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DPC Latency changes for no reason

post #1 of 4
Thread Starter 
I reformatted this PC. It's exactly the same hardware and drivers, only this time it's a clean install and last time it was an old install that had been originally done with a different motherboard (when I swapped in the new mobo I didn't uninstall the old USB3.0 drivers etc., so if anything it should have been worse then.) But now the DPC latency is more erratic and on avaerage higher with the clean install.

First reading is before, second is after clean install:
dXlwT.jpg

EDIT: forum ruins pictures, here is link: http://i.imgur.com/dXlwT.jpg

Why did it change?
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Skylake I
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Intel Core i7-6700K 4GHz Gigabyte GA-Z170X-Designare F23a Corsair LPX 32GB CMK32GX4M4A2133C13 Samsung SSD 840 PRO 256GB 
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Samsung SSD 840 PRO 256GB Noctua NH-U12S (+NF-S12A PWM) Windows 7 Pro x64 SP1/Windows 10 Pro x64 Super Flower Leadex Gold 750W 
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Corsair Carbide Air 540 (+3x NF-S12A FLX) Asus Xonar Essence STX 
CPUMotherboardRAMHard Drive
Intel Core i7-6700K 4GHz Gigabyte GA-Z170X-Designare F23a Corsair LPX 32GB CMK32GX4M4A2133C13 Samsung SSD 840 PRO 512GB 
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post #2 of 4
Looks ok to me, pretty low actually, dont worry unless it jumps to over 500us
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post #3 of 4
Thread Starter 
I still can't understand why it would increase just because I reinstalled. I used exactly the same set of drivers.

It kickes up above 500us now and then (just for a split second/one bar of that graph), but that's normal as far as I can tell, and that doesn't happen during idle.
Skylake I
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Samsung SSD 840 PRO 256GB Noctua NH-U12S (+NF-S12A PWM) Windows 7 Pro x64 SP1/Windows 10 Pro x64 Super Flower Leadex Gold 750W 
CaseAudio
Corsair Carbide Air 540 (+3x NF-S12A FLX) Asus Xonar Essence STX 
CPUMotherboardRAMHard Drive
Intel Core i7-6700K 4GHz Gigabyte GA-Z170X-Designare F23a Corsair LPX 32GB CMK32GX4M4A2133C13 Samsung SSD 840 PRO 512GB 
Hard DriveCoolingOSPower
Samsung SSD 840 PRO 512GB Noctua NH-U12S (+NF-S12A PWM) Windows 7 Pro x64 SP1/Windows 10 Pro x64 EVGA SuperNOVA G2 750W 
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Silverstone Fortress FT02 (+4x NF-A14 PWM) 
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Skylake I
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CPUMotherboardRAMHard Drive
Intel Core i7-6700K 4GHz Gigabyte GA-Z170X-Designare F23a Corsair LPX 32GB CMK32GX4M4A2133C13 Samsung SSD 840 PRO 256GB 
Hard DriveCoolingOSPower
Samsung SSD 840 PRO 256GB Noctua NH-U12S (+NF-S12A PWM) Windows 7 Pro x64 SP1/Windows 10 Pro x64 Super Flower Leadex Gold 750W 
CaseAudio
Corsair Carbide Air 540 (+3x NF-S12A FLX) Asus Xonar Essence STX 
CPUMotherboardRAMHard Drive
Intel Core i7-6700K 4GHz Gigabyte GA-Z170X-Designare F23a Corsair LPX 32GB CMK32GX4M4A2133C13 Samsung SSD 840 PRO 512GB 
Hard DriveCoolingOSPower
Samsung SSD 840 PRO 512GB Noctua NH-U12S (+NF-S12A PWM) Windows 7 Pro x64 SP1/Windows 10 Pro x64 EVGA SuperNOVA G2 750W 
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Silverstone Fortress FT02 (+4x NF-A14 PWM) 
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post #4 of 4
All this latency does (in general) is affect audio when recording. It is unlikely to affect anything else.
    
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WD/ST LG KUHLER WINDOWS 
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LG/SAMSUNG IBM MODEL M CORSAIR THERMALTAKE 
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MS INTELLIMOUSE EXPLORER 3.0 REGULAR LARGE PAD ONBOARD but it USED TO BE A XONAR DG  
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