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New PC build p0rn photos.

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Howardlong:

--- Quote from: dunkemhigh on April 19, 2022, 05:20:39 pm ---
--- Quote ---Useless for server stuff as it only has 32GB RAM
--- End quote ---

!

!!

My mail and DNS (and some other stuff) server has 3GB memory. Surely it depends on what the server's function is - 'server' covers as many variations as 'vehicle', and a 5-litre turbo-charged V12 isn't necessary for mowing the lawn (although it could be fun).

--- End quote ---

As already explained, I use physical servers to run multiple VMs, a couple of dozen on a single physical machine is not unusual when you're testing a typical distributed application. Hope that explains it!

PlainName:

--- Quote ---Hope that explains it!
--- End quote ---

Sure, sorry for missing the earlier bit.

free_electron:

--- Quote from: dunkemhigh on April 19, 2022, 05:20:39 pm ---and a 5-litre turbo-charged V12 isn't necessary for mowing the lawn (although it could be fun).

--- End quote ---

PlainName:
Gosh, don't they look young. And slim!

paulca:
I spent 2 hours trying to over clock the 3080 GPU.  I could get a little here and there, but nothing substantial.

It's a bit like riding a bull.  It has a mind of it's own.  Primarily the effective limiter is the power limiter. 

On default config, when loaded to 100%, it initially overshoots to 2000Mhz, slams into the power limiter and backs off to around 1860Mhz.  It fluctuates a lot as obviously slightly differing loads, different power requirements etc.  Maybe peaks at 1900Mhz and averages around 1880Mhz.

Now I can forcefully add 200Mhz to whatever it suggests and this is where it gets really odd.  It will initially spike, again to 2000Mhz and again it will fall back to 1860Mhz.  Yet if you let it run the full benchmark it produces a slightly, 2-3% higher score.

So digging a bit deeper the board (or driver) maintains a table of clocks per volt.  The driver basically runs up that table taking the clock and thus voltage higher and higher until it hits one of it's limiters.  Most likely the power limiter.  If it hits one of those limiters it steps back one step on the table and sees if that is within limits.

The software lets me lock the clock to a point on that curve, so I painstakingly tried to find it's maximum clock per watt.  Pushing the clocks higher at lower voltages until it crashed.  After an hour moving about 10 points on the graph a dozen times each, until it crashed and then back off and change to a different voltage....

I could get it to run stable at 1920Mhz at 925mV.  However, then it threw another twist at me.  Running a benchmark and it just undid my "clock lock".  Basically the 1920@925 hit the power limiter under benchmark, so it moved "left" in voltage and dropped the clocks back to around 1860Mhz again.  Grrr.

Another hour moving key voltage milestones up and down, I could find it's most efficient curve point with a slight under-volt and setting that as the TOP of the curve, resulting in slightly slower peak clocks, but much less power, only 260W and no limiters.  Which is nice and an option to keep as a profile I think for power/heat efficiency.

What I determined after these hours I won't get back... is the driver has done this all before and while I might squeeze a 100Mhz here or there on the curve, that damn power limiter will get me nearly every time.  Seeking peek clocks with that hard power limit, is a fools errand.    I even ran the MSI scanner which does similar, but much more thorough and it came back with it's best of +50Mhz Core and +100Mhz RAM... but said it was "unstable".

So why does it benchmark higher when you set a higher peak clock, even if it doesn't appear to use that peak clock?  I think this comes down to the slight under volting the +200Mhz actually relates to, while watched on a display with an update of 1 second or so, I expect I am not seeing the faster adjustments and with the given power limit, the voltage average per Mhz being a few mV lower is actually getting a few dozen more MHz here and there throughout the benchmark.

Went off to play one of the latest triple A titles - Far Cry 6.  With V-Sync set to my monitor refresh of 75Hz... the GPU, without any overclock, wasn't even hitting 100% usage.  The fans barely came on.

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