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xxbassplayerxx

Small Session Last Night - Looking for Advice

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Last night I was tuning my 980X and OC for Geekbench (for an OCN Competition) but I was having issues pushing my CB back. Removing memory sticks didn't seen to help a whole lot... CB stayed pretty near -115°C to -120°C the whole time... Made it back to -130°C or so in single channel, but it wasn't always consistent (sometimes it would hard lock at -125°C).

 

Does playing with the skews help move that around?

 

Here are the voltages I was using:

 

VCore - 1.785V

QPI/VTT - 1.435V

PLL - 1.60V

QPI PLL - 1.32V

IOH - 1.26V

DRAM - 1.86V

 

Clock skews - 800 / 900

 

All PWM frequency switches were set to max (1 KHz? Can't remember)

 

Here's what I've tried:

 

I lowered my Uncore frequency and lowered QPI/VTT to 1.315V.

I tried raising PLL to 1.70V, but haven't tried 1.50V (derp, should have tried that).

I tried triple, dual, and single channel memory. In my past experience (with a different chip), this made a significant difference, a la -110°C triple channel, -135*°C dual channel, -150°C to full pot single channel.

 

Chip seems strong... It can do Geekbench in triple channel at -110°C at 5.9GHz. Dual channel at -120°C and 6GHz. I gave a half-assed attempt at Pi and validation. Validated 6.5 and passed 1M at around 6.15GHz (but didn't beat my previous score, so I didn't save).

 

I'll try 1.50V CPU PLL next time. Any other advice? Should I lower my QPI/VTT even more?

 

Results:

 

image_id_1566009.png

 

[hwbot=3095872]submission[/hwbot]

 

image_id_1566010.png

 

[hwbot=3095873]submission[/hwbot]

 

image_id_1566011.png

 

[hwbot=3095874]submission[/hwbot]

 

Photos:

 

image_id_1566007.jpeg

 

image_id_1566008.jpeg

 

2OGKLPf.jpg

Edited by xxbassplayerxx

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Seems to me all the good chips of this gen ran full pot, usually in dual channel

 

PLL volts seem to jog my memory for helping them run colder, but platform feels like ages ago, and my memory isn't what it used to be in my youth. :D

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