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mini ITX build concerns

aidzbelty
  • 69 months ago

Hi, first time builder here. I'm already saving up in building a portable mini-ITX unit for gaming at my cousins' houses and these are the parts that I have picked out so far: http://ca.pcpartpicker.com/p/Zcg2jX

I'm getting a high wattage PSU to make it silent as possible, even planning to get the Corsair RM 650 for cleaner cable management & the "0 db" feature.

With the motherboard I am having trouble in choosing between these two:

MSI Z97AC https://ca.pcpartpicker.com/part/msi-motherboard-z97iac ASUS Z97I Plus https://ca.pcpartpicker.com/part/asus-motherboard-z97iplus

On one hand I was looking at the MSI for portability because the it has short antennae unlike the ASUS that has a long cable with the dongle-like thing at the end. But on the other hand the ASUS has an 8-pin power connector, while the MSI has a 4-pin one.

I'm already planning to OC it between 4.0-4.2 GHz depending on what I could work out, but I am worried about the 4-pin vs 8-pin because according to what I researched is the 8-pin is more stable for overclocking.

So for my questions: 1. Based on the build would the MSI mobo with the 4-pin suffice, or should I opt for the 8-pin ASUS? 2. Even though the mobos support 1866 RAM through BIOS settings, won't it get bottlenecked by the CPU anyway? (the Intel website mentioned the RAM specs is DDR3-1333/1600)

I don't mind you guys criticizing my build, though I would appreciate some insightful responses too. Thanks in advance..

AFB

Comments

  • 69 months ago
  • 2 points

ASUS Z97I PLUS would be a favorable choice over the MSI Z97 AC if you are overclocking. It is powered through a 8-pin power connector which offers better overclocking stability versus Z97 AC's 4-pin connector. Both boards can support high overclocked ram, it will not bottleneck the CPU whatsoever. Intel does mention that it can only support DDR3-1333/1600 but the motherboard allows it to go above rated and support voltages and frequency.

Everything seems good with your build but the power supply doesn't really match the quality of your components you have selected. Perhaps raise the budget a bit higher to get a better compact power supply with at least Gold Rated Efficiency?

  • 69 months ago
  • 1 point

Thanks for the insight.. =)

I was looking at the Corsair RM650 (http://pcpartpicker.com/part/corsair-power-supply-rm650) because of its 0 db function, seems that I will have to get that then.

Although this will be the first build that I will be overclocking, do you think 650W is more than enough for it? I wasn't sure about the build wattage once overclocked so I was just looking at both the 650 and 750 versions of the RM series.

  • 68 months ago
  • 1 point

There's a power supply calculator at http://www.extreme.outervision.com/psucalculatorlite.jsp . It can calculate the effect of overclocking.

It doesn't have the i5-4690K so I put in an i5-4670K. I selected an overclock to 4200 MHz @ 1.35 V (a wild guess). I plugged everything else in except the video card - the closest was the GTX 770. I don't know much about video cards but I thought I read the 900 series was more power efficient so this should be an overstated value for a calculation with a little higher safety margin. It calculated 436 W.

The 650 W should work, but power supplies are most efficient at 30 - 50% load so a 750 W power supply would be closer to this optimal point. I've read that the RM750 is also built differently (and even better!) than the RM650 - not that I've had any complaints with the 650. Plus if you were interested in the fanless mode, a 750 W power supply would run cooler, pushing the fan activation point out a little further.

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