Will this PSU be enough ?

[T3chmaN]

Hi!

I have a couple of new parts coming my way, and wanted to ask if the spare PSU I have will be enough to power it up without problems - it's a Corsair CX750M.

The specification is as follows:
- i7 4790k
- Asus z97 Pro gamer
- 2x R9 280x
- 4x2GB DDR3 HyperX Ram 1600Mhz
- Agility 3 SSD
- 4x WD Black 500 GB HDD

Thank You in Advance

Cheers!

 

[ShameGame]

I think it would be enough

 

[EagleDesignInc]

see below

 

[bignastyid]

I wouldn't suggest it. 750w is cutting it close and with the CX's capacitors issues. It would run it but I'd give it a month or 2 before it died. For 2 280xs I would suggest using a good 850w PSU. Depending on what exact model of card you are using a 280x can pull 250-300w by itself.

 

[T3chmaN]

I'm using Club 3D R9 280X Royal Queen 3GB GDDR5 1000/6000, without any overclocks - that "month or 2 before it died" got me worried thou :/

 

[Deleted member 217926]

It is certainly not a good power supply.

It joins the RM 750 in being the only Corsair units to fail testing.

http://www.hardocp.com/article/2015/01/21/corsair_cx750_750w_power_supply_review/9#.VO8kBYJIs1I

Avoid it. Especially with a high drain multiple GPU setup. And even more especially when it does not meet the recommended requirements for Crossfire 280X cards.

http://www.realhardtechx.com/index_archivos/Page362.htm

 

[holyrage]

yes it will run but i wont Overclock coz the CX doesn't have very good capacitors how ever it wont die in 2 months lol i would give it a year at least

the 7970/R9280X with Tahiti XT will pull around 400~ ish watts in crossfire

the R9 280X with Tahiti XTL should pull around 380~ ish in Xfire so yah you should be fine pretty much lol

 

[EagleDesignInc]

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($319.99 @ Amazon)
Motherboard: Asus Z97 PRO GAMER ATX LGA1150 Motherboard ($163.98 @ Newegg)
Memory: Kingston HyperX 8GB (4 x 2GB) DDR3-1600 Memory
Storage: OCZ Agility 3 60GB 2.5" Solid State Drive ($71.44 @ Amazon)
Storage: Western Digital Caviar Black 500GB 3.5" 7200RPM Internal Hard Drive ($64.95 @ SuperBiiz)
Storage: Western Digital Caviar Black 500GB 3.5" 7200RPM Internal Hard Drive ($64.95 @ SuperBiiz)
Storage: Western Digital Caviar Black 500GB 3.5" 7200RPM Internal Hard Drive ($64.95 @ SuperBiiz)
Storage: Western Digital Caviar Black 500GB 3.5" 7200RPM Internal Hard Drive ($64.95 @ SuperBiiz)
Video Card: XFX Radeon R9 280X 3GB Black Edition Double Dissipation Video Card (2-Way CrossFire) ($239.99 @ NCIX US)
Video Card: XFX Radeon R9 280X 3GB Black Edition Double Dissipation Video Card (2-Way CrossFire) ($239.99 @ NCIX US)

Estimated Wattage: 753W

You are pushing the limit of your PSU, with the fans and CD-Rom you should upgrade the PSU also just to be safe...

 

[nucolos]

I wouldnt recommend it either, you will push any 750w psu with 2 280x, trust me, i have them, i was in the same problem than you, you need either a really good 750w psu, or an average 850w. Recommended, and not expensive, 750w psu's would be the XFX xtr or EVGA g2.

 

[bignastyid]

I'm using Club 3D R9 280X Royal Queen 3GB GDDR5 1000/6000, without any overclocks - that "month or 2 before it died" got me worried thou :/

Club 3D recommends a 750w PSU for just 1 of them, which imho is a bit excessive if you use a quality unit. They note a max power usage of 280w. I would suggest using a 850w unit(or larger). Get something from Seasonic, XFX, Antec, SuperFlower EVGA B2 and G2 s are good aswell. With Corsair you need to stick with their higher end units like the HX(i) and AX(i) and those are usually rather expensive.

 

[Deleted member 217926]

You can trust the RealhardTechX site's recommendations. They maintain the most comprehensive power supply database on the internet.

Bignastyid is also correct in that a single 280X can pull a full 300 watts all by itself in certain circumstances. Generally that involves Furmark and Furmark is a bad idea for any card but the capability is there and it would only take a single bad driver for the card to say start pulling that in Crysis 3 or FC 4 or another high end game. Nvidia and AMD have both had a history of such drivers in the past.

 

[T3chmaN]

Thank You for all the answers

Ehhh... I will try to run this with one 280x to see if the new parts are working, and will try to get a better PSU - any cheap recommendations ? 😀

 

[Deleted member 217926]

See the tier list in my sig. Stay with tier 2 and up.

 

[bignastyid]

This is the cheapest I'd go for
http://pcpartpicker.com/part/evga-power-supply-110b20850v1
For $20 more you can get better effciency and fully modular rather that just semi.
http://pcpartpicker.com/part/xfx-power-supply-p1850bbefx
or
http://pcpartpicker.com/part/evga-power-supply-220g20850xr

 

[nucolos]

Thank You for all the answers

Ehhh... I will try to run this with one 280x to see if the new parts are working, and will try to get a better PSU - any cheap recommendations ? 😀

Wouldnt recommend anything cheaper
http://pcpartpicker.com/part/evga-power-supply-110b20850v1

 

[EagleDesignInc]

Thank You for all the answers

Ehhh... I will try to run this with one 280x to see if the new parts are working, and will try to get a better PSU - any cheap recommendations ? 😀

EVGA SuperNOVA 850 B2 850W 80 Plus Bronze Power Supply w/ 5 Yr Warranty $79.99 After $20 Mail-In Rebate
http://www.ncixus.com/products/?usaffiliateid=1000031504&sku=98820&vpn=110-B2-0850-V1&manufacture=eVGA&promoid=1139

 

[T3chmaN]

I think I will get the http://pcpartpicker.com/part/xfx-power-supply-p1850bbefx ,or I found this one for 30$ more than the XFX http://pcpartpicker.com/part/evga-power-supply-120g21000xr

For some strange reason the http://pcpartpicker.com/part/evga-power-supply-220g20850xr is priced 100$ more than the XFX in my country, and 70$ more than the EVGA SuperNOVA 1000G2 - or is the 1000G2 cheaper because it's faulty ?

 

[bignastyid]

All the Evga G2 units are good.

 

[T3chmaN]

Great - Thank You 😀 I will go with the 1000G2, 30$ more is not much for being a bit more future proof