Crossfire PSU problem.

Manteray · Sep 13, 2016

Ok My build:
Amd FX-8350 OC'd @ 4.3Ghz
Corsair Hydro H80 cpu cooler.
Sabertooth 99FX R2.0
Corsair Vengeance Pro series 1600mhz = 2x8gb
Kingston 120GB SSDNow V300 2.5inch(O.S)
Seagate SSHD hybrid 1tb hard drive.
Sapphire dual-x R9 270x 2gb
Zallman Z9 plus PC case with 4 x 120mm fans included.
Powercool 750w 80+ semi modular PSU 54amps(brand new today).
1 x BenQ G2222HDL.

Ok now that's all out of the way, here comes the big question:
I have just purchased a 2nd Sapphire dual-x R9 270x graphics card, and i need to know if my PSU will handle 2 cards or do i need to go bigger, i have seen 100's of youtube tests/benchmarks with crossfire R9 270x and the PSU varies from 650-750w, in some instances 1000w+ for multi monitors set-ups.
So will my PSU run another card, the PSU comes with 2 x 6+2 pci-e and another 2 x 6 pin sockets available(cables not included). in Theory it is sli/crossfire ready it say's.

Any help in this matter would be appreciated as i dont want to plug a gpu in and blow things up(mainly the PSU).

Regards.
manteray.

Barty1884 · Sep 13, 2016

I would return that PSU shaped object while you still can.
http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html

While wattage-wise, the PSU should be fine - it's quality is lacking. What you essentially have is a PSU-shaped waste of money. I wouldn't run anything from it.

Tier Five
Avoid IMMEDIATELY. These units are highly unsafe to use. No such protections added, very thin gauge wiring used, false advertising and too much to list. Reference to a higher tiered unit for a better, money saving and a much safer unit. For your safety's sake, please don't order or pick one up for use in your system. These units are a potential fire hazard and could even kill you, let alone your system.

Powercool

That rig can pull a theoretical max in the ~600W range (at stock speeds). Adding an OC to your CPU, you're increasing the power requirements. A quality 750W PSU can do it (although I'd recommend a quality 850W), but a junk PSU likely won't.

You have a 750W PSU with 54A on the 12V rail? If so, that's more akin to a 650W PSU. Add to that the poor quality and minimal (at best) protection, it's just not worth the risk.

Where are you located?

If you're in the US, the EVGA SuperNOVA B2 850W @ $88 is a good deal, for a quality PSU.
Bronze, and semi-modular.
https://pcpartpicker.com/product/29xfrH/evga-power-supply-110b20850v1

Decent 'budget friendly' alternatives all come in right around $90 also.

Antec High Current Gamer -@ $91 (bronze, semi-modular)
https://pcpartpicker.com/product/2VMFf7/antec-power-supply-hcg850m

Rosewill Capstone G850 @ $95 (gold efficiency, still semi-modular)
https://pcpartpicker.com/product/hRJkcf/rosewill-power-supply-capstoneg850

Manteray · Sep 14, 2016

Barty1884 :

I would return that PSU shaped object while you still can.
http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html

While wattage-wise, the PSU should be fine - it's quality is lacking. What you essentially have is a PSU-shaped waste of money. I wouldn't run anything from it.

Tier Five
Avoid IMMEDIATELY. These units are highly unsafe to use. No such protections added, very thin gauge wiring used, false advertising and too much to list. Reference to a higher tiered unit for a better, money saving and a much safer unit. For your safety's sake, please don't order or pick one up for use in your system. These units are a potential fire hazard and could even kill you, let alone your system.

Powercool

That rig can pull a theoretical max in the ~600W range (at stock speeds). Adding an OC to your CPU, you're increasing the power requirements. A quality 750W PSU can do it (although I'd recommend a quality 850W), but a junk PSU likely won't.

You have a 750W PSU with 54A on the 12V rail? If so, that's more akin to a 650W PSU. Add to that the poor quality and minimal (at best) protection, it's just not worth the risk.

Where are you located?

If you're in the US, the EVGA SuperNOVA B2 850W @ $88 is a good deal, for a quality PSU.
Bronze, and semi-modular.
https://pcpartpicker.com/product/29xfrH/evga-power-supply-110b20850v1

Decent 'budget friendly' alternatives all come in right around $90 also.

Antec High Current Gamer -@ $91 (bronze, semi-modular)
https://pcpartpicker.com/product/2VMFf7/antec-power-supply-hcg850m

Rosewill Capstone G850 @ $95 (gold efficiency, still semi-modular)
https://pcpartpicker.com/product/hRJkcf/rosewill-power-supply-capstoneg850

Ty for a fast response, i didnt think the PSU was upto shit, im from the UK.
I decided to return the PSU and replace it with the Rosewill Capstone G850 at £95 new from Ebay.

I didnt think my psu was capable hence why i asked the question.

Many thanks for your help.
regards
manteray.

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Crossfire PSU problem.

Manteray

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Barty1884

Barty1884

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Manteray

Commendable

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