PSU Help Desperately Needed! :(

edd677 · Dec 27, 2013

Dear all,

I am in the process of building the following PC: http://uk.pcpartpicker.com/p/2qOAw

I cannot decide which PSU to go for. I am not sure I need such a powerful PSU, or whether a 650W would be enough.

The GPU I am buying will be the Sapphire R9 290 Tri-X or the MSI R9 290 Twin Frozr.

These are the two power supplies I am currently looking at:

1.http://www.amazon.co.uk/EVGA-SuperNOVA-NEX650G-Fully-Modular/dp/B00A03LW54/ref=sr_1_4?s=computers&ie=UTF8&qid=1388174881&sr=1-4

2.http://www.aria.co.uk/Products/Components/Power+Supplies/Modular+700-950W/750W+XFX+Pro+Black+Edition+80PLUS+Gold+Modular+Power+Supply+%5BP1-750B-BEFX%5D+?productId=54052

Which would you recommend? If the XFX is recommended, please provide justification for the increased cost.

Ideally I wish to spend as little as possible, without comprimising too much on quality. Less than £100 is essential.

Thank you

EDIT: I need the power supply to be fully modular for ease of use in my chosen case (BitFenix Prodigy ITX). Furthermore, it cannot be more than 160mm long!

Thanks!

Shwerfy · Dec 27, 2013

You don't need 750W for a single GPU build.
750W would only be used if you plan on using CrossFire.
That said, I would go with the Corsair cx750. It's a reliable company, more than enough Watts, leaves you plenty of room to overclock and upgrade, and only £67
http://uk.pcpartpicker.com/part/corsair-power-supply-cx750

Carobthomp · Dec 27, 2013

To be completely honest, I know it looks prettier on the inside, but modular PSU's aren't really the best to go for if you are building a gaming rig. Especially if you are going pretty far out for other parts, it might be better to look into a semi-modular PSU or a non modular PSU, because there is a small loss of power with modular PSU's. Even if it has bronze, it will give you what you need. I couldn't tell you specifically the part, but I would also look at your non-modular/semi-modular options.

filippi · Dec 27, 2013

Check out this platinum Antec PSU:

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: Antec EarthWatts Platinum 650W 80+ Platinum Certified ATX Power Supply (£85.31 @ Amazon UK)
Total: £85.31
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-12-27 21:04 GMT+0000)

FALC0N · Dec 27, 2013

All option presented so far are quality choices.

edd677 · Dec 27, 2013

Shwerfy :

Hey,

Thank you very much for your response.

I actually need a modular power supply for the case I have set my eyes on, and it cannot be deeper than 160mm.

Would the modular version of the power supply you kindly suggested be as good?

Here is the link: http://www.amazon.co.uk/Corsair-Builder-Series-Modular-Certified/dp/B00ALK3QRS/ref=pd_cp_computers_0

Thank you!

ko888 · Dec 27, 2013

Why are you getting 1.65V Memory Modules ? You should be getting 1.5V or lower memory modules.

edd677 · Dec 27, 2013

ko888 :

Hi there,

Thank you for your help - I have been told there would be no issues with this memory and my system - is this not the case?

Thank you!

Shwerfy · Dec 27, 2013

edd677 :

Shwerfy :

Hey,

Thank you very much for your response.

I actually need a modular power supply for the case I have set my eyes on, and it cannot be deeper than 160mm.

Would the modular version of the power supply you kindly suggested be as good?

Here is the link: http://www.amazon.co.uk/Corsair-Builder-Series-Modular-Certified/dp/B00ALK3QRS/ref=pd_cp_computers_0

Thank you!

Yeah, it would be fine. Corsair is a reliable company.

edd677 · Dec 27, 2013

filippi :

Unfortunately I need a modular power supply for the case I have chosen (BitFenix Prodigy ITX), and one that is less than 160mm in length.

ko888 · Dec 27, 2013

edd677 :

You shouldn't run into any problems if the voltage values programmed into the memory module's SPD table entries is 1.5V or lower.

edd677 · Dec 27, 2013

ko888 :

Why would I need to though? Many threads such as this one: http://www.tomshardware.co.uk/answers/id-1806396/ram-intel-core-4770k.html have people saying that it is absolutely fine to run 1.65v with the 4770k?

I very much appreciate your feedback!

ko888 · Dec 27, 2013

edd677 :

If the memory controller on the CPU gets destroyed by the excess voltage then you'll have to eat the cost for a new CPU.

Just because other people do it, it doesn't mean it's the prudent thing to do.

What kind of a performance gain are you expecting with real world usage when overclocking this memory?

edd677 · Dec 28, 2013

ko888 :

Ok great, thanks.

How about these? http://www.amazon.co.uk/gp/product/B0069OG1RM/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=A3P5ROKL5A1OLE

Low price, bandwidth of 1866, CAS of 9, and a voltage of 1.5v

Thank you!

ko888 · Dec 28, 2013

edd677 :

Those will work fine.

All voltages in the SPD table are within Intel's spec:

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PSU Help Desperately Needed! :(

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Shwerfy

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filippi

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FALC0N

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edd677

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ko888

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edd677

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Shwerfy

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edd677

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