PSU for i7 8700k and gtx 1080 or 1080ti..

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uzair.siyal

Jun 3, 2018
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Hey guys! My PC specifications :

CPU: i7 8700k

MOBO: Asus Z370-H gaming

RAM: Corsair Vengeance 16gb

CPU Cooler: Cryorig M9i Air Cooler

HDD: Seagate 2TB
SSD: Samsung 850 Evo 256gb

Gaming Keyboard and Mouse

CASE: Spec 4 Corsair

Monitor : LED 24inch 1080 (60Hz) ..( soon upgrading to WQHD or UHD monitor)


So here is my current PSU on which my whole current system is running => Cooler master Gx 550w 80 plus Bronze http://www.coolermaster.com/powersupply/gx-series/gx-550w/

i am soon purchasing a Gtx 1080 or 1080 Ti (Gigabyte , MSI , Asus or Zotac probably)

so i need your suggestion guys whether i should upgrade my current PSU or this is enough for gtx 1080 or 1080 Ti , also considering overclocking in game for this gpu and CPU too..


Your help and suggestion will be appreciated ..
Thanks
 
Solution
Karadjgne
Corsair? RMx, RMi, TXM, HX, HXi are what I'd stick to. Considering it's quality and ability, the R series is the better value.

While the Cryorig m9i is a fantastic budget cooler, I'd not stick it on any i7 of any newer generation. That 8700k is well capable of close to 200w at stock values. The 120w m9i won't last long if you push the cpu hard during gaming. Expect high temps or even issues under loads.
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Get a quality PSU from EVGA, Seasonic, or Corsair. I am not a fan of cooler master PSUs. A malfunction on the PSU can damage your hardware. 1080ti's and 8700k's are expensive. Get a good PSU. For wattage a good 650 watt PSU will be plenty.

This is one of the best PSUs on the market.

PCPartPicker part list: https://pcpartpicker.com/list/Bgq4BP
Price breakdown by merchant: https://pcpartpicker.com/list/Bgq4BP/by_merchant/

Power Supply: EVGA - SuperNOVA G3 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($69.89 @ OutletPC)
Total: $69.89
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-07-25 17:24 EDT-0400

This is a new PSU from EVGA. I have heard some good things about it and it is priced nicely. But being an early adopter with PSUs is not always a good idea. The technology does not change much and you want to give the PSUs some time on the market to see if a lot of failures are reported. But the price is good for this one.

PCPartPicker part list: https://pcpartpicker.com/list/CfL8r6
Price breakdown by merchant: https://pcpartpicker.com/list/CfL8r6/by_merchant/

Power Supply: EVGA - SuperNOVA G1+ 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($49.99 @ B&H)
Total: $49.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-07-25 17:25 EDT-0400


 
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Corsair? RMx, RMi, TXM, HX, HXi are what I'd stick to. Considering it's quality and ability, the R series is the better value.

While the Cryorig m9i is a fantastic budget cooler, I'd not stick it on any i7 of any newer generation. That 8700k is well capable of close to 200w at stock values. The 120w m9i won't last long if you push the cpu hard during gaming. Expect high temps or even issues under loads.
 
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Solution
3 types of psu. Standard have all the wires coming out of the rear, and you are stuck with them all, none are removable. Semi-Modular has the important wires same as Standard, like the motherboard power wires etc, but the accessory wires are plugged in, so you'd only plug in what you need. Full modular has plugs for every wire, a bonus if you need to remove the psu, everything Un plugs, no need to remove all the wires too. And again, you only need to use the plugs for what you need, so no having to hide all the unused extras.

Also, in certain situations, the OEM can be different. An example would be the Antec High Current Gamer series. Standard HCG are built by Delta. HCG-M (semi modular version) are built by Seasonic. Performance/build wise, the Delta units are very slightly better, but it's really hard to argue that over Seasonic standards.
 
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ok thanks , i am going to purchase this TXM 650W as upgrade for further 1080 or 1080ti.

can it withstand in moderate overclocking the gpu and cpu?
 
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That TXM can handle anything you could possibly throw at it, laugh, and give you change. And that, in a nutshell, is exactly why you purchase a good psu. Pc insurance.

Still do not like your choice of cpu cooler for that i7. It's basically not as good as what'd be considered a stock cooler. Games generally run @50-70% cpu usage, meaning @100-140w for that cpu. And you are trying to cool it with a 120w cooler designed for i3's.
 
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yeah i know but my friend suggested me that this is one is a good mid range cooler enough for i7 . btw which cpu cooler should you suggest??
 
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The m9i is a great budget cooler. It's just not designed for something with the power/thermal requirements of a 6c/12t 94w i7-8700k, which are known to run hot.

Your biggest issue will be cooler clearance. You've only 150mm. I'd be looking at a Scythe Fuma Rev.b which fits but will need a slight raising of the front fan, or move the front to rear, or a Noctua NH-C14S, which is a downdraft style at 142mm and a second fan can be added under/above.

Either that, or Aio liquid cooling, preferably a 240mm since a 120mm is barely better than the m9i
 
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But my CPU temperature never crosses than 40 to 50 degree celsius in terms of gaming and overclocking in this cooler.
I think i don't have to face the cpu cooling issues rather than PSU issue in future gaming.
 
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Really? 40-50? Gaming? For most other ppl, they'll see those temps during Windows background tasks spiking during idle.

At current 4.6GHz OC 1.218v on i7-3770K with a 280mm kraken x61, average gaming temps are 54-55°C. For you to see lower with OC on an i7-8700k you'd need to be playing LoL or similar single thread games. Multiple thread games and high cpu intensity games like GTA:V or Witcher 3 or even BF1 are going to change that 40-50°C. And that's stock, not using mods or other scripts.

But if you are good, what am I to say.
 
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