power supply Beefy enough?

[Fancyland]

Hello fellow techtippers,

 

I've added a second graphics card to my desktop a while ago, but I'm starting to wonder if my PSU is beefy enough to run it all.

I haven't had any crashes, but my PC does behave weird sometimes. Especially the input devices; lag or electric sounds from the headset.

 

My PC has:
i7-6800k overclocked to 4.3 GHz with I think it was ~1.4V (I plan on downclocking it a bit, because it tends to run hot in BF1 or when I'm exporting in Premiere and such)

R9 290x and r9 290 in crossfire

1TB sata SSD and a 2TB WD black

and everything is powered by a 

Seasonic X-850

 

I tried to recreate it in partpicker as best as I could:

Link

 

According to the Cooler Mater psu calculator I need atleast 1000watts.

 

PCPartPicker part list / Price breakdown by merchant                      

CPU: Intel Core i7-6800K 3.4GHz 6-Core Processor
CPU Cooler: Scythe Mugen 4 79.0 CFM CPU Cooler
Motherboard: MSI X99A SLI PLUS ATX LGA2011-3 Motherboard
Memory: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-3200 Memory
Storage: Samsung 850 EVO-Series 1TB 2.5" Solid State Drive 
Storage: Western Digital Caviar Black 2TB 3.5" 7200RPM Internal Hard Drive
Video Card: Sapphire Radeon R9 290X 4GB Tri-X Video Card (2-Way CrossFire) 
Video Card: Sapphire Radeon R9 290X 4GB Tri-X Video Card (2-Way CrossFire) 
Case: Cooler Master Storm Sniper ATX Mid Tower Case
Power Supply: SeaSonic X Series 850W 80+ Gold Certified Fully-Modular ATX Power Supply
Optical Drive: LG GH24NSC0 DVD/CD Writer 
Operating System: Microsoft Windows 10 Pro OEM 64-bit
Monitor: Samsung P2370HD 23.0" 60Hz Monitor 
Monitor: Samsung P2370HD 23.0" 60Hz Monitor 
Keyboard: Logitech G510 Wired Gaming Keyboard 
Mouse: Logitech G700s Wireless Laser Mouse 
Headphones: Logitech G930 7.1 Channel  Headset 
Generated by PCPartPicker 2016-11-29 04:21 EST-0500

[GeorgeKellow]

pc part picker has wattage calculator

 

edit- the psu might not provide enough wattage (Its 14w over ) 

[Fancyland]

2 minutes ago, GeorgeKellow said:

pc part picker has wattage calculator

True, it says 864 watts. But It does not calculate for the oc or the fact that I don't have 2 290x but a 290 and a 290x in my setup.

 

[GeorgeKellow]

5 minutes ago, Fancyland said:

True, it says 864 watts. But It does not calculate for the oc or the fact that I don't have 2 290x but a 290 and a 290x in my setup.

 

go for a higher wattage psu

[Fancyland]

1 minute ago, GeorgeKellow said:

go for a higher wattage psu

I guess you're right. But I'm a bit hesitant, because I don't have the money just laying around.

'Till the time I do have the money, I'll take out one of my R9's

 

What are the risks of running an under powered psu for too long?

[GeorgeKellow]

Just now, Fancyland said:

I guess you're right. But I'm a bit hesitant, because I don't have the money just laying around.

'Till the time I do have the money, I'll take out one of my R9's

 

What are the risks of running an under powered psu for too long?

A it might not work 

B cause wear on your components 

c psu life span will be decreased

[STRMfrmXMN]

8 hours ago, GeorgeKellow said:

go for a higher wattage psu

Nah

 

8 hours ago, Fancyland said:

Hello fellow techtippers,

 

I've added a second graphics card to my desktop a while ago, but I'm starting to wonder if my PSU is beefy enough to run it all.

I haven't had any crashes, but my PC does behave weird sometimes. Especially the input devices; lag or electric sounds from the headset.

 

My PC has:
i7-6800k overclocked to 4.3 GHz with I think it was ~1.4V (I plan on downclocking it a bit, because it tends to run hot in BF1 or when I'm exporting in Premiere and such)

R9 290x and r9 290 in crossfire

1TB sata SSD and a 2TB WD black

and everything is powered by a 

Seasonic X-850

 

I tried to recreate it in partpicker as best as I could:

Link

 

According to the Cooler Mater psu calculator I need atleast 1000watts.

 

PCPartPicker part list / Price breakdown by merchant                      

CPU: Intel Core i7-6800K 3.4GHz 6-Core Processor
CPU Cooler: Scythe Mugen 4 79.0 CFM CPU Cooler
Motherboard: MSI X99A SLI PLUS ATX LGA2011-3 Motherboard
Memory: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-3200 Memory
Storage: Samsung 850 EVO-Series 1TB 2.5" Solid State Drive 
Storage: Western Digital Caviar Black 2TB 3.5" 7200RPM Internal Hard Drive
Video Card: Sapphire Radeon R9 290X 4GB Tri-X Video Card (2-Way CrossFire) 
Video Card: Sapphire Radeon R9 290X 4GB Tri-X Video Card (2-Way CrossFire) 
Case: Cooler Master Storm Sniper ATX Mid Tower Case
Power Supply: SeaSonic X Series 850W 80+ Gold Certified Fully-Modular ATX Power Supply
Optical Drive: LG GH24NSC0 DVD/CD Writer 
Operating System: Microsoft Windows 10 Pro OEM 64-bit
Monitor: Samsung P2370HD 23.0" 60Hz Monitor 
Monitor: Samsung P2370HD 23.0" 60Hz Monitor 
Keyboard: Logitech G510 Wired Gaming Keyboard 
Mouse: Logitech G700s Wireless Laser Mouse 
Headphones: Logitech G930 7.1 Channel  Headset 
Generated by PCPartPicker 2016-11-29 04:21 EST-0500

Two 290Xs in Crossfire (essentially what you have) would probably be hitting about 800W with your overclocked 6800k. Guru3D found that a single 290X used about 284W under load so add a bit for whatever overclocking you're somehow squeezing out of that thing and you're probably using about 640W-ish for the two cards. Add like 130W for the CPU and you're getting up there. I'd still say you're completely fine, however. The Seasonic you have is a top-notch unit.