Which PSU should I get for a build with an i7-8700K & GTX 1080 - FR

[Toude Linux]

Hey everyone, I'm currently in the middle of choosing my parts but I just can't quite figure out which PSU I should get. My build will include an i7-8700K and a gtx1080. IN addition to that I intend to use the h100i v2 as AIO and a few HDDs and SSD.

Do you have any advice on what would suit me best. I'd like to keep the PSU's budget under 80€ if possible. Do note that I prefer it to be well suited and pay  a little more than having something that won't suffice.

I don't have a preferred retailer I issue most of my commands through internet. As long as it works well I choose the cheapest, I have no brand preference.

Hopefully you'll be able to help me.

[Streetguru]

1 minute ago, Toude Linux said:

Hey everyone, I'm currently in the middle of choosing my parts but I just can't quite figure out which PSU I should get. My build will include an i7-8700K and a gtx1080. IN addition to that I intend to use the h100i v2 as AIO and a few HDDs and SSD.

Do you have any advice on what would suit me best. I'd like to keep the PSU's budget under 80€ if possible. Do note that I prefer it to be well suited and pay  a little more than having something that won't suffice.

I don't have a preferred retailer I issue most of my commands through internet. As long as it works well I choose the cheapest, I have no brand preference.

Hopefully you'll be able to help me.

What's your monitor resolution/refresh rate going to be?

 

Is it not worth saving money with something like an R5 2600 over the 8700K?

[Toude Linux]

It's not actually for me but for a friend who doesn't speaks English. He's got his mind set on the i7-8700K and I'm helping him find a PSU.

[LienusLateTips]

Just looking at DE prices

 

Cheapest:

https://de.pcpartpicker.com/product/Qb8j4D/seasonic-focus-gold-450w-80-gold-certified-semi-modular-atx-power-supply-ssr-450fm

https://de.pcpartpicker.com/product/jfs8TW/bitfenix-formula-gold-450w-80-gold-certified-atx-power-supply-bp-fm450ulag-7r

 

Cheapest that's both quiet and semi-modular:

https://de.pcpartpicker.com/product/LxKhP6/be-quiet-pure-power-10-cm-500w-80-silver-certified-semi-modular-atx-power-supply-bn277

 

Cheapest that's both quiet and fully modular:

https://de.pcpartpicker.com/product/cg4NnQ/bitfenix-whisper-m-450w-80-gold-certified-fully-modular-atx-power-supply-bp-wg450umag-7fm

[Toude Linux]

Is 450 or even 500W enough? I have no experience in PSUs but according to forums I read this seems pretty sketchy to me according to the build we're talking about.

[LienusLateTips]

Just now, Toude Linux said:

Is 450 or even 500W enough? I have no experience in PSUs but according to forums I read this seems pretty sketchy to me according to the build we're talking about.

i7 8700K? Maybe 150W at most. Likely more in the 100W range.

 

GTX 1080? 200W.

 

 

 

It's fine.

[Toude Linux]

Also what does modularity do? Not quite sure to understand and wouldn't want to make a mistake here.

[LienusLateTips]

Just now, Toude Linux said:

Also what does modularity do? Not quite sure to understand and wouldn't want to make a mistake here.

So non-modular is when you have all the cables, even the optional ones, fixed to the PSU.

 

Semi-modular/modular is when you have the cables you WILL need, like 24pin motherboard and 8pin EPS/CPU fixed to the motherboard.

 

Fully modular is when every single cable is able to be detached.

[Toude Linux]

Is having a modular PSU useful? In which cases is it useful? I've read the 2 main threads about PSU on this forum (the one with the tier and the one with the woltage). Are the PSU you've advised me well conceived? Do they power all the components correctly. Also you say 450W is enough (which I'm perfectly ok with) but is 100W for all other components enough. And will it still be if I wish to do some overclocking (light) or if I change like my GPU for a newer one in a few years?

Btw thanks for your quick answers, really apreciated!

[LienusLateTips]

Just now, Toude Linux said:

Is having a modular PSU useful? In which cases is it useful?

It can be easier to do cable management. You don't have the cables you don't need dangling around in your case either, increasing airflow.

 

Usually I recommend semi-modular, unless you want custom braided cables.

1 minute ago, Toude Linux said:

I've read the 2 main threads about PSU on this forum (the one with the tier and the one with the woltage). Are the PSU you've advised me well conceived? Do they power all the components correctly.

Hahaha, I sometimes contribute to that thread.

 

All the PSUs are part of Tier 2, except for the last, and most expensive one, which is part of Tier 1.

2 minutes ago, Toude Linux said:

Also you say 450W is enough (which I'm perfectly ok with) but is 100W for all other components enough. And will it still be if I wish to do some overclocking (light) or if I change like my GPU for a newer one in a few years?

I accounted overclocking into those calculations.

 

GPUs are using less and less power overtime. You'll be fine (unless you buy a AMD card that uses 600W)

[Toude Linux]

Well thank you very much for all those advices. I'll still look around a bit more just in case. Your quickly given advices were really great! Thank you very much!I might still ask you a few more things but you've settled a lot of unanswered questions.

Have a good evening/morning/whatever.

[Streetguru]

35 minutes ago, Toude Linux said:

It's not actually for me but for a friend who doesn't speaks English. He's got his mind set on the i7-8700K and I'm helping him find a PSU.

Probably any decent 650W gold rated unit from like seasonic/corsair/EVGA/XFX

[Toude Linux]

Ho well you guys don't seem to agree on the voltage. Could explain me the reasons for your choice?

@Streetguru@LienusLateTips

[Streetguru]

1 minute ago, Toude Linux said:

Ho well you guys don't seem to agree on the voltage. Could explain me the reasons for your choice?

@Streetguru@LienusLateTips

If you mean the wattage, you can never have enough of it.

The 650W units are usually just the best for the money in that PSU range.

[LolTrooper57]

5 hours ago, Toude Linux said:

Hey everyone, I'm currently in the middle of choosing my parts but I just can't quite figure out which PSU I should get. My build will include an i7-8700K and a gtx1080. IN addition to that I intend to use the h100i v2 as AIO and a few HDDs and SSD.

Do you have any advice on what would suit me best. I'd like to keep the PSU's budget under 80€ if possible. Do note that I prefer it to be well suited and pay  a little more than having something that won't suffice.

I don't have a preferred retailer I issue most of my commands through internet. As long as it works well I choose the cheapest, I have no brand preference.

Hopefully you'll be able to help me.

if you use the pcpartpicker website and put all the pieces for your build into a parts list, it will give you an estimated watt usage for the whole build, which gives you a decent gauge to give you an idea for a pcu. I'd suggest a minimum 80+ Gold efficiency. i found an evga 650w 80+ Gold for $50. however, if your pc takes more than that, it may be difficult to find a cheao 80+ Gold psu. there's nothing wrong with anyting lower than 80+ Gold, all it means is that you'll get the best cheap solution for power.

[Toude Linux]

Thanks for your answer. I'm wondering though, when I entered all my parts un PCpartpicker it gave me something under 400W and now you advise me something of 650W. I'm not sure to understand?

[awesomegamer919]

4 hours ago, Toude Linux said:

Thanks for your answer. I'm wondering though, when I entered all my parts un PCpartpicker it gave me something under 400W and now you advise me something of 650W. I'm not sure to understand?

450w is plenty, 550w if you want "muh headroom", 650w+ is just dumb...

[Toude Linux]

Ok thank you very much for all your advices!