 263/500)

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its fine they said, you can oc they said. Jokes you'll be fine. 

My Little Gaming Rig:

CPU: FX 8320 | MOBO: Gigabyte 970A-D3P | RAM: G.Skill Ares 2x4GB | GPU: Sapphire Dual-X R9 270X | Storage: Seagate SSHD 1TB | Case: Corsair 200R | PSU: CM 550W V-Series

Upgrades to come: CPU FAN: Corsair H100i | RAM: 2 more 4GB sticks | GPU: Another R9 270X running in crossfire | Storage: Samsung 120GB SSD | PSU: Corsair 800w

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http://extreme.outervision.com/psucalculatorlite.jsp

 

Choose the gear you want and see what it comes out to. I plugged in some quick numbers and it looks close, but within the range for a first rate 750W PSU. I'd likely go for an 850W for more headroom, but sometimes you just have to use what you've got.

Are you threatening me?!

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I'd go for 850 watts to be safe. Before you do try if it works with your current one though, if it does no reason to upgrade.

Don't ask to ask, just ask... please 🤨

sudo chmod -R 000 /*

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Yes you would. The minimum PSU requirement for a single 290X is 750W. Gigabyte might suggest 600W, but all the other OEMs are saying 750W. And considering that the 290X has a 290W TDP I would say the safe spot for crossfiring two of those would be 1000W. 

My PC: CPU: Intel Core i3 3220, MB: ASUS P8P67 LE, GPU: Palit Jetstream GTX 670, RAM: 4GB 1333mhz DDR3, Storage: 750GB Hitachi, PSU: CoolerMaster G650M 80+ Bronze, Cooling: Coolermaster Hyper 212 Plus, Case: Multirama, Display: Acer x229w 22" 1680x1050, Keyboard: Logitech K120, Mouse: Steelseries Kinzu v2, Sound: Logitech 2.1 system

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From my water cooling thread: http://linustechtips.com/main/topic/167195-water-cooling-r9-290-crossfire/

 

gallery_53134_1481_57485.png

 

You won't have much room with 750W...

CPU: Intel i7 3970X @ 4.7 GHz  (custom loop)   RAM: Kingston 1866 MHz 32GB DDR3   GPU(s): 2x Gigabyte R9 290OC (custom loop)   Motherboard: Asus P9X79   

Case: Fractal Design R3    Cooling loop:  360 mm + 480 mm + 1080 mm,  tripple 5D Vario pump   Storage: 500 GB + 240 GB + 120 GB SSD,  Seagate 4 TB HDD

PSU: Corsair AX860i   Display(s): Asus PB278Q,  Asus VE247H   Input: QPad 5K,  Logitech G710+    Sound: uDAC3 + Philips Fidelio x2

HWBot: http://hwbot.org/user/tame/

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