The Paul Hynes SR4 PSU

[lmitche]

The tracking number for my March batch SR4-19 was sent by Paul on Tuesday. I look forward to hearing this supply powering my I7 NUC when it arrives early next week.

 

My SR4 shipped exactly when Paul said it would when I placed my order in early January.

[lmitche]

On 3/28/2019 at 7:15 AM, lmitche said:

The tracking number for my March batch SR4-19 was sent by Paul on Tuesday. I look forward to hearing this supply powering my I7 NUC when it arrives early next week.

 

My SR4 shipped exactly when Paul said it would when I placed my order in early January.

My SR4 arrived yesterday. The SR4 is crazy good powering the NUC I7 endpoint. It has taken things to a whole new level of transparency and harmonic detail. Very familiar tracks sound entirely different. One can hear collaboration between the players in a way that was missing before. Tracks that sounded thin and old, have a new life.

 

Truly remarkable.

 

Gratitude to @paulhynes for a terrific product and a smooth ordering and delivery process.

[lmitche]

5 minutes ago, HeeBroG said:

Was your NUCi7 previously powered by an LPS1.2?

 

Is your SR4/19V switchable?

 

If so does the +7V account for the improvement vs LPS1.2?

 

G

Yes my SR4 is running at 19 volts.

 

As the stock Intel power supply is also 19 volts it could be that the board runs best at 19 volts rather than 12 volts. Perhaps some level of tuning or calibration is at play here. I don't know. 

 

If I can find the time, I'll lower the voltage on the SR4 to 12 volts and have a listen.

[lmitche]

41 minutes ago, shahed99 said:

@lmitche Thanks for the repot. For an ideal PSU to power the i7 NUC, how much headroom/max current supply capability is ideal? In that regard, do you think SR4 has enough of that headroom? Is something like 3.5A is enough for i7 NUC?

One amp at 12 volts will power a NUCI7 depending on how it is configured, ram size, etc. In low power mode the processor will run at 9 watts.

[lmitche]

22 minutes ago, Dev said:

Larry, have to tried powering the i7 NUC with SR-4 at 12v ? How big is the difference between 19v and 12v ?

 

Also, can a SR-4 at 12v power i7 NUC running at high performance mode (as server) ?

Hi Dev,

 

No, I haven't had the time to try 12 volts with the SR4. Maybe this week.

 

I don't run my I7 at high power on the server or endpoint so don't know the answer, but would be surprised if the SR4 couldn't handle turbo mode. Why do you need turbo mode?

 

Larry

 

[lmitche]

3 hours ago, JanRSmit said:

mitche, what DC cable did you order as well? I am about to order a SR4 19V for my nuc7i7dnke as well, but do not know which dc cable to order as well.

 

A .5 meter silver cable was ordered and delivered with the SR4.

[lmitche]

1 hour ago, Darryl R said:

 

Getting to that point, but there's a slight uptick:

 

The long term mean reversion GBP/USD rate is 1.67 , so 1.31 is historically low. 1.31 was the GBP/USD rate level in June of 2016 after the results of the Brexit referendum.

 

It's a good time to buy goods from the UK with US dollars, but that could change by the morning.