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Power Supply Query (Graphics Card Options)

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  • Gaming
  • Power Supplies
  • Graphics Cards
  • Graphics
Last response: in Graphics Cards
November 25, 2013 3:08:21 PM

Hi all, I'm hoping someone can confirm/clarify something for me....

I am currently building a new gaming PC, specs are:

CPU: Intel i5 4670K
--Cooling: Coolermaster Hyper 212 Evo
RAM: Corsair Vengeance Pro (16GB / 2x8GB DDR3 2133Mhz)
Mobo: Asus Maximus VI HERO Z87
GFX: Asus R9 280X DirectCU II TOP
..or..
Sapphire R9 280X TOXIC

At present, I have an Antec 650w (http://www.scan.co.uk/products/650w-psu-antec-truepower...). Ideally, I would like to keep this PSU with my planned upgrades? It seems the Sapphire Toxic is a lot more power hungry than the Asus CUII TOP?

Once the PC is built, I will probably tweek a few bits but I won't be OC'ing crazily and I don't intend to CrossFire, I'll be fine with just the one card. If I were to upgrade my PSU, it would be to this (http://www.ebuyer.com/265709-ocz-zx-series-850w-80-gold...), but obviously I'd prefer to save the £127!

If I can't keep my PSU and need to upgrade... my next question would be Toxic vs CUII TOP?!

Any advice will be greatly appreciated!

Cheers

More about : power supply query graphics card options

a c 945 U Graphics card
a c 444 ) Power supply
a c 339 4 Gaming
November 25, 2013 3:17:18 PM

Both your existing PSU and your upgrade choice are solid. Your 650W Antec is adequate for the R9-280X and other system components and even has the necessary 2 x 8 pin PCIE connectors.
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November 25, 2013 3:27:46 PM

clutchc said:
Both your existing PSU and your upgrade choice are solid. Your 650W Antec is adequate for the R9-280X and other system components and even has the necessary 2 x 8 pin PCIE connectors.


Thanks for such a quick reply!

Typically, I've just been looking on the scan website and noticed something... the upgrade OCZ ZX 850w PSU is "Haswell Ready (Supports C6/C7 Power States)".. my current Antec 650w is not? I'm upgrading to Haswell so..??
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November 26, 2013 4:31:18 AM



Ah! Well that is weird, my PSU is: Antec Truepower 650 (Model: TP-650)

According to that list I should be ok!! I wonder why Scan have it listed as non-supported?!

So will my TP-650 be ok with the rest of my proposed build? Or would you recommend upgrading to an 850w?
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Best solution

a c 945 U Graphics card
a c 444 ) Power supply
a c 339 4 Gaming
November 26, 2013 8:07:40 AM

Is this the same PSU that you have? http://www.newegg.com/Product/Product.aspx?Item=N82E168...

According to the specs on that PSU, it has 2 x 22A +12V rails and 2 x 25A +12V rails, but they are limited to 54A total, not 94A as you would expect by combining them. Still, the Processor is only an 84W CPU (max) at stock speed, and the card is rated at 300W TDP at stock speed. http://www.hwcompare.com/16010/radeon-r9-290x/
Those are the most demanding items on the +12V rail and total 32A load @ +12V. Well within the specs for your PSU. Drives, fans, etc. will be a small addition to that. The PSU appears to have the necessary PCIe connectors. So unless you want to plan for future upgrades like adding a 2nd card, the PSU should be quite fine.
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