"How many watts do I need"? Check Here!

[hollyh88]

On 11/16/2019 at 2:54 AM, Jevnaker said:

Ok Thanks the psu i have right now is CoolerMaster B500 ver.2 PSU BULK which says 500 watt on the webpage. I wanna add one or 2 nvme m.2 ssd's to my desktop in addition to what i already have which is 

Intel Core i7-8700 Prosessor OEM
Socket-LGA1151, 6-Core, 12-Thread, 3.2/4.6GHz, 65W, OEM/tray, uten kjøler, Varenr: 975987 / Prodnr: CM8068403358316            
Cooler Master Hyper TX3i Komplett Ed.
Prosessorkjøler for Intel LGA115x, 92mm vifte, 800-2200 RPM, 17-30 dBA, Varenr: 915890 / Prodnr: RR-TX3E-22PK-K1            
ASUS TUF Z370-Plus Gaming, S1151
Hovedkort, ATX, Z370, DDR4, 2xPCIe-x16, CFX, 2xM.2, Aura Sync, Varenr: 956666 / Prodnr: TUF Z370-PLUS GAMING            
HyperX Fury DDR4 2666MHz 8GB
2x4GB CL15 Sort, Varenr: 878452 / Prodnr: HX426C15FBK2/8            
MSI GeForce GTX 1060 3GB OC
GPU , PCI-Express 3.0, GDDR5, "Dual Fan", 1544/1759MHz, Pascal, Varenr: 897292 / Prodnr: GEFORCE GTX 1060 3GT OC            
Seagate Firecuda 1TB 3.5'' SSHD
SATA 6.0Gb/s, 7200RPM, 64MB cache, 8GB Flash enhanced, KUN til PC prod, Varenr: 903048 / Prodnr: ST1000DX002KPC            
Seagate Firecuda 1TB 3.5'' SSHD
SATA 6.0Gb/s, 7200RPM, 64MB cache, 8GB Flash enhanced, Varenr: 898976 / Prodnr: ST1000DX002

+ an 120gb ssd i might remove to use for another pc.




 

that should be fine 

[Will_Hep23]

Hey, I have a pre-built Acer pc. Literally just a home pc not designed for gaming, although it has a surprisingly good CPU for the price.

It's an old gen aspire (XC-605) with an I5-4440 and 8GB DDR3 RAM, on a regular ATX mobo and a card reader. My best guess is that Acer went all out for a good CPU (for the time) and spent less on the other components.

Anyway, I was going to take the internals from it and put them in a new case (for some reason the case is roughly 100 mm wide and fairly shallow in depth, all the internals are fairly crammed). I have a 1050 ti to go in with it and was planning on getting a new PSU as well. The current PSU is a 250 watt, and from a bit of research a 250w seems to be a little on the low side although not sure.

I have a budget of £160 including the 1050 (so roughly £60), any ideas? 

[amdorintel]

38 minutes ago, Will_Hep23 said:

I have a 1050 ti to go in with it and was planning on getting a new PSU as well. The current PSU is a 250 watt, and from a bit of research a 250w seems to be a little on the low side although not sure.

I have a budget of £160 including the 1050 (so roughly £60), any ideas? 

oem's have proprietory psu's that aftermarket psu's just dont plug and play with, however there are adapters you can buy, and also you can hack up the wiring to fit both. just a matter of are you able and have the know how to do it.

 

 

[Chrizl1990]

I am looking at purchasing a new graphics card, but I'm worried I won't have enough power in reserve.

 

Current System:

ASUS ROG STRIX B450-F Motherboard

AMD Ryzen 7 2700X CPU

Western Digital 1TB HDD

Sandisk Ultra 128GB SSD

16GB (2x8GB) Adata XPG Spectrix D60G 3000MHz DDR4 RAM 

Novatech 500W PSU 80 Plus Rated

 

I was looking at purchasing a RX 590, would I need a 600w PSU to be safe?

[Spotty]

38 minutes ago, Chrizl1990 said:

I am looking at purchasing a new graphics card, but I'm worried I won't have enough power in reserve.

 

Current System:

ASUS ROG STRIX B450-F Motherboard

AMD Ryzen 7 2700X CPU

Western Digital 1TB HDD

Sandisk Ultra 128GB SSD

16GB (2x8GB) Adata XPG Spectrix D60G 3000MHz DDR4 RAM 

Novatech 500W PSU 80 Plus Rated

 

I was looking at purchasing a RX 590, would I need a 600w PSU to be safe?

RX590 draws up to around 250W. Ryzen 2700X probably around 100W or so, give or take a bit depending on the load. Full system load would probably be no more than 400W total.

I'm not familiar with Novatech power supplies. Do you have a model number or a link to the PSU?

 

 

20 minutes ago, RetroGeneral said:

I can only say this,

after watching that LTT vid where they used 1000W PSU's for their network gaming pc's setup i can tell you this..

That sais enuff!! 

...?
Brands often provide parts to LTT and the like to use in their videos. If someone is offering to give you a 1000W PSU for free then why not take it? Doesn't mean that you actually need 1000W though.

[Chrizl1990]

1 hour ago, Spotty said:

RX590 draws up to around 250W. Ryzen 2700X probably around 100W or so, give or take a bit depending on the load. Full system load would probably be no more than 400W total.

I'm not familiar with Novatech power supplies. Do you have a model number or a link to the PSU?

 

 

...?
Brands often provide parts to LTT and the like to use in their videos. If someone is offering to give you a 1000W PSU for free then why not take it? Doesn't mean that you actually need 1000W though.

Manufacturer Code - NOV-PSG501

 

I got the PSU cheap so worst outcome is I can buy another one in the future!

[Yogi_DaBear221]

Is my 850BQ Overkill? Can you have too much power in a PSU?

• CPU
  Ryzen 5 2600
• Motherboard
  ASUS B450M
• RAM
  T-Force 16GB 3000mhz DDR4
• GPU
  Powercolor Red Dragon Rx580 4GB
• Case
  Rosewill ATX Mid-Tower
• Storage
  1 X WD 1TB HDD
  1 X Seagate 2TB HDD
  1 Silicon Power 256gb SSD
• PSU
  EVGA850 BQ
• Cooling
  Enermax Liqmax III
  1 120mm Rosewill Case fan

[seagate_surfer]

  

2 hours ago, Yogi_DaBear221 said:

Is my 850BQ Overkill? Can you have too much power in a PSU?

• CPU
  Ryzen 5 2600
• Motherboard
  ASUS B450M
• RAM
  T-Force 16GB 3000mhz DDR4
• GPU
  Powercolor Red Dragon Rx580 4GB
• Case
  Rosewill ATX Mid-Tower
• Storage
  1 X WD 1TB HDD
  1 X Seagate 2TB HDD
  1 Silicon Power 256gb SSD
• PSU
  EVGA850 BQ
• Cooling
  Enermax Liqmax III
  1 120mm Rosewill Case fan

 

That GPU says that it needs at least 500w minimum, usually the manufacturer already took into account that there is a monitor, keyboard, mouse, RAM, CPU and maybe a couple of storage devices connected when they list minimum power required, so you may be a little higher than you need, but that's not a bad thing either.

[minibois]

2 hours ago, Yogi_DaBear221 said:

Is my 850BQ Overkill?

In terms of wattage: yes.

In terms of quality: no.

2 hours ago, Yogi_DaBear221 said:

Can you have too much power in a PSU?

No. Unless you count 'spending too much on your PSU so it costs too much money'.

2 hours ago, Yogi_DaBear221 said:

CPU: Ryzen 5 2600

Motherboard: ASUS B450M

RAM: T-Force 16GB 3000mhz DDR4

GPU: Powercolor Red Dragon Rx580 4GB

Case: Rosewill ATX Mid-Tower

Storage: 1 X WD 1TB HDD, 1 X Seagate 2TB HDD, 1 Silicon Power 256gb SSD

PSU: EVGA850 BQ

Cooling: Enermax Liqmax III, 1 120mm Rosewill Case fan

I would go for a 550W model from tier B+ or better.

Think Corsair TXM, RM, RMX or CX (not CXM), or Be Quiet Pure Power 11/Straight Power 11, Coolermaster MWE Gold, Bitfenix Whisper/Formula Gold, etc.

[Yogi_DaBear221]

22 minutes ago, minibois said:

In terms of wattage: yes.

In terms of quality: no.

No. Unless you count 'spending too much on your PSU so it costs too much money'.

I would go for a 550W model from tier B+ or better.

Think Corsair TXM, RM, RMX or CX (not CXM), or Be Quiet Pure Power 11/Straight Power 11, Coolermaster MWE Gold, Bitfenix Whisper/Formula Gold, etc.

It was a gift from a friend for my previous build, so it didn't really cost me a dime. 

[minibois]

5 hours ago, Yogi_DaBear221 said:

It was a gift from a friend for my previous build, so it didn't really cost me a dime. 

It will work, just not something I could really specifically recommend. The CPU and GPU aren't very high power draw, but still require a quality unit.

[San Andreas]

Hello smart people of the internet! I am in need of your assistance! Soooo... I am going to put together my 1st Mini ITX PC and I have pretty much decided on which parts I am going to buy except for how much WATT the PSU should have since (as far as I've read) having too much lowers your systems efficiency. Here is a list of the parts:

 

⦁    GPU: PowerColor Radeon RX 5700 XT Red Devil, 8GB GDDR6, HDMI, 3x DP (AXRX 5700XT 8GBD6-3DHE/OC)
⦁    CPU: AMD Ryzen 5 3600, 6x 3.60GHz, boxed (100-100000031BOX)
⦁    MOBO: Gigabyte X570 I Aorus Pro WIFI
⦁    RAM: G.Skill Trident Z Royal silber DIMM Kit 16GB, DDR4-3200, CL14-14-14-34 (F4-3200C14D-16GTRS)
⦁    SSD: Samsung 970 Pro NVME M.2 512 GB
⦁    Storage: Western Digital Caviar Black 1 TB 3.5" 7200RPM Internal Hard Drive
⦁    CPU Cooler: Noctua NH-L9a-AM4
⦁    CPU Cooler Fan: Noiseblocker NB-BlackSilentPro PE-P, 92mm
⦁    Keyboard: Logitech G19 Wired Standard Keyboard
⦁    Mouse: Razer Naga Molten

 

According to pcpartpicker.com the estimated wattage would be 379W.
According to powercolor.com under the specifications of the PowerColor Radeon RX 5700 XT Red Devil the Minimum System Power requirement (W) is 700W (I'm guessing to be on the safe side of things).

So my question is which of the following PSUs would be the most appropriate to add to this build?

(Keep in mind that no overclocking will be done) :

 

⦁    Corsair SF450 80 PLUS Platinum 450W SFX12V
⦁    Corsair SF600 80 PLUS Platinum 600W SFX12V
⦁    Corsair SF750 80 PLUS Platinum 750W SFX12V

 

[mariushm]

No, having too low power supply doesn't lower system efficiency. If the psu is too low, the system would shut down or reset.

 

5700xt consumes up to around 220w, with peaks up to around 250w

The 3600 would probably peak at around 100-120w

The rest of the components probably don't consume more than 50w

 

So, you'd probably be fine with a 500w power supply, but with SFX power supplies the price difference between wattages is usually fairly small, so I would look at around 600-650w.

There's an extra benefit to such a decision ... the higher wattage psus will often have thicker heatsinks or a bit better fans and they often run at bit more silent at lower power consumption.

So from that list, I'd choose the Corsair SF600 power supply.

 

As for your system .. .if you want to save some money I'd probably make a few changes.

Change the ram to something less fancy, but at 3600 and CL16 ... those look nice and good latency at CL14, but I'd be concerned about their height and the bump in frequency will matter more than the lower latency.

 

See maybe

CORSAIR Vengeance LPX 16GB (2 x 8GB) 288-Pin DDR4 SDRAM DDR4 3600 (PC4 28800) Desktop Memory Model CMK16GX4M2C3600C20 - Newegg.com

Crucial 8GB Ballistix Elite DDR4 3600MHz PC4 28800 Desktop Memory - Newegg.com

 

You can find cheaper SSDs than 970 evo but just as good. You can save probably 10-20$ there (or more) and you can probably add a few dollars and get a 1 TB SATA SSD, so you won't get mechanical parts except fans in the system.

 

[San Andreas]

2 hours ago, mariushm said:

No, having too low power supply doesn't lower system efficiency. If the psu is too low, the system would shut down or reset.

 

5700xt consumes up to around 220w, with peaks up to around 250w

The 3600 would probably peak at around 100-120w

The rest of the components probably don't consume more than 50w

 

So, you'd probably be fine with a 500w power supply, but with SFX power supplies the price difference between wattages is usually fairly small, so I would look at around 600-650w.

There's an extra benefit to such a decision ... the higher wattage psus will often have thicker heatsinks or a bit better fans and they often run at bit more silent at lower power consumption.

So from that list, I'd choose the Corsair SF600 power supply.

 

As for your system .. .if you want to save some money I'd probably make a few changes.

Change the ram to something less fancy, but at 3600 and CL16 ... those look nice and good latency at CL14, but I'd be concerned about their height and the bump in frequency will matter more than the lower latency.

 

See maybe

CORSAIR Vengeance LPX 16GB (2 x 8GB) 288-Pin DDR4 SDRAM DDR4 3600 (PC4 28800) Desktop Memory Model CMK16GX4M2C3600C20 - Newegg.com

Crucial 8GB Ballistix Elite DDR4 3600MHz PC4 28800 Desktop Memory - Newegg.com

 

You can find cheaper SSDs than 970 evo but just as good. You can save probably 10-20$ there (or more) and you can probably add a few dollars and get a 1 TB SATA SSD, so you won't get mechanical parts except fans in the system.

 

Thank you very much for your reply, you've been very helpful! I'm going to swap the 3200+14CL RAM with a 3600+16CL one and get the 600W PSU. As for the SSD I've had it in my previous build already, so I'll just be transfering it to the new one. Anyway, thanks again and have a great day!

[seagate_surfer]

On 1/16/2020 at 5:12 AM, San Andreas said:

Thank you very much for your reply, you've been very helpful! I'm going to swap the 3200+14CL RAM with a 3600+16CL one and get the 600W PSU. As for the SSD I've had it in my previous build already, so I'll just be transfering it to the new one. Anyway, thanks again and have a great day!

It is always better to have a PSU a little higher than what you really need, that will give you some peace at nights. 

[Robchil]

Can one of the moderators add url to a psu calculator like https://outervision.com/power-supply-calculator to the first post? makes life easier for alot,  not everyone knows google is your friend

[seon123]

2 hours ago, Robchil said:

Can one of the moderators add url to a psu calculator like https://outervision.com/power-supply-calculator to the first post? makes life easier for alot,  not everyone knows google is your friend

If you want a random number completely detached from reality, I recommend random.org instead. Way less shady business practices, and you get a more realistic number than any PSU calculator. 

[seagate_surfer]

2 hours ago, Robchil said:

Can one of the moderators add url to a psu calculator like https://outervision.com/power-supply-calculator to the first post? makes life easier for alot,  not everyone knows google is your friend

Not everyone likes to use PSU calculators, there is a divided opinion because PSU calculators generally calculate a higher number than necessary in almost all cases. The best way is to look at energy consumption of the components, also here they made a list of PSUs that can be used as a reference. To give you an example, when one checks the wattage of any GPU, let's say 400, that number is usually based on a machine that already has everything necessary to run a GPU, that is, mostly that number already includes the CPU, monitor, RAM, keyboard and mouse connected to the MOBO along with the GPU, but the calculator will add the CPU, monitor, RAM, keyboard and mouse again to that number resulting in something like 500. Generally, 500 W is enough in most cases, and 750 W PSU is usually enough to build a high-end PC, but if you want to solve the easiest way; find the power requirements of your MOBO,and GPU and add them together, then slightly round the resulting figure and you should be fine. Or use the PSU calculators from outervision.com. 

There is no single universal rule for selecting a high quality power supply. However, several indicators provide circumstantial evidence of the quality of the PSU, and some guidelines are generally useful. Number one being: Do not chep out on your PSU, generic and cheap PSUs with super discounts are usually poorly built and tend to be substandard. Just try to find one that offers solid warranties and support, and some people believe that the manufacturer does not matter (because even reputable brands can offer a few duds among all the studs), but the warranty matters to me and many other people as well. Just do your homework and look for reviews before buying.

Installing or replacing your power supply with a higher PSU does not really damage your components but it is considered unnecessary, however, it still offers an additional margin in case you want to connect additional components later. And most power supplies reach their maximum efficiency levels with loads in the range of 40-80 percent. This range is only useful to avoid the fluctuation as much as possible when overclocking and you want it to be as accurate as possible without alterations in the flow of energy and it is recommended to build a machine between 50 and 60 percent of the capacity of a power supply to achieve maximum efficiency regarding this matter. For example, if the maximum power or combined TDP (total design power) of your system’s present components is 300 watts, a 600-watt PSU would be a good fit. In a high-end system loaded with components that may peak collectively at 700 watts, a 1200-watt PSU would work well. But then again, this is a bit unnecessary in today's world because with so much energy offered by the machines now, OC is a thing of the past and now it is more like a weekend project than a real necessity.

[dogwitch]

just got myself a 2080 super and a quadro. (the former near the power draw)

what psu would i need for my system? with a bit of room to do basic oc.

https://pcpartpicker.com/user/firedrakes/saved/RNC8Jx

[seagate_surfer]

13 hours ago, dogwitch said:

just got myself a 2080 super and a quadro. (the former near the power draw)

what psu would i need for my system? with a bit of room to do basic oc.

https://pcpartpicker.com/user/firedrakes/saved/RNC8Jx

That board requires the three power cables, 24, 8 and 4. It needs a power supply with TWO eps / cpu cables, as well as the normal 24 pins. The RM850x, RM1000x and AX1200i seem to have that extra power cable and enough power to help you with that build.

[LukeSavenije]

On 2/20/2020 at 4:27 PM, seagate_surfer said:

Not everyone likes to use PSU calculators, there is a divided opinion because PSU calculators generally calculate a higher number than necessary in almost all cases. The best way is to look at energy consumption of the components, also here they made a list of PSUs that can be used as a reference. To give you an example, when one checks the wattage of any GPU, let's say 400, that number is usually based on a machine that already has everything necessary to run a GPU, that is, mostly that number already includes the CPU, monitor, RAM, keyboard and mouse connected to the MOBO along with the GPU, but the calculator will add the CPU, monitor, RAM, keyboard and mouse again to that number resulting in something like 500

you're not entirely wrong, it's good to have a bit of headroom calculated into it. the problem with outervision specifically is that it does it too heavily, counting things as capacitor degradation (which will never really happen on modern PSUs in the first place) into it, coming in as your example at around 600-700w with they system really not needing it.

 

if i were to actually use one of these "calculators", I found that Be Quiet and MSI for example were much less off

 

but that's my 10 cents on it

[dogwitch]

with every part etc using a bit different power draw. their has to be a base number to figure it out.

[LukeSavenije]

8 hours ago, dogwitch said:

with every part etc using a bit different power draw. their has to be a base number to figure it out.

i generally do cpu in review+gpu in review+50=usage

 

but generally you go higher than that, because good 350w PSUs aren't a thing

[dogwitch]

9 hours ago, LukeSavenije said:

i generally do cpu in review+gpu in review+50=usage

 

but generally you go higher than that, because good 350w PSUs aren't a thing

true that...

like the best you can do is never buy apervia.... if you want to kill a computer sure..... that about all that good for

[LukeSavenije]

Just now, dogwitch said:

the best you can do is never buy apervia

maybe i should add that one too

 

Diablotek: are you challenging me?