*** Official Clevo Sager NP9155 / P750TM-G / P751TM-G Owner's Lounge! ***

Anyone worried about the power cable hanging out of the back?

I'd like to put this up on a laptop stand like this, but I'm afraid of the cable getting pulled down by gravity and wrecking the power-hole.

 

Any stand that lifts it up is fine. The cable is solid once in.

 

@Antriram Can you share what your temperatures are like? Many thanks.

 

Thanks for sharing. There aren't a lot of reference points out there right now. I posted some in the P750TM-R thread from Eurocom. Can't find many others, but would love to see benchmarks with the various bioses and mods out there. Unfortunate that the graphics card still isn't registering properly on 3DMark for comparison.

Looks like you have some room to improve the graphics score by quite a bit with adjustments. The physics and CPU scores on the other hand look surprisingly good given you have it all at stock.

On a related note, is it comfortable to use with the heat and noise?

 

It's been a while since your post regarding the DPC latency issue, did you manage to fix it?

I'm interested because I'm looking to replace my Clevo P750DM which died (I won't go into the details but it was my own fault, not bad quality). I also need it for music production, so DPC latency is one of the first things I worry about. With the P750DM I managed to get DPC latency pretty low by installing different versions of the NVidia driver, and tweaking the power settings. I find what works on one system doesn't work on a different system, which is really annoying if you just want to be a music producer and not a computer technician, not to mention the expense should you end up buying the wrong computer DPC-wise.

I like the idea of having a single machine to maintain that can work as both a laptop and a desktop, without having to trade processing power for portability, so in that sense the P750TM1 is very appealing. Where I am (China) I can only buy the bare machine, and then install the CPU, RAM, storage and graphics separately. Basically, I have no way of knowing how the system will perform until I've shelled out all the cash.

Two days ago I dropped by an official Xiaomi store here where I live and they have an i7-8750H gaming laptop (the "Mi Gaming Laptop") which of course isnt' anywhere near as powerful as an i9-9900K, but the store guys let me install my DAW, ASIO audio interface drivers, LatencyMon and a bunch of other software to test the thing in depth. I was there for 3 hours running tests and I'm still not done, going back probably tomorrow to see how many instances of U-he Diva it can take. On that system DPC latency was around 115µs steady with no major surprises, which seemed reasonable, because on some systems you may get very low *lowest* latency but then it's the random spikes that make it unusable. Being able to test the complete system before I buy and having the confidence that DPC latency won't be an issue somehow appeals to me more than having twice the amount of CPU muscle, because for me that means the difference between being able to make music and not being able to make music.

On desktop PCs I've been able to get DPC latency down to a steady 5µs, so I dunno what the heck is wrong with laptops, but it's a shame. I reckon manufacturers either don't care or don't know about the whole DPC latency thing.

 

Which temps do want to know exactly ?
GPU goes up to 82 or 83 degree using Valley benchmark in a loop or Witcher 3.
Cpu stays most of the time around 55 to 65 degree with low CPU load.
For example at the moment steam is downloading some games, origin is downloading too, cc2.0 is open and I have some Firefox browsertabs open = 60 degree +/-5 degree.

Well it depends.
Doing normal stuff is ok for me, I changed the fan settings to lower rotation.
Some games are not that loud but some are realy loud.
Compared to my old P505 cori i7 quadcore with GTX 970 mobile notebook it is realy loud.

What I want ot try just for fun is to set down the max CPU ration and the GPU clock in control center 2.0 and maybe some undervolting.
But it is not that important for me, using the machine the way I do is not to loud and when I want to play games I have no problem with that noise.

I use the machine for surfing (Firefox), Photoshop CS6 + plugins, Premiere 14 and gaming.

 

So the cable constantly pulling down / getting tugged occasionally won't hurt the input? I've been told if this ever breaks it's impossible to fix (and I never want to send my machine for repairs by mail).

Sorry for double asking; I just want to be confident about this.

If you like I can test my machine with LatencyMon or DPC latency checker; I've got an 8700k and 1060 gpu.... not sure I've even got the right GPU drivers; assumed it wouldn't affect latency (usually I use a large buffer).

 

Any cable can fatigue, so long as you lay out the system properly it should not tug.

 

I don't have that exact stand, but what I have is more of a lapdesk that has a padded bottom and I place my cooling pad on top of it. I also worried about the weight hanging down from the power cord so what I did was velcro the cable on one of the back corners of the cooling pad legs as a strain relief. Now if anything pulls it hits that velcro part not the connection in the back.

I pick the whole thing up with the power brick hanging and no tension is ever transferred to the actual power jack in back.

 

Benchmark @ Notebook: DTR 15, Core i9 9900K, 64 GB RAM, RTX2080
No OC and no undervolting.

 

cool. any throttling or full boost at 4.7 ghz through the whole run? lots of background processes? also, whats your ram speed? stock on desktop is around 2040-2070.

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I did not check thottling. I did not run HartwareInfo log or something else.
It was just a quick test.
Here are some mor infos to RAM, CPU, Bios and GPU

 

Hmm those seem a bit low @Johnksss or is it correct for factory Clevo BIOS?

 

It's actually not low for "Factory Manufacture" stock.
It is low for "True" Stock.

And for R20, that is way to low for anyones stock.

And he is also on old ME as well.

P870TM1
http://forum.notebookreview.com/thr...lounge-phoenix-5.826848/page-31#post-10876487

 

I did some more testing yesterday.
I installed Throttlestop and tried to undervolt the CPU a bit.
After some quick tests I found out -160mV is too much for cinebench but -125mV or -140mV is working with prime95 and cinebench and Trials Rising (played some hours).
Hardwareinfo and Throttlestop shows when running cinebench a lower CPU multi than the 47 expected for all cores without undervoling.
Throttlestop shows that the CPU is limited to 100 watt (CC 2.0 shows someting like 120 or 130 watt ?).
After undervolting the CPU I got 4658 points in CB R20 and the all core multi was higher, not sure if it was 47 or 46.

 

Short power and long power targets, not surprising 4.7 is not being maintained on 8 cores.

 

Anyone know if this machine is grounded through the plug?

I'm worried about large electric fields (I get 1000 V/m when plugged in, and only 50 V/m on battery).

 

I believe so (certainly on the British plug) but the machine consumes a lot more power when on AC. Are you getting shocks or interference?

 

So I did a crazy thing and bought this model with a 9900K + RTX2080. Posting here for now since that P750TM-R thread isn't getting much love.

Finished a clean install, and found that it came tuned from the vendor with:
1) - 100mV offset
2) PL1 set to 65000 (65 W)
3) PL2 set to 100000 (100 W)
4) DDR4-3200 MHz already tuned at 1.2V (Kingston)
I haven't pulled the heatsink to check, but it should be delidded with a RockIT IHS.

First Cinebench runs in my life gave me scores of ~1840. Looked like it was holding ~4.2-4.3 GHz and ~40-50 C.
Increasing PL1/2 to 100000/125000 brought me up to 1993 and looked like it was holding 4.6-4.7 GHz. Bouncing off PL1 limit.
Increasing PL1/2 to 125000/140000 didn't change much (1994). Still bouncing off PL1 limit. Also getting warm (screenshot).
Throttlestop is off, just using it for monitoring since HWINFO made it look like I was getting higher clocks.

Using this as a reference ( https://www.reddit.com/r/intel/comments/a08x42/9900k_overclocking_undervolting_fighting_the/) I guess I should be hitting ~2050 at 4.7 given that it's already somewhat tuned. I don't really know what to expect in this box. The limit of my software tuning experience is using the FIVR window in throttlestop to keep my w230ss from burning up. But I guess you've got to start somewhere.

On the bright side, apparently I have some control over power limits. Though my attempts to increase "VR Current Limit" don't seem to be taking.

The factory settings (undervolt, power limits) are actually great for my practical use. I pulled the trigger based on @jaybee83 numbers and hoped to hold 4.4-4.5 GHz all core with reasonable temps. So that's looking promising. The 9900k is really amazingly efficient at lower clocks.

Hopefully more to come as I figure out what I'm doing.

 

As a pure benchmarking machine it will not be optimal due to limited cooling of this form factor/design. However in practice it is super capable, with all the drive slots and CPU/GPU capability as larger machines. It's been super stable and I still love mine that "only" has a 8700K/1080 combo in it.

I'm tempted to go to a 9900K mainly for times like now when I'm compressing hundreds of videos, but seeing as even with my 8700K its only maxing out around 80% cpu use I'm not sure more cores/threads would do me any good.

 

Depends in the program generally, have you looked at the load pattern?

 

Looks like I can borderline hold stock clocks in Cinebench R20. Got toasty with max fans.

Took me a few tries to realize that my -2 AVX offset was locking me at 45x (scores of ~4600) instead of 47x (scores of ~4775), where Cinebench R15 didn't use the offset.

That said, after a bit of use my goal for this device has upgraded slowly from "hope for 45x" to "maybe I can find settings that let me keep stock clocks." The new cooling is fantastic to the point where I have some thermal headroom above stock to try and overclock.

 

Undervolt time

 

I'm not getting shocks, but I measured my body voltage, and it goes up when I touch the machine.

Also, the voltage goes straight through into my headphones, or USB keyboard (whatever I plug in), so if I listen to music while plugged in, I'm getting 1000 V/m fields right in my head!!

 

Would it be possible to use a portable charger with this?

If I did that, could I bypass the brick (externally batter plugged direct into the laptop).

Could I get full performance with an external charger?

 

I'm not sure what you mean by unhealthy?

 

Electric fields signal the Voltage Gated Calcium Channels in our cells, which causes a bunch of other effects; mainly letting free-radicals travel into the cells.


I'm wondering if I can get an external-battery that'll work in place of the power-brick.

 

It's interesting your headphones are plugged into another port, have you tested somewhere else?

 

Do you mean have I tested the laptop in different places? I've tested it in different rooms in the apartment.

I've also tested running my audio device from different USB ports and my headphones directly in the laptop. In every case, I get large electric fields.

Even if I touch one hand on the laptop, I'll measure electric fields traveling through my body.... so anything touching the laptop while it's plugged into the wall.


Even if I turn the power-bar that the laptop's plugged into *off*, I get the electric fields, as long as it's plugged in.


So I think the best answer is a universal power supply (or a battery that can bypass my power brick and go straight into the laptop).

I guess I need as many watthours as possible to keep it running, and I'd need exactly 19.5V if I'm bypassing the brick (although to bypass the brick, I'd need a custom connector. We can't simply by those connectors, can we?)

 

Same or higher amps, same voltage (+/- 0.5v), same polarity and connector.

What brick do you currently have?

 

speaking of amps meaker, u got any info on the amps that the P751TM mobo can deliver to the cpu socket before tripping OCP?

Sent from my Xiaomi Mi Max 2 (Oxygen) using Tapatalk

 

Not something I have at my fingertips, i would have thought that's fairly easy to test for though.

 

138A

 

hm ok thats kinda disappointing... my DM can deliver 120A, i would have expected much more than a meager +18A boost in the TM

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I believe the P870TM has higher limits, however per my testing that is the limit of the P750TM/P775TM mobo.

 

i set my machine up to cap amperage at 125, thats the max i can do before my machine switches off during cpu load. so that closes the gap even further... will have to check what those 13A would mean in terms of clocks.

edit: ok, so going by this data here

Link:

and extrapolating the amperage fed to the cpu by dividing its wattage by the VCore used (i know this isnt accurate cuz wed ideally need the voltage fed to the whole package, not just the cores, so this is actually best case scenario!)

the result: going from 125A to 138A max. would allow me ONE lousy multi more of stable 24/7 clocks *lol* so thats going from 4.6 to 4.7 ghz all cores... meh

Meaker, if you or anyone else has data on the P870TM, please let me know

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When the P750TM/P775TM reaches the 138A limit, it doesn’t shut off, it just throttles.

 

yeah i know, thats also the stock behaviour on my DM. Prema removed all amperage and temp limits so I could check and see how far I could take it Thats why i manually had to configure an amperage limit in the bios at which point it now power throttles.

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On stock BIOS my CPU would TDC limit throttle at 108A. With Prema mod, I hit the limit of the VRM at 138A.

 

ah ok, good to know the regular Prema Mod has the power limit still enabled and lets you adjust the TDC limits, so basically that was an extra, to remove any and all limits, with only the hard coded OCP limit shutting off the machine once i go above 125A.

 

I run my 8700k at 5ghz 24/7 and the vrm handles 5.3ghz over short bursts when power limits are removed.

 

oh i can do much more in short bursts, i validated with cpu-z at 5.2 ghz all cores but 5 ghz 24/7 would be a no-go, im guessing two extra cores does that to you...

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I thought we all had the same brick? Mine's 19.5V, 4.4amps, LITEON

 

4.4 x 19.5 = around 86w, are you sure?

 

The display lid of this new model still isn't as sturdy as I'd like it to be, so added a TA6V (grade 5) titanium sheet:

Spoiler: re-inforced display lid

1.) Deflection measurement (about 5mm):



2.) Marking out the chevron-like form of the top part of the lid:



3.) An angle grinder is necessary due to the large size. A common hacksaw wouldn't reach the full length of the cut:



4.) The angled top and bottom ends have to be cut one half from each side:



5.) Cutting and filing done:



6.) Affixed to lid with superglue, aided by bunch of clamps. No measurable deflection henceforth:



7.) Spray-painted and sanded it down a bit. Bit of a rough look, but that's just my preference:

 

Wow, titanium armor. That's an impressive mod.

What are you protecting the lid from? Rough travel that might warp your screen? It's already a pretty solid chassis.

 

That is hardcore, my man.

Batman gets a new bulletproof batsuit @jaybee83.

 

dayum, bulletproof batsuit indeed!

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Nice, very Ironman-I like

You might consider adding thin strips of black/colored duct tape to the edges of the sheet just for aesthetics.

Is the center of the sheet a bit raised from the center ala Alienware?

 

how much weight did it add to the machine? also, whats the haptics like when opening/closing the lid now, as compared to before?

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