GTX 1080 cause extreme cpu bottleneck on i5-3570K, games unplayable

WoodlandsJR

Reputable
Jun 8, 2015
4
0
4,520
Hello, I am upgrading my system for VR-gaming. I just purchased and installed MSI Geforce GTX1080 'Armor/OC edition', and upgraded to most recent driver.

My CPU is i5-3570K, on MSI z77A-G41 motherboard, running Windows 7. I also have a 1TB SSD hard drive, when I installed this, I noticed a little bottlenecking already, even before my GTX 1080 install.

Old GPUs were crossfire-linked AMD 7750s, RAM memory is corsair vengeance 16Gb. I could play games such as Total War Shogun 2 and Red Orchestra 2 at ~medium settings with reasonable framerates.

Performance with GTX 1080 now renders games unplayable, for example Company of Heroes benchmark runs at like 5-20 fps. CPU is straight up at maximum capacity, %100, and ~104 degrees C, while graphics card is registering like 4% usage, ie. the fans are not even turning on.

What is the problem here? I have intended to upgrade an i7, expecting the i5 CPUs perhaps to have some bottleneck, but not to get blasted out of the water, games should still play better than they used to. Does anyone know if there is a driver error, or if there are Windows parameters that need to get switched?

Thanks,
Jeff
 
Solution
I solved the problem. Even though graphics problems became a severe issue once I installed gtx-1080, degradation of graphics and bottlenecking was caused by improper cooling of the CPU, which started to become apparent roughly the time I added a SSD as the main drive.
Problem was solved by reconfiguring the water cooler:
1. There was major dust obstruction between the fan and the water cooler radiator.
2. The pump power cable was plugged into the 'CPU fan' slot, rather than the 'Sys fan' slot, while the radiator fan was plugged into the 'sys fan' slot.
3. Perhaps most importantly, it looked like the cooler plate was not completely flush with the chip.

After fixing these things, CPU temps staying low, and getting high framerates...

WoodlandsJR

Reputable
Jun 8, 2015
4
0
4,520
I solved the problem. Even though graphics problems became a severe issue once I installed gtx-1080, degradation of graphics and bottlenecking was caused by improper cooling of the CPU, which started to become apparent roughly the time I added a SSD as the main drive.
Problem was solved by reconfiguring the water cooler:
1. There was major dust obstruction between the fan and the water cooler radiator.
2. The pump power cable was plugged into the 'CPU fan' slot, rather than the 'Sys fan' slot, while the radiator fan was plugged into the 'sys fan' slot.
3. Perhaps most importantly, it looked like the cooler plate was not completely flush with the chip.

After fixing these things, CPU temps staying low, and getting high framerates during benchmarks.
Let that be a lesson to you.
-J
 
Solution