Hello, let me start with full system specs
CPU: Intel i7 4770k small 4.2GHz overclock (lost lottery at least for hyper 212 evo capabilities)
MB: Gigabyte Z87X-OC F8 BIOS
GPU: Sapphire Nitro+ Vega 64 non limited edition (2x8pin connectors)
RAM: Kingston HyperX Beast 2x8GB 2133MHz
SSD Samsung 850 Evo 250GB and WD Black 2TB HDD
PSU: Seasonic SS-650-KM3 650W
CASE: CM Stormtrooper
Operating system: Windows 10 64bit 1803
GPU drivers: latest 2019 adrenaline will check tomorrow which version exactly
Well lets begin, since installing GPU yesterday, everything seemed to work fine, I fired up GTA V played for 15-20 mins. CPU actually took good hammering but temps were in the mid 60s, GPU suprisingly boosted to 1580 MHz this is without undervolting/tweaking because I wanted to test it stock first but hit "240W" power limit. Temps seemed ok 63 core, 67 mem and 75 hotspot, freesync was also working great but it was late and I was tired so just to fullfil my 144Hz addiction and test for high fps coil whine played 10 mins of CS GO (no coil whine wohoo)
But today ehhh, started some Rainbow Six Siege with friends and at the end of the match PC just instantly shutdown every component, no lights on motherboard and error code display was off, but then 1-2 seconds later it powers on by its own. Tried Witcher 3 it was even faster this time couldn't go past first ingame cutscene. It doesn't happen in web surfing or light games so it definitely seems to be power related.
Ok now things I desperately tried:
Loading factory defaults in BIOS
Using only 1 monitor
Directly plugging PSU into wall outlet (without using APC Surge Protector) btw AC here is 220v-230v depending on time of the day and 50Hz
Using single splitted Seasonic provided cable instead of two separate cables from PSU to GPU. Notice: All cables used came with Seasonic PSU
This actually seems to have delayed shutdown by sometime, because it was first time that I was able to finish Witcher 3 cutscene and played a bit but it still happened after some time nonetheless.
Sadly I don't have another good enough PSU to test but from what I was able to find on the internet it seems even newer Seasonic PSUs have really sensitive OCP protection which doesn't play great with Vega cards current spikes. Then again it could be that the card itself is faulty or even MB, but I am more leaning towards PSU being the culprit here.
Also system was without GPU for around 10 months using only iGPU. Last discrete GPU in the system was ASUS GTX 780 DirectCU II OC, one of Elpida memory chips on the GPU failed sadly, it was working for 4 years
Tomorrow I will try power saving in wattman just to see what happens and will update my findings. Really no need to test power viruses like Furmark if I can't get it to work in games first. But I have a gut feeling that it would actually pass Furmark and OCCT which are continuous loads.
What are your thoughts did some of you experiance similar problems? If I need to buy another PSU I don't even know what to consider (was always lookong at Seasonic lineup) many other manufacturers use their designs also. It would be nice if Vega 64 owners could point out what PSUs are they using.
Thanks for reading.
CPU: Intel i7 4770k small 4.2GHz overclock (lost lottery at least for hyper 212 evo capabilities)
MB: Gigabyte Z87X-OC F8 BIOS
GPU: Sapphire Nitro+ Vega 64 non limited edition (2x8pin connectors)
RAM: Kingston HyperX Beast 2x8GB 2133MHz
SSD Samsung 850 Evo 250GB and WD Black 2TB HDD
PSU: Seasonic SS-650-KM3 650W
CASE: CM Stormtrooper
Operating system: Windows 10 64bit 1803
GPU drivers: latest 2019 adrenaline will check tomorrow which version exactly
Well lets begin, since installing GPU yesterday, everything seemed to work fine, I fired up GTA V played for 15-20 mins. CPU actually took good hammering but temps were in the mid 60s, GPU suprisingly boosted to 1580 MHz this is without undervolting/tweaking because I wanted to test it stock first but hit "240W" power limit. Temps seemed ok 63 core, 67 mem and 75 hotspot, freesync was also working great but it was late and I was tired so just to fullfil my 144Hz addiction and test for high fps coil whine played 10 mins of CS GO (no coil whine wohoo)
But today ehhh, started some Rainbow Six Siege with friends and at the end of the match PC just instantly shutdown every component, no lights on motherboard and error code display was off, but then 1-2 seconds later it powers on by its own. Tried Witcher 3 it was even faster this time couldn't go past first ingame cutscene. It doesn't happen in web surfing or light games so it definitely seems to be power related.
Ok now things I desperately tried:
Loading factory defaults in BIOS
Using only 1 monitor
Directly plugging PSU into wall outlet (without using APC Surge Protector) btw AC here is 220v-230v depending on time of the day and 50Hz
Using single splitted Seasonic provided cable instead of two separate cables from PSU to GPU. Notice: All cables used came with Seasonic PSU
This actually seems to have delayed shutdown by sometime, because it was first time that I was able to finish Witcher 3 cutscene and played a bit but it still happened after some time nonetheless.
Sadly I don't have another good enough PSU to test but from what I was able to find on the internet it seems even newer Seasonic PSUs have really sensitive OCP protection which doesn't play great with Vega cards current spikes. Then again it could be that the card itself is faulty or even MB, but I am more leaning towards PSU being the culprit here.
Also system was without GPU for around 10 months using only iGPU. Last discrete GPU in the system was ASUS GTX 780 DirectCU II OC, one of Elpida memory chips on the GPU failed sadly, it was working for 4 years
Tomorrow I will try power saving in wattman just to see what happens and will update my findings. Really no need to test power viruses like Furmark if I can't get it to work in games first. But I have a gut feeling that it would actually pass Furmark and OCCT which are continuous loads.
What are your thoughts did some of you experiance similar problems? If I need to buy another PSU I don't even know what to consider (was always lookong at Seasonic lineup) many other manufacturers use their designs also. It would be nice if Vega 64 owners could point out what PSUs are they using.
Thanks for reading.
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