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i5-8400 + 1080Ti recommended PSU Wattage?

Nintson
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Go to solution Solved by Nintson,

Didn't think this would end up in a CPU discussion. Maybe i should add:

I am playing on an 1440p 144hz Monitor and am mainly looking forward to destiny 2.

In the few benchmarks i looked at the i5-8400 seemed like a great deal. Don't really have much clue of overclocking anyway.

Hey Guys, 

 

I'm currently thinking about upgrading my PC (for gaming).

I plan on buying an Intel i5-8400 and an Asus Rog Strix 1080Ti, other than that nothing too fancy about my build.

The only PSU-Calculator i found listing the i5-8400 was from Be-Quiet, estimating about 400 Wattage. However most people online recommend 650W PSU with an 1080Ti?

The thing is that i still own a good 500W PSU. Do you think it will suffice as i would rather not spend any more money?

 

Thanks for your help!

 

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1 minute ago, Nintson said:

Hey Guys, 

 

I'm currently thinking about upgrading my PC (for gaming).

I plan on buying an Intel i5-8400 and an Asus Rog Strix 1080Ti, other than that nothing too fancy about my build.

The only PSU-Calculator i found listing the i5-8400 was from Be-Quiet, estimating about 400 Wattage. However most people online recommend 650W PSU with an 1080Ti?

The thing is that i still own a good 500W PSU. Do you think it will suffice as i would rather not spend any more money?

 

Thanks for your help!

 

different point but UPGRADE YOUR PROCESSOR DUDE. get something i7, or unlocked i5, or your GPU will be so bottlenecked. as for a PSU, go around 600-650W. Maybe use the 500 instead of buying a new one and get a better processor

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Don't buy a mid-range CPU and an enthusiast-grade GPU, the GPU will be heavily bottlenecked.

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yeah I would get a I5 8600K because bottlenecking issues so your gpu won't preform at ful power but a 600 watt psu should be fine in either config

 

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3 minutes ago, NovaMan01 said:

different point but UPGRADE YOUR PROCESSOR DUDE. get something i7, or unlocked i5, or your GPU will be so bottlenecked. as for a PSU, go around 600-650W. Maybe use the 500 instead of buying a new one and get a better processor

What are you talking, the 6c6t i5 is almost on par with 7700k in gaming performance, 1080TI will not be bottlenecked by i5 8400

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Just now, ZM Fong said:

What are you talking, the 6c6t i5 is almost on par with 7700k in gaming performance, 1080TI will not be bottlenecked by i5 8400

core clock is the killer. you need an unlocked CPU with high core clocks

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1 minute ago, NovaMan01 said:

core clock is the killer. you need an unlocked CPU with high core clocks

https://www.techpowerup.com/reviews/Intel/Core_i5_8400/18.html

My Desktop specs:

Spoiler

AMD Ryzen 5 5600 Nvidia RTX3060Ti 8GB PNY XLR8 Gaming Epic-X RGB 16GB (8X2) 3200MHz CL16 Team Group MP33 Pro 1TB
ID-Cooling SE-224-XT White Gigabyte B550M DS3H mATX Tecware Forge M2 mATX White Case Montech Century 650W Gold

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Oh noes, I'm not getting 160 FPS when I'm already getting 140 FPS.

 

Even if there is a bottleneck, it's at the point here you're pinching for peanuts and aiming for e-peen points. Plus it's likely that games going forward are going to enjoy more cores than not. So a hexacore is probably going to be a better investment than a quad core with SMT. Hell, I would argue even going to a hexacore with SMT wouldn't really be worth it.

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1 minute ago, M.Yurizaki said:

hexacore is probably going to be a better investment than a quad core with SMT.

Agree. That's what I'm taking about.

My Desktop specs:

Spoiler

AMD Ryzen 5 5600 Nvidia RTX3060Ti 8GB PNY XLR8 Gaming Epic-X RGB 16GB (8X2) 3200MHz CL16 Team Group MP33 Pro 1TB
ID-Cooling SE-224-XT White Gigabyte B550M DS3H mATX Tecware Forge M2 mATX White Case Montech Century 650W Gold

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1 minute ago, M.Yurizaki said:

Oh noes, I'm not getting 160 FPS when I'm already getting 140 FPS.

 

Even if there is a bottleneck, it's at the point here you're pinching for peanuts and aiming for e-peen points. Plus it's likely that games are going to enjoy more cores than not. So a hexacore is probably going to be a better investment than a quad core with SMT. Hell, I would argue even going to a hexacore with SMT wouldn't really be worth it.

Well, if people are playing at higher res or 165+hz monitors, it makes a difference.

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Just now, Armakar said:

Well, if people are playing at higher res or 165+hz monitors, it makes a difference.

Higher resolution puts more strain on the GPU than the CPU. If OP is using a 4K monitor with all the bells and whistles enabled, then they can run the GPU on a potato CPU and it wouldn't really bottleneck.

 

Higher refresh rate... sure, but the games you're likely to play where that would actually be helpful can run at 60+ FPS on potato hardware anyway.

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4 minutes ago, M.Yurizaki said:

Higher resolution puts more strain on the GPU than the CPU. If OP is using a 4K monitor with all the bells and whistles enabled, then they can run the GPU on a potato CPU and it wouldn't really bottleneck.

 

Higher refresh rate... sure, but the games you're likely to play where that would actually be helpful can run at 60+ FPS on potato hardware anyway.

try putting a celeron and a 1080TI together and running 4K. CPU choice matters

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2 minutes ago, NovaMan01 said:

try putting a celeron and a 1080TI together and running 4K. CPU choice matters

In fact CPU don't really matter in 4k gaming, however that doesn't mean you can put a Celeron or Pentium

My Desktop specs:

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AMD Ryzen 5 5600 Nvidia RTX3060Ti 8GB PNY XLR8 Gaming Epic-X RGB 16GB (8X2) 3200MHz CL16 Team Group MP33 Pro 1TB
ID-Cooling SE-224-XT White Gigabyte B550M DS3H mATX Tecware Forge M2 mATX White Case Montech Century 650W Gold

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7 minutes ago, NovaMan01 said:

try putting a celeron and a 1080TI together and running 4K. CPU choice matters

It's the only review of a recent Celeron I could find, but: https://us.hardware.info/reviews/6709/24/intel-celeron-g3920-processor-review-skylake-for-a-trifle-benchmarksngtx-960980-gta-vn1920x1080-mediumultra Notice that when the graphics settings are cranked up even at 1080p, the gap closes quite a bit.

 

But yeah, as @ZM Fong says, this doesn't mean you should build with a Celeron.

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4 minutes ago, M.Yurizaki said:

Higher resolution puts more strain on the GPU than the CPU. If OP is using a 4K monitor with all the bells and whistles enabled, then they can run the GPU on a potato CPU and it wouldn't really bottleneck.

 

Higher refresh rate... sure, but the games you're likely to play where that would actually be helpful can run at 60+ FPS on potato hardware anyway.

What a ridiculous claim to make, you can't run higher resolutions well on a crappy CPU. And no, resolution has no direct effect on the CPU to GPU use ratio, it is almost entirely reliant on framerate. This misconception comes because higher resolutions tend to achieve lower framerates on any given system. 4k at 60Hz and 1080p at 60hz will have near identical CPU usage (if anything the 4k will use slightly more CPU depending on the game design).

 

Having said that, an i5-8400 will not be a much of a bottleneck for a 1080Ti in the vast majority of cases. Personally, I would probably go with the 8600k (although the $60 price delta makes it a tough choice, that and the motherboard will likely be more expensive for the 8600k so that adds even more cost), If it saves him ~$100 to go with the 8400 vs the 8600k then it may be worth it to him. A system with an 8400 and 1080Ti will still destroy a system with an 8600k (or even 8700k) and a 1080. The 8400 will be more than enough CPU for most games, even with a 1080Ti (it's almost as fast as the i7-6800k, just without HT).

Primary PC-

CPU: Intel i7-6800k @ 4.2-4.4Ghz   CPU COOLER: Corsair H110i GTX   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

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Other Systems:

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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+

 

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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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9 minutes ago, pyrojoe34 said:

What a ridiculous claim to make, you can't run higher resolutions well on a crappy CPU. And no, resolution has no direct effect on the CPU to GPU use ratio, it is almost entirely reliant on framerate. This misconception comes because higher resolutions tend to achieve lower framerates on any given system. 4k at 60Hz and 1080p at 60hz will have near identical CPU usage (if anything the 4k will use slightly more CPU depending on the game design).

Of course 4K and 1080p at 60 Hz, assuming you've capped the FPS to 60, will have near identical CPU usage. The game logic doesn't change with resolution and the CPU is always going to send 60 commands to the GPU per second (though that's very likely a simplified explanation). However, if the CPU usage is already low in the game on a higher end CPU, you can stick in a lower end CPU to a certain point and the performance won't change. As long as the CPU can get the game logic done and send out 60 commands to the GPU per second, it doesn't matter what the performance of the CPU is overall. You've met a baseline.

 

If you are bottlenecking the GPU because the CPU can't send commands fast enough at 1080p, setting the resolution to 4K may keep the GPU busy long enough because there's more work to do to where the CPU can send commands at a rate it can actually do.

 

Also I should point you to the PS4 Pro or Xbox One X, two systems that can do true 4K (and in some cases on the XBOX, 60FPS) and they do it on netbook CPUs from 2012.

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12 minutes ago, M.Yurizaki said:

Of course 4K and 1080p at 60 Hz, assuming you've capped the FPS to 60, will have near identical CPU usage. The game logic doesn't change with resolution and the CPU is always going to send 60 commands to the GPU per second (though that's very likely a simplified explanation). However, if the CPU usage is already low in the game on a higher end CPU, you can stick in a lower end CPU to a certain point and the performance won't change. As long as the CPU can get the game logic done and send out 60 commands to the GPU per second, it doesn't matter what the performance of the CPU is overall. You've met a baseline.

 

If you are bottlenecking the GPU because the CPU can't send commands fast enough at 1080p, setting the resolution to 4K may keep the GPU busy long enough because there's more work to do to where the CPU can send commands at a rate it can actually do.

Right, but then you're just switching the bottleneck from the CPU to the GPU, one of the two will bottleneck in any situation. The point is that the 8400 will not be a significant bottleneck for the 1080Ti (unless he's playing at like 240Hz), even at 144Hz. If you have to choose between the 8400 (+ B350) with a 1080Ti, or a 8600k (+ Z370) with a 1080, for close to the same price, then the 8400 system will win every gaming benchmark and have a significantly higher price to performance ratio. That's the point.

Primary PC-

CPU: Intel i7-6800k @ 4.2-4.4Ghz   CPU COOLER: Corsair H110i GTX   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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Didn't think this would end up in a CPU discussion. Maybe i should add:

I am playing on an 1440p 144hz Monitor and am mainly looking forward to destiny 2.

In the few benchmarks i looked at the i5-8400 seemed like a great deal. Don't really have much clue of overclocking anyway.

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2 minutes ago, Nintson said:

Didn't think this would end up in a CPU discussion. Maybe i should add:

I am playing on an 1440p 144hz Monitor and am mainly looking forward to destiny 2.

In the few benchmarks i looked at the i5-8400 seemed like a great deal.

Yea, you'll be fine. People fixate too much on the whole "bottlenecking" argument without really understanding what it means. Unless you have an extra $100 to burn on the 8600k + Z370 board then go with the 8400 + B350 board. You will be just fine and have a great system.

Primary PC-

CPU: Intel i7-6800k @ 4.2-4.4Ghz   CPU COOLER: Corsair H110i GTX   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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42 minutes ago, pyrojoe34 said:

Right, but then you're just switching the bottleneck from the CPU to the GPU, one of the two will bottleneck in any situation. The point is that the 8400 will not be a significant bottleneck for the 1080Ti (unless he's playing at like 240Hz), even at 144Hz. If you have to choose between the 8400 (+ B350) with a 1080Ti, or a 8600k (+ Z370) with a 1080, for close to the same price, then the 8400 system will win every gaming benchmark and have a significantly higher price to performance ratio. That's the point.

The point you were commenting on my original post wasn't trying to suggest such. It was only saying that gaming on a higher resolution would shift the bottleneck back to the GPU where it should be.

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