Which PSU is better

inputoutput · Apr 28, 2014

Hello Internet

Simple question, which PSU you is better, the XFX P1-750X-XXB9 or the Corsair RM 650W . By better I mean build quality, quietness and overall performance.

Thanks for you help In advance.

Gutlesswolverine · Apr 28, 2014

Go with the xfx one.

Suztera · Apr 28, 2014

See if you can find a XFX XTR 650W, they similar to Rm650 but seasonic standard

Danbuscus25 · Apr 28, 2014

the XFX 750

tiny voices · Apr 28, 2014

The XFX is better. The RM units use the same junk capacitors used in the CX line. I do not recommend the RM units.

inputoutput · Apr 28, 2014

tiny voices :

What do you mean by 'junk capacitors'

tiny voices · Apr 28, 2014

The CX, CS (not 650w), and RM units from Corsair all share the same low quality capacitors that fail easily when subjected to any real amount of heat. This is why we generally don't recommend these units.

inputoutput · Apr 28, 2014

tiny voices :

So is there something different about the 650w then?

tiny voices · Apr 28, 2014

The 650w CSM PSU by Corsair is made with a different OEM than the others in the line. It is quality. It is also WAY more expensive than other equal quality 650w units so generally people don't but it either.

XFX is king of the market really. All of their units are just Seasonic PSUs with a different sticker on them and sold for less. AMAZING quality for value.

inputoutput · Apr 28, 2014

tiny voices :

I can get the CS650M for £65. Is that any good?

tiny voices · Apr 28, 2014

If you can get an XFX650 for the same or less I would just do that.

tiny voices · Apr 28, 2014

http://uk.pcpartpicker.com/part/xfx-power-supply-p1550sxxb9 Here is the 550 for 46.

What parts are you powering? Chances are you do not need 650w.

inputoutput · Apr 28, 2014

tiny voices :

I agree not at the moment anyway. I will soon though as I will be adding another GPU, 2 more RAM sticks and 1 ssd.

The parts atm:

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor (£155.99 @ Aria PC)
CPU Cooler: Corsair H80i 77.0 CFM Liquid CPU Cooler (£69.99 @ Amazon UK)
Motherboard: MSI Z87-G45 Gaming ATX LGA1150 Motherboard (£98.35 @ CCL Computers)
Memory: Corsair Vengeance Pro 8GB (2 x 4GB) DDR3-1600 Memory (£62.90 @ Ebuyer)
Video Card: MSI GeForce GTX 760 2GB TWIN FROZR Video Card (£169.97 @ Aria PC)
Case: Corsair SPEC-03 Red ATX Mid Tower Case (£45.95 @ CCL Computers)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer (£11.69 @ CCL Computers)
Total: £614.84
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-04-28 19:13 BST+0100)

There's 1 Hard drive too

tiny voices · Apr 28, 2014

You have no need for more RAM as it will not give ANY aditional gaming performance at all.

IF you are going to SLI the 760s, 650-700w will be great. You NEED a PSU that has 4 GPU power connectors though, Many 650w models do not.

An SSD uses 0 power at all and RAM uses no power really either. Neither will add more than 5w to the system.

How soon do you plan to buy another 760?

Danbuscus25 · Apr 28, 2014

make sure that the applications and programs you run can fully utilize sli, and if not then it would be better to either just keep the 1 760 or sell it and buy a 780(Ti) or 290. not much point going from a 760 to a 770 though, not much upgrade.

inputoutput · Apr 28, 2014

tiny voices :

Okay cool I wont get any more RAM then. I plan to get the GPU about 2 weeks. And How much power would a safe OC need for the CPU and GPU's

tiny voices · Apr 28, 2014

750w would be more than enough.

Do you already own the H80i?

inputoutput · Apr 28, 2014

tiny voices :

Yea but I haven't opened it or anything because I was going to put it in at the weekend.

tiny voices · Apr 28, 2014

I would have come about the cooling differently, but if you have it already, I guess use it.

inputoutput · Apr 28, 2014

tiny voices :

What would you recommend? Because its unopened I can return it for a different one

tiny voices · Apr 28, 2014

I prefer air coolers. You can buy a cheaper and MUCH quieter cooler that will perform the same or better than the h80i. The h80 is still a good cooler for someone who want a closed loop cooler.

inputoutput · Apr 28, 2014

tiny voices :

what would you recommend air cooler wise?

tiny voices · Apr 28, 2014

http://uk.pcpartpicker.com/part/zalman-cpu-cooler-cnps9900maxb

That cooler for example only costs 45 quid and will perform within 1 degree of an h100i. It does have an LED in the fan which some people don't like. It is also not super quiet but is definitely not as loud as the h80.

http://uk.pcpartpicker.com/part/phanteks-cpu-cooler-phtc12dxbk

This one will perform about the same as the h80i.

http://uk.pcpartpicker.com/part/noctua-cpu-cooler-nhu12pse2

This will also perform the same as the h80 but is quieter than the Phanteks.

http://uk.pcpartpicker.com/part/noctua-cpu-cooler-nhd14

This will outperform the h80 and even the first cooler I listed. This one performs identical to or better than an h100i and is VERY quiet.

inputoutput · Apr 28, 2014

tiny voices :

If this is the case why are closed loop coolers so much more expensive when there are air coolers which perform equal to or greater than them?

tiny voices · Apr 28, 2014

Because they can be. Honestly, people buy them because they are "cool" or "interesting" or mostly to say " I have a water cooler". The real place for these type of units are in TINY build where there is a fan slot but very limited CPU cooler space like m-itx rigs. That is what they were originally designed for. Then they got really popular and companies realized they could sell beefed up versions for a HUGE premium as people think they are getting so much more cooling performance, when in reality you can buy a cheaper and quieter air cooler a the price point of most any closed loop cooler that will perform the same or better.

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