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1000Watts VS 750Watts?

gibattack07
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Hello,everyone.

I want to ask one question.Which PSU should I use for my future gaming build?An 1000Watts PSU or an 750Watts?I do plan to have an SLI configuration in the far future.

My build will consist of an i7 8700k,16 GB DDR4 TridentZ(non RGB) >:) ) and a GTX 1080 or a GTX 1070 Ti(depends on Amazon's supplies).

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750w should be more than enough.  You can use PCPartsPicker to type in everything in your system and it will tell you the rated power draw.

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2 minutes ago, Evanair said:

750w should be more than enough.  You can use PCPartsPicker to type in everything in your system and it will tell you the rated power draw.

I heard that an SLI config draws a lot of power...I don't want to turn my PC into a charcoal... :(

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750W is more than enough. I have a 6800k (OCed) which has a higher TDP than the 8700k, a GTX1080, 2 SSDs, 2HDDs, AIO, etc. and under gaming load it draws 350-400W, peak usage (using benchmarks that use more power than would ever be used in actual tasks) was ~520W in bursts, 450W continuous. You should have power draws 50+W less than my system with 1 GPU and at most 200W more than that with 2 GPUs.

Primary PC-

CPU: Intel i7-6800k @ 4.2-4.4Ghz   CPU COOLER: Bequiet Dark Rock Pro 4   MOBO: MSI X99A SLI Plus   RAM: 32GB Corsair Vengeance LPX quad-channel DDR4-2800  GPU: EVGA GTX 1080 SC2 iCX   PSU: Corsair RM1000i   CASE: Corsair 750D Obsidian   SSDs: 500GB Samsung 960 Evo + 256GB Samsung 850 Pro   HDDs: Toshiba 3TB + Seagate 1TB   Monitors: Acer Predator XB271HUC 27" 2560x1440 (165Hz G-Sync)  +  LG 29UM57 29" 2560x1080   OS: Windows 10 Pro

Album

Other Systems:

Spoiler

Home HTPC/NAS-

CPU: AMD FX-8320 @ 4.4Ghz  MOBO: Gigabyte 990FXA-UD3   RAM: 16GB dual-channel DDR3-1600  GPU: Gigabyte GTX 760 OC   PSU: Rosewill 750W   CASE: Antec Gaming One   SSD: 120GB PNY CS1311   HDDs: WD Red 3TB + WD 320GB   Monitor: Samsung SyncMaster 2693HM 26" 1920x1200 -or- Steam Link to Vizio M43C1 43" 4K TV  OS: Windows 10 Pro

 

Offsite NAS/VM Server-

CPU: 2x Xeon E5645 (12-core)  Model: Dell PowerEdge T610  RAM: 16GB DDR3-1333  PSUs: 2x 570W  SSDs: 8GB Kingston Boot FD + 32GB Sandisk Cache SSD   HDDs: WD Red 4TB + Seagate 2TB + Seagate 320GB   OS: FreeNAS 11+

 

Laptop-

CPU: Intel i7-3520M   Model: Dell Latitude E6530   RAM: 8GB dual-channel DDR3-1600  GPU: Nvidia NVS 5200M   SSD: 240GB TeamGroup L5   HDD: WD Black 320GB   Monitor: Samsung SyncMaster 2693HM 26" 1920x1200   OS: Windows 10 Pro

Having issues with a Corsair AIO? Possible fix here:

Spoiler

Are you getting weird fan behavior, speed fluctuations, and/or other issues with Link?

Are you running AIDA64, HWinfo, CAM, or HWmonitor? (ASUS suite & other monitoring software often have the same issue.)

Corsair Link has problems with some monitoring software so you may have to change some settings to get them to work smoothly.

-For AIDA64: First make sure you have the newest update installed, then, go to Preferences>Stability and make sure the "Corsair Link sensor support" box is checked and make sure the "Asetek LC sensor support" box is UNchecked.

-For HWinfo: manually disable all monitoring of the AIO sensors/components.

-For others: Disable any monitoring of Corsair AIO sensors.

That should fix the fan issue for some Corsair AIOs (H80i GT/v2, H110i GTX/H115i, H100i GTX and others made by Asetek). The problem is bad coding in Link that fights for AIO control with other programs. You can test if this worked by setting the fan speed in Link to 100%, if it doesn't fluctuate you are set and can change the curve to whatever. If that doesn't work or you're still having other issues then you probably still have a monitoring software interfering with the AIO/Link communications, find what it is and disable it.

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Just now, pyrojoe34 said:

750W is more than enough. I have a 6800k (OCed) which has a higher TDP than the 8700k, a GTX1080, 2 SSDs, 2HDDs, AIO, etc. and under gaming load it draws 350-400W, peak usage (using benchmarks that use more power than would ever be used in actual tasks) was ~520W in bursts, 450W continuous.

I guess you are right...the 6800k has a higher TDP.Thanks for your help. :)

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Running 1800x, 32GB (4x8gb), 2 2.5ssd, 1 PCIe x4 SSD, a 3.5inch 5400RPM HDD, 2x 1080's, 6 120mm fans and a water pump all on a AX760i from Corsair.  All OC'd.  You should be fine.

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Why run SLI on something that's not the highest end GPU? Why run SLI at all? Support is going down, so in many games you won't see the same performance as on a single 1080 Ti. Add to that the usual issues with SLI, and it's just plain stupid.

550-650W is all you need for SLI 1080s, it's a low TDP card

Edited by seon123
Something something

:)

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550W because you will never ever do SLI.

And if you do it only for around 5min before you realize that it doesn't even work with many games today.

 

Vulkan only added support for a second card recently. 

"Hell is full of good meanings, but Heaven is full of good works"

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750 watts would cover you needs even with an sli config, only thing you now need to focus on is the quality of the PSU within that wattage. spend like you're spending on a 1000 watt psu for that matter to get a clean efficient psu.

Details separate people.

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3 minutes ago, Tech_Dreamer said:

750 watts would cover you needs even with an sli config, only thing you now need to focus on is the quality of the PSU within that wattage. spend like you're spending on a 1000 watt psu for that matter to get a clean efficient psu.

There's no need for that. There are plenty of good 750W PSUs for ~$120. Not that he needs anywhere near 750W in the first place, though. 

:)

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I thank every single one of your for your suggestion and thank you for helping me build my PC. :)So to sum it up.I need a 650W-750W PSU Gold efficiency or more.

 

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Either will work. Would rather get the 1k myself.

Main RIg Corsair Air 540, I7 9900k, ASUS ROG Maximus XI Hero, G.Skill Ripjaws 3600 32GB, 3090FE, EVGA 1000G5, Acer Nitro XZ3 2560 x 1440@240hz 

 

Spare RIg Lian Li O11 AIR MINI, I7 4790K, Asus Maximus VI Extreme, G.Skill Ares 2400 32Gb, EVGA 1080ti, 1080sc 1070sc & 1060 SSC, EVGA 850GA, Acer KG251Q 1920x1080@240hz

 

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