Is a (MAX PSU POWER 450W) enough to run my Nvidia Gtx 1070, and a i5-6400 or an intel core i7 7700?

nicolaas123 · Jul 30, 2017

(my current build is Nvidia gtx 1070, i5-6400 16 gigs of ram, 1 tb hdd 128 ssd)
is my 450w psu bottlenecking my setup, or is my i5 too low? your answers are greatly appreciated *sorry for my bad English*

(when i play gta 5, my intel goes up to 99 percent, while my gtx 1070 is only at 40 percent ish)

taimoorbaig382 · Jul 30, 2017

You will need a 750 watt power supply

Rogue Leader · Jul 30, 2017

taimoorbaig382 :

No, not at all, and please do not respond with incorrect advice like this.

OP PSU's do not "bottleneck" a setup. It either works, or it doesn't. Your setup works fine, therefore the PSU is enough. Honestly I would have used a 550w PSU just to have some more room for efficency and that you're running the 450 pretty close to its max, but its fine, its not your problem.

Your CPU on the other hand is a lower clock speed processor and may be a bottleneck in some CPU intensive games.

nicolaas123 · Jul 30, 2017

Rogue Leader :

First of, thanks for replying so fast!

my computer is a prebuilt one (this is the computer) https://www.google.dk/search?q=lenovo+cube&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjH873IirHVAhUBmrQKHQiaBzEQ_AUICigB&biw=1360&bih=662#imgrc=ukudgfWoQLmT2M:

i dont know if i can upgrade my PSU in it, is the 450w PSU the same size as the 550?

oh and if so i want to upgrade my cpu, then i will have to get a better PSU?

geofelt · Jul 30, 2017

A good quality 450w psu is sufficient.
A GTX1070 max wattage usage will be 225w.
Your cpu is a 65w psu.
You are fine on psu power.
If there were a problem you would see issues such as graphics artifacts.

If your gameplay is satisfactory to you, I would not worry much about the cpu/gpu utilizations.

If your I5-6400@2.7 is not sufficiently fast, you probably have cpu upgrade options.
Your motherboard and bios level will determine what you can do.
I would expect I7-6700@3.4 or i7-6700k@4.0 to be a valid upgrade.
Going to a 7th gen I7-7700 may be an issue.
Regardless, the added 30w from a stronger cpu is not going to be a problem.

Rogue Leader · Jul 30, 2017

nicolaas123 :

CPU upgrade will not require a PSU upgrade.

Looking at that system it LOOKS like an ATX PSU, easiest way to find out, get out the measuring tape and measure it length width and height and let us know in here. There are smaller form factor PSUs available as well although your "good" options are limited.

Honestly you don't really need to replace it anyway.

RetiredChief · Jul 30, 2017

First and to the point, agree with geofelt (Spec Max for GTX-1070 is only 150 W)and Rogue Leader that 450 Watts is OK and your bottle neck is the CPU.

That said there is more to 450 Watts is enough.
1) Based on 65 W for GPU and GPU max is 150 W . Using these two values your Max would be 285 Watts. For CPU all of that is on your =12V rail, the majority of the GPU (Say 95%) is also on the +12V rail. However These are absolute Maxs not typical. IE my i5-7500 (a 65W TDP) CPU only draws 45 W when running a stress test. Typical under load for Your GPU is probable <125 W. 65 + 150 = 215 W which is LESS than 1/2 your PSU rating. Adding a i7 @ 95 Watts only brings this to 245W.
.
2 Things that must be factored in is Quality of PSU (Repeat Quality) and the Real power available on the +12 V rail. VERY few PSWs can provide their listed max for the +12V rail. If you add up the total power max for all rails you will find that they exceed the Rated Max for the PSU - NO CAN DO. In Your case the Max for your +12V will NOT exceed 250 W (adding in other uses for +12V), adding in a i7 = 280W. This is well under your Max available to +12V. Therefore, you would be OK with a quality 450 Watt PSU.
The Thing is that with a Low quality PSU, even if it provides the Power, You stand a good chance of it going out and taking other components with it. (PS I Have no idea of the quality of your PSU).

2) But to really verify that the PSU is providing the proper power is simple:
While loading the CPU note your +12V (I use CPUID-CPU-Z select bench then stress) it should stay within specs Spec are 11.4->12.6V (PS I use a Min of 11.6V) and the +12V should Not drop more than 0.25 Volts below what it was at idle. Verify loading by stressing your GPU, I run Furmark in a window, Same-same +12V requirements. PS also Monitor your Temps as You do NOT want to overheat your CPU or GPU.

turkey3_scratch · Jul 30, 2017

Calculating power doesn't really apply much to this thread anyway since his problem isn't anything to do with the PSU (he's not getting random shut downs or anything, just poor performance in games which is the CPU as said). But for the GTX 1070 (Founder's Edition), this is data I have acquired on its power consumption from respectable sources.

__________________________________
Hardware: Nvidia GTX 1070
Data on: Founder's Edition
Sources: http://www.tomshardware.com/reviews/nvidia-geforce-gtx-1070-8gb-pascal-performance,4585-7.html https://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_1070/22.html

Power Consumption
Gaming (average): 150W

RetiredChief :

Aftermarket gtx 1070 power consumption will go higher. The MSI Gaming X version's power consumption is more around 180W compared to the 150W of the Founder's Edition.

__________________________________
Hardware: Nvidia GTX 1070
Data on: MSI Gaming X 8G
Source: http://www.tomshardware.com/reviews/nvidia-geforce-gtx-1070-8gb-pascal-performance,4585-7.html

Power Consumption
Gaming (average): 180W

RetiredChief :

Looking at a voltage does not have anything to do with the PSU "providing power". If voltage is lower then amperage will just be higher. Additionally, software voltage readings are usually very off anyway. They're not actually measured from the PSU, they can be quite faulty. Read this http://www.jonnyguru.com/modules.php?name=NDFAQs&op=FAQ_Question&ndfaq_id=26

RetiredChief · Jul 30, 2017

@ Turkey3_Scratch
1) You are correct that "Aftermarket gtx 1070 power consumption will go higher" but OP did not indicate and aftermarket GPU.
2) While most of what you said is correct, Ie E does down then I goes Up and Many of the software packages do NOT correctly report the PSU voltages, But some DO and generally it's easy to tell. For example if it's saying your +12V is like 10V and system is working you know it's not reporting it correctly. Often it is the Software is not looking in the correct place or uses an incorrect algorithm. Note I always initially verify the software values with a DMM. As to voltage tolerance, The +5V ± 5% is Not because of Computers, that standard was before computers and is Based on TTL logic chips, Doesn't matter what happened to current below 4.75 V you enter never-never land for 1s&0s. For the +12V, The MB provides voltage regulators to provide the CPU voltage. These regulars are also PWM converters and as the voltage drops duty cycle increases, which also increases the Heat generated and this is the reason I use 11.6V as My Min vs the spec of 11.4V.

Just a side comment, Not Knocking you:
But I cut my teeth on Power supplies. I've taught Series Regulated, shunt regulated, and switching (PWM) Power supplies. Plus One type very few people even know about controlling the freq above and below resonant to control output voltage. I have designed Power supplies, I have worked with the Engineer that designed the Switching PS for a satellite Instrument (Mid 80's). Taught circuit analysis for several Radar systems, Worked as a technician on several satellite systems, B737 research aircraft, F16 Drop model. Retired 2004 But Was asked to come back to work 2008 on a NASA satellite (as Research engineer) until I retired 2016 - But @ 74 I figured it was time to retire.

turkey3_scratch · Jul 30, 2017

Good point on the voltage readings, but how is that stuff relevant anyway? OP seems to have a CPU bottleneck, I feel like it could all just cause unnecessary confusion.

nicolaas123 · Jul 30, 2017

geofelt :

A good quality 450w psu is sufficient.
A GTX1070 mas wattage usage will be 225w.
Your cpu is a 65w psu.
You are fine on psu power.
If there were a problem you would see issues such as graphics artifacts.

If your gameplay is satisfactory to you, I would not worry much about the cpu/gpu utilizations.

If your I5-6400@2.7 is not sufficiently fast, you probably have cpu upgrade options.
Your motherboard and bios level will determine what you can do.
I would expect I7-6700@3.4 or i7-6700k@4.0 to be a valid upgrade.
Going to a 7th gen I7-7700 may be an issue.
Regardless, the added 30w from a stronger cpu is not going to be a problem.

Thanks you very much.

nicolaas123 · Jul 30, 2017

RetiredChief :

@ Turkey3_Scratch
1) You are correct that "Aftermarket gtx 1070 power consumption will go higher" but OP did not indicate and aftermarket GPU.
2) While most of what you said is correct, Ie E does down then I goes Up and Many of the software packages do NOT correctly report the PSU voltages, But some DO and generally it's easy to tell. For example if it's saying your +12V is like 10V and system is working you know it's not reporting it correctly. Often it is the Software is not looking in the correct place or uses an incorrect algorithm. Note I always initially verify the software values with a DMM. As to voltage tolerance, The +5V ± 5% is Not because of Computers, that standard was before computers and is Based on TTL logic chips, Doesn't matter what happened to current below 4.75 V you enter never-never land for 1s&0s. For the +12V, The MB provides voltage regulators to provide the CPU voltage. These regulars are also PWM converters and as the voltage drops duty cycle increases, which also increases the Heat generated and this is the reason I use 11.6V as My Min vs the spec of 11.4V.

Just a side comment, Not Knocking you:
But I cut my teeth on Power supplies. I've taught Series Regulated, shunt regulated, and switching (PWM) Power supplies. Plus One type very few people even know about controlling the freq above and below resonant to control output voltage. I have designed Power supplies, I have worked with the Engineer that designed the Switching PS for a satellite Instrument (Mid 80's). Taught circuit analysis for several Radar systems, Worked as a technician on several satellite systems, B737 research aircraft, F16 Drop model. Retired 2004 But Was asked to come back to work 2008 on a NASA satellite (as Research engineer) until I retired 2016 - But @ 74 I figured it was time to retire.

Thank you very much for your time and your answer

nicolaas123 · Jul 30, 2017

turkey3_scratch :

Thank you very much for your time and your answer

nicolaas123 · Jul 30, 2017

Rogue Leader :

nicolaas123 :

CPU upgrade will not require a PSU upgrade.

Looking at that system it LOOKS like an ATX PSU, easiest way to find out, get out the measuring tape and measure it length width and height and let us know in here. There are smaller form factor PSUs available as well although your "good" options are limited.

Honestly you don't really need to replace it anyway.

Thank you very much for your time and your answer

nicolaas123 · Jul 30, 2017

geofelt :

so i should be looking to get a i7-6700 or the i7-6700k, and not i7-7700 (cause its using too much W?)

turkey3_scratch · Jul 30, 2017

The I7-7700 should actually use less power than the I7-6700K.

Rogue Leader · Jul 30, 2017

You may be BIOS limited in what you can use. I would not buy a 7th gen CPU (7700), as the system came with a 6400 and may not have a BIOS upgrade available to run a 7th gen CPU. Thats something you'd have to check with Lenovo. On top of that not worth buying a k CPU as you cannot overclock with the board you have most likely.

THe best upgrade for you is probably an i7-6700.

nicolaas123 · Jul 31, 2017

Rogue Leader :

Ok, thanks

Is a (MAX PSU POWER 450W) enough to run my Nvidia Gtx 1070, and a i5-6400 or an intel core i7 7700?

Commendable

Reputable

It's a trap!

Commendable

Titan

It's a trap!

Judicious

Expert

Judicious

Expert

Commendable

Commendable

Commendable

Commendable

Commendable

Expert

It's a trap!

Commendable

Share this page