This is my build.

[rajekaje]

Hello,I'm trying to figure out of this power supply for my build will be enough to cover the future upgrade of SLI on my video card or if I need to go bigger.


Part list permalink / Part price breakdown by merchant

CPU: Intel Core i5-2500K 3.3GHz Quad-Core Processor ($214.99 @ SuperBiiz)
CPU Cooler: Cooler Master RR-B10-212P-G1 76.8 CFM Sleeve Bearing CPU Cooler ($24.99 @ SuperBiiz)
Motherboard: ASRock P67 Extreme 4 (B3) ATX LGA1155 Motherboard ($158.49 @ Newegg)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($47.99 @ Amazon)
Hard Drive: Western Digital Caviar Black 1TB 3.5" 7200RPM Internal Hard Drive ($79.99 @ Amazon)
Video Card: EVGA GeForce GTX 580 3GB Video Card ($569.99 @ Amazon)
Case: Antec DF-10 ATX Mid Tower Case ($40.99 @ SuperBiiz)
Power Supply: Corsair 850W ATX12V / EPS12V Power Supply ($183.99 @ Amazon)
Optical Drive: Asus BC-12B1ST/BLK/B/AS Blu-Ray Reader, DVD/CD Writer ($64.94 @ Wolf Camera)
Monitor: Asus ML238H 23.0" Monitor ($168.99 @ SuperBiiz)
Operating System: Microsoft Windows 7 Home Premium SP1 (64-bit) ($99.99 @ Newegg)
Total: $1655.34
(Prices include shipping and discounts when available.)
(Generated 2011-09-27 01:32 EDT-0400)

 

[pckitty4427]

850W won't be enough for 2 GTX 580s. Use this calculator: http://support.asus.com/powersupply.aspx

 

[AdrianPerry]

900w-1000w is recommended for SLI 580's. 1000w if you plan on doing some CPU and GPU overclocking.

Recommended manufacturers include: XFX, Corsair, SeaSonic, Antec.

 

[Why_Me]

You don't want a 3GB card for a single monitor set up. The extra VRAM will actually hurt you in FPS due to latency. That card is for a multiple monitor set up. Also as others have pointed out you want a psu with more amps and watts...and that Antec case pretty much sucks. Look at a Cooler Master or Corsair mid tower. They run from $95 to $80.

http://www.newegg.com/Product/Product.aspx?Item=N82E16813157265 $154.99
ASRock P67 EXTREME4 GEN3 LGA 1155 Intel P67 SATA 6Gb/s USB 3.0 ATX Intel Motherboard

http://www.asrock.com/microsite/PCIe3/ <----- PCI-E 3.0

http://www.asrock.com/mb/overview.us.asp?Model=P67%20Extreme4%20Gen3 <---- another look at that gen3 board

http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.732099 $683.98 - $35.00 Mail In Rebates
CORSAIR Professional Series HX1050 1050W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS SILVER Certified Modular Power Supply
MSI N580GTX Twin Frozr II/OC GeForce GTX 580 (Fermi) 1536MB 384-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

or...

http://www.newegg.com/Product/Product.aspx?Item=N82E16817341045 $199.99 - $169.99 after mail-in rebate card FREE SHIPPING 10% off with promo code OCZSEPSAVING, ends 9/30
OCZ ZX Series 1000W Fully-Modular 80PLUS Gold High Performance Power Supply compatible with Intel Sandybridge Core i3 i5 i7 and AMD Phenom

or this one manufactured by Enermax for LEPA... it has 6 more amps and 50 more watts than that Corsair 850.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817194083 $179.99 - $129.99 after mail-in rebate card
LEPA G900-MA 900W SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply

http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.723046 $304.98 FREE SHIPPING
Microsoft Windows 7 Home Premium SP1 64-bit - OEM
Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor BX80623I52500K

http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.696141 $67.48 $5 off w/ promo code EMCKAHH23, ends 9/28
ASUS DRW-24B1ST/BLK/B/AS Black SATA 24X DVD Burner - Bulk - OEM
Seagate Barracuda ST31000524AS 1TB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive

http://www.amazon.com/Corsair-Carbide-Tower-Gaming-Computer/dp/B0055Q7BR4 $99.99 & this item ships for FREE with Super Saver Shipping
Corsair Carbide Series 400R Mid Tower Gaming Computer Case - CC-9011011-WW

 

[rajekaje]

I am thinking about throwing a second monitor to my build. Should I stick with the 3 gb for that?

 

[Why_Me]

I am thinking about throwing a second monitor to my build. Should I stick with the 3 gb for that?

Nope, it will still be over kill. 3GB card for a tri monitor set up.

 

[mjmjpfaff]

Nope, it will still be over kill. 3GB card for a tri monitor set up.

+1

another psu that sill run 2 580's is the PC Power and Cooling 950w PSU- http://www.newegg.com/Product/Product.aspx?Item=N82E16817703028 a whopping 7yr warranty, silver rated and a very good deal at 150$

the corsair 400r is a great choice for your case.

here is a better cpu cooler- http://www.newegg.com/Product/Product.aspx?Item=N82E16835103099&Tpk=hyper%20212%20evo

and ram since that corsair raised its price- http://www.newegg.com/Product/Product.aspx?Item=N82E16820231416 50$

and change your hdd to a samsung f3 1tb it is faster an cheaper.

 

[rajekaje]

So what video card do you guys suggest ? I'm looking to play bf3 at a great fps in 1920x1080 with graphics cranked.

 

[Why_Me]

So what video card do you guys suggest ? I'm looking to play bf3 at a great fps in 1920x1080 with graphics cranked.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814127567 $499.99 - $474.99 after mail-in rebate card FREE SHIPPING
MSI N580GTX Twin Frozr II/OC GeForce GTX 580 (Fermi) 1536MB 384-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

or...

http://www.newegg.com/Product/Product.aspx?Item=N82E16814127579 $524.99 - $499.99 after mail-in rebate card FREE SHIPPING
MSI N580GTX Lightning GeForce GTX 580 (Fermi) 1536MB 384-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

http://www.newegg.com/Product/Product.aspx?Item=N82E16813157265 $154.99
ASRock P67 EXTREME4 GEN3 LGA 1155 Intel P67 SATA 6Gb/s USB 3.0 ATX Intel Motherboard