ASUS Expedition GTX 1050 TI 4Gb

Seller Note “When you boot it, it will turn on the display for about a minute before turning off.”

Summary

  • Looks OK, was cheap, warranty sticker is still in-place. One really nice feature of some Asus cards is the labelled test points on the back of the card (nice one ASUS!).
  • Resistances OK
    • VCore – 1.6
    • VMem – 286 (Micron D9SXD)
    • PEX – 357
    • 1.8V – 307
    • 5V- 3.5K
    • 3.3V – 4.7K
    • 12V – 5K
  • Seemingly a blank screen on driver load… However, this is not the common case or at least I’ve not seen it.
  • MATS passes, so memory is hopefully OK – A common black screen with a back-light sometimes means a memory issue.
  • As a second card, unusual behaviour can be observed regarding power delivery. When the HDMI is plugged into this card (rather than the primary), the screen blinks on/off and VRel and voltage matching voltage drops can be seen (see GPU-Z shots).
  • The BIOS initially looked suspect, but eventually looked normal (see shots)
  • Need to investigate the VCore VRM
ASUS Expedition GTX 1050 TI 4Gb – GPUZ Sample

Investigating Power Delivery

As a second card, using an oscilloscope to measure the 3 phases shows the same pattern on each. In a resting state, the waveform is relatively clean (about 0.6750V). However, when you load to the card by plugging in the HDMI lead, the output can be seen to switch between a rough/shimmering waveform with more waves in the drive state (which looks unstable, delivering 1.05V) and the cleaner resting state.

ASUS Expedition GTX 1050 TI 4Gb – VCore VRM