MSI GTX 770 4Gb

Seller Note “After installing drivers screen goes white, sometimes blue and then black. Displays fine once plugged in before installing drivers.”

Summary

  • Unusual 4Gb version, very nice condition, has a backplate unlike my two other MSI GTX 770 2Gb cards (MSI GTX 770 2GB (2048 MB) Twin Frozr (A) MSI GTX 770 2GB (2048 MB) Twin Frozr (B))
  • Resistances: vcore 16.3 ohms, 77.5 vmem
  • Actually very capable under load, Kombuster, Heaven and Subnautica all seem to run fine at about 60 fps
  • The GPU-Z graph is very unusual: The GPU is flat out at near 100%, but power consumption is around 70%! Vrel limiting all the time, and a strange choppy VRM graph with VDCC phasing in and out…
  • Once it crashed to a grey screen once after exiting heaven, it doesn’t always crash though (only once for me in two sessions)
  • After benchmarking / load, a slight clicking about a second between clicks, might be heat related/vrm fault?
  • Mats was fine
MSI GTX 770 4Gb

Need to inspect the VRM area.

Thoughts:

  • Maybe a faulty VRM capaitor would result in a choppy / unstable VRM ouptput voltage?
  • 67% TDP @ 100% GPU load might mean 1 or more power stages are compromised?