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Hardware / Re: Pc Rigs, Pics And Specs "Discussion Thread" =)
« Last post by splerdu on Today at 05:30:52 PM »
damn, I want to build one of those. But I can't justify the expense when all my 8 y/o i5 does is play youtube and pronhub. bwahahaha

lol I wasn't even planning to do this build.

My original idea was to wait till DDR5 was mainstream, but the old motherboard had other ideas. On-board stuff started failing one by one, and eventually got to throwing errors at boot.
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Lounge / Re: What's on your mind?
« Last post by wheelee on Today at 03:02:24 PM »
DIY A ladder made from bamboo ;)
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Lounge / Re: What's on your mind?
« Last post by motion55 on Today at 02:07:11 PM »
Php 3K - That's how much I just spent to change a light bulb.

The bulb was 10 feet above a stairway. There is no way to put a chair or even a stool on the steps so I can reach it.  A ladder, which I don't have, would have cost more.

I was able to change it 10 years ago risking a fall by stepping on the stairway banister, unscrewing the bulb with one hand while holding on to the banister with the other.

So I bought a light bulb changer kit from Lazada for 2K. It is just a gripper but does not include the pole to stick it at the end. For that, I used a curtain rod of the just right diameter. It cost another 1K for the 3K total.
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Hardware / Re: Pc Rigs, Pics And Specs "Discussion Thread" =)
« Last post by jojitb on Today at 08:54:57 AM »
damn, I want to build one of those. But I can't justify the expense when all my 8 y/o i5 does is play youtube and pronhub. bwahahaha
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Lounge / Re: Perpetual BABE Thread...
« Last post by Taggy on March 19, 2019, 07:51:21 PM »



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Lounge / Re: Perpetual Car Thread
« Last post by splerdu on March 19, 2019, 11:26:05 AM »


This is really fucking smart!

https://www.autosport.com/sup/news/142214/penske-says-it-was-asked-to-change-its-exhaust

Quote
There have been claims that the system on the car is purposely heavy to help lower the centre of gravity of the car, without having to rely entirely on the mandated, sealed ballast system to reach the 1395 kilogram minimum weight limit.

According to a team spokesperson, there had been a system fitted to the car that was heavier than required - however it was removed following the Adelaide 500 at the request of Supercars.

Sometimes the best engineering solution is to use something 'worse'! Who would have thought that having a heavier exhaust would actually translate into a performance advantage.

Quote
There is currently no rule regarding centre of gravity in the category, which means even with the heavier exhaust, the Penske Mustangs technically aren't illegal.

...

Scott McLaughlin is currently unbeaten in the Penske Mustang, having won all four races of the 2019 season so far.
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Lounge / Re: Perpetual BABE Thread...
« Last post by Taggy on March 19, 2019, 10:55:16 AM »




 :wub: :silly:
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Overclocking/Modding / Re: 9900k tweaking
« Last post by splerdu on March 19, 2019, 10:04:34 AM »
Playing around with offset voltages, since manual OC means the CPU will be running 1.28-1.35V all the time.

Since manual OC showed that asking for 1.35V was stable, theoretically I could go back to MCE on, VCore Normal, and VID offset -0.100 (1.45V VID - 1.35V BIOS VCore for manual OC). Problem would be when the core downclocks to 800MHz and is asking for 0.700 volts. Not sure 0.600V will be stable.

Challenge then is to find a VID offset that brings VCore low enough under load that the CPU doesn't throttle too much, but high enough under no-load so it stays stable even when in a low-power state.

-0.050V seems to be stable under Prime95 and IBT, but it is seeing throttling under sustained Prime95 (eventually the 240mm rad isn't enough for the sustained heat output). Peak voltage during overshoot is 1.411V, some 0.025V higher than with the manual OC.



Going to try -0.060V, and -0.070V later...

Measured VIDs for reference:

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Hardware / Re: Pc Rigs, Pics And Specs "Discussion Thread" =)
« Last post by splerdu on March 19, 2019, 06:39:50 AM »


Got better thermals (and CB20 results) by tweaking. Continued in the overclocking section because it's not really about the PC build at this point.
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Overclocking/Modding / 9900k tweaking
« Last post by splerdu on March 19, 2019, 12:04:56 AM »
So both Auto and Normal VCore in BIOS meant the CPU was asking for way too many volts. VID would be as high as 1.45V+. Did a manual OC by setting 5GHz and 1.35V, which led to a measured 1.28V under load (VR VOUT from ISL69138). Temps are now much more controlled and the CPU can sustain 5GHz throughout a Cinebench run giving much improved performance.



Previously my 5GHz OC via MCE would result in a score varying anywhere between 4600 and 4880 because the high volts meant it was completely limited by thermals. With the manual OC temps are just a hair below 100C and the CPU manages to avoid thermal throttling.

Running stability test now with Prime95, then it's off to find the right offset voltage to get variable VID while hopefully keeping temps under control same as with this config.
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