Question Power Supply wattage

[briblo1982]

I'm building a new system. I'm going to have 4 140mm fans, 6 120 mm fans, 3 on the cooler 3 on the side of the case. I have a corsair rm1000e 1000w power supply.
I have ASUS TUF GAMING NVIDIA GEFORCE RTX 4080 SUPER. I have 3 SATA Seagate Hard Drives, 2 16GB DDR5 Corsair Dominator, I went to a couple of different power supply calculator but they give different results. Does it seem that 1000w should be enough or do I need to move to 1200W

 

[COLGeek]

1000w should be fine. Why so many fans?

 

[briblo1982]

1000w should be fine. Why so many fans?

i have extra space for more fans. Never have too much air you know

 

[geofelt]

Power supply calculators are deadly accurate.....
IF.......
You know the inputs.
like..
What will be the requirements of your future games/apps?
What capacitor ageing factor to use?
What peak demand might the graphics card make?
What/how will you overclock?
It does not hurt to overprovision a psu.
It will only use the power demanded of it.
1000W should be fine.

Also, The number of fans seems excessive.
Efficient placement is more important.
What is the make/model of your case?

 

[briblo1982]

Power supply calculators are deadly accurate.....
IF.......
You know the inputs.
like..
What will be the requirements of your future games/apps?
What capacitor ageing factor to use?
What peak demand might the graphics card make?
What/how will you overclock?
It does not hurt to overprovision a psu.
It will only use the power demanded of it.
1000W should be fine.

Also, The number of fans seems excessive.
Efficient placement is more important.
What is the make/model of your case?

I don't overclock not sure how or feel the need to really. corsair 7000d airflow case.

 

[geofelt]

Your case is excellent for a top performing air cooler.
Use 3 140mm front intakes to supply all the cooling air you might want for the motherboard, gpu and cpu.
Use the single 140mm rear exhaust to direct the airflow over the components to be cooled and out of the case asap.
Added fans is just going to mess up a simple airflow.

But, you can always experiment.

 

[COLGeek]

i have extra space for more fans. Never have too much air you know

Airflow is great, but more fans also means more noise. Just keep that in mind. Your plan is VERY excessive based on the continued discussion. Take @geofelt 's suggestion regarding the number.

 

[Roland Of Gilead]

I'm building a new system. I'm going to have 4 140mm fans, 6 120 mm fans, 3 on the cooler 3 on the side of the case. I have a corsair rm1000e 1000w power supply.

Drop the RMe. It's okay, but not fantastic components like it's bigger brother, RMx. As already suggested 1000w, is fine.

i have extra space for more fans. Never have too much air you know

Contrary to your belief, yes too many fans can negatively impact airflow depending on how you set them up. Filling every single fan slot, just because may not give you what you are thinking you get.

Power supply calculators are rubbish. They don't factor in GPU transient power spikes for example. AS suggested above, over provisioning is better, and can be moved from system to system, or put with more power hungry components.

 

[briblo1982]

Drop the RMe. It's okay, but not fantastic components like it's bigger brother, RMx. As already suggested 1000w, is fine.

Contrary to your belief, yes too many fans can negatively impact airflow depending on how you set them up. Filling every single fan slot, just because may not give you what you are thinking you get.

Power supply calculators are rubbish. They don't factor in GPU transient power spikes for example. AS suggested above, over provisioning is better, and can be moved from system to system, or put with more power hungry components.

Can't really afford over priced power supply. It's about what works for me on a budget. I just take off the 3 140mm fans and keep the corsair qx120 fans cause of the lights and corsair h150 elite capillax cooler

 

[Misgar]

I'm going to have 4 140mm fans, 6 120 mm fans, 3 on the cooler 3 on the side of the case.

Hmm. 16 fans. I'm using an old Lian Li case, limited to 2 x 120mm intake and 1 x 120mm + 1 x 80mm exhaust, with a 7950X, NH-D15, GTX 4070, 5 x 3.5" hard disks and 3 x M.2 NVMe.

I probably don't have enough fans for optimal cooling during long video transcodes. You have too many for linear airflow.

 

[JeffreyP55]

I don't overclock not sure how or feel the need to really. corsair 7000d airflow case.

I have the same case. One case fan and the three AIO radiator fans mounted up top. Nice and quiet, temp are fine. MSI x870 WiFi, AMD 9900x, RTX4070. Stressed running Passmark Performance test a couple of times. the PC. 70º C max.
your PC will sound like a Boeing 737 taking off with fan abuse.

 

[helper800]

Can't really afford over priced power supply. It's about what works for me on a budget. I just take off the 3 140mm fans and keep the corsair qx120 fans cause of the lights and corsair h150 elite capillax cooler

So your current PC is something like this? What exactly are you changing? Just adding/changing fans?

PCPartPicker Part List

CPU: Intel Core i7-14700K 3.4 GHz 20-Core Processor ($329.92 @ Amazon)
CPU Cooler: Corsair iCUE H150i ELITE CAPELLIX XT 65.57 CFM Liquid CPU Cooler
Motherboard: Asus ROG STRIX Z790-E GAMING WIFI ATX LGA1700 Motherboard ($399.99 @ Best Buy)
Memory: Corsair Dominator Platinum RGB 32 GB (2 x 16 GB) DDR5-6000 CL30 Memory ($144.99 @ Amazon)
Storage: Samsung 970 Evo Plus 1 TB M.2-2280 PCIe 3.0 X4 NVME Solid State Drive ($108.95 @ Amazon)
Storage: Samsung 970 Evo Plus 1 TB M.2-2280 PCIe 3.0 X4 NVME Solid State Drive ($108.95 @ Amazon)
Storage: Seagate BarraCuda Pro 12 TB 3.5" 7200 RPM Internal Hard Drive ($324.45 @ Amazon)
Storage: Seagate BarraCuda Pro 12 TB 3.5" 7200 RPM Internal Hard Drive ($324.45 @ Amazon)
Storage: Seagate BarraCuda Pro 12 TB 3.5" 7200 RPM Internal Hard Drive ($324.45 @ Amazon)
Video Card: Asus TUF GAMING OC GeForce RTX 4080 SUPER 16 GB Video Card ($1949.99 @ Amazon)
Case: Corsair 7000D AIRFLOW ATX Full Tower Case ($289.97 @ Amazon)
Power Supply: Corsair RM1000e (2023) 1000 W 80+ Gold Certified Fully Modular ATX Power Supply ($154.99 @ Best Buy)
Total: $4461.10
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2025-06-17 11:03 EDT-0400

 

[briblo1982]

So your current PC is something like this? What exactly are you changing? Just adding/changing fans?

PCPartPicker Part List

CPU: Intel Core i7-14700K 3.4 GHz 20-Core Processor ($329.92 @ Amazon)
CPU Cooler: Corsair iCUE H150i ELITE CAPELLIX XT 65.57 CFM Liquid CPU Cooler
Motherboard: Asus ROG STRIX Z790-E GAMING WIFI ATX LGA1700 Motherboard ($399.99 @ Best Buy)
Memory: Corsair Dominator Platinum RGB 32 GB (2 x 16 GB) DDR5-6000 CL30 Memory ($144.99 @ Amazon)
Storage: Samsung 970 Evo Plus 1 TB M.2-2280 PCIe 3.0 X4 NVME Solid State Drive ($108.95 @ Amazon)
Storage: Samsung 970 Evo Plus 1 TB M.2-2280 PCIe 3.0 X4 NVME Solid State Drive ($108.95 @ Amazon)
Storage: Seagate BarraCuda Pro 12 TB 3.5" 7200 RPM Internal Hard Drive ($324.45 @ Amazon)
Storage: Seagate BarraCuda Pro 12 TB 3.5" 7200 RPM Internal Hard Drive ($324.45 @ Amazon)
Storage: Seagate BarraCuda Pro 12 TB 3.5" 7200 RPM Internal Hard Drive ($324.45 @ Amazon)
Video Card: Asus TUF GAMING OC GeForce RTX 4080 SUPER 16 GB Video Card ($1949.99 @ Amazon)
Case: Corsair 7000D AIRFLOW ATX Full Tower Case ($289.97 @ Amazon)
Power Supply: Corsair RM1000e (2023) 1000 W 80+ Gold Certified Fully Modular ATX Power Supply ($154.99 @ Best Buy)
Total: $4461.10
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2025-06-17 11:03 EDT-0400

seagate 10tb i had to change back to gigabyte z790 aorus elite ax ice motherboard cause the asus had bent cpu pins in the socket doubt that can be fixed even with warranty due to human error. the cooler will have to be changed cause the commander core doesn't work anymore but i'm going to check the icue software to see if it's been disabled or something. I change my mind on the fans just have 7 fans in the case (1) 140 in the back (3) 120mm in the front and the cooler will have (3) 120 fans on the radiator