octiceps

5 hours ago, Legion said:

I'm going to get this one by Prema partner shop (the same as in footnote) so with Prema magic this software problem won't be a problem anymore (i think).

I'd take a wait-and-see approach. The Prema mod didn't fix it for the P6xxSG/SE, and no mod was ever publicly available for the P6xxRG/RE.

If CPU performance matters to you, don't even look at this laptop until the throttling gets fixed. Stock EC causes massive CPU throttling by ICCMax down to stock Turbo Boost or lower whenever GPU is loaded, making overclocking worthless. It's the same bullcrap that affected the last two generations of this model.

4 hours ago, blabba said:

Unfortunately, while the 650m SLI is DX11 capable, it's not actually very playable.

This is not true at all. Overclocked 650M SLI runs SLI optimized DX11 titles up to 2015 at 1080p60 high to very high settings. The biggest limitation is the 2GB VRAM.

4 hours ago, blabba said:

If you can, enable dx10 in your games. With the upgrade to windows 10 newer nvidia drivers just assume to default to dx11.

DX10 was a failure and so few games use it, it's not even worth mentioning. Vast majority are DX9 or DX11.

Here is what I'm getting at 1080p max settings:

Vulkan - 76 FPS

OGL - 123 FPS (+62%)

And besides the the shitty performance, Vulkan works maybe 1/20 times. Otherwise it CTD instantly after launching game.

That's way too vague. I meant an OGL vs. Vulkan FPS comparison.

8 minutes ago, xan326 said:

What kind of connector does the ultrabay use? I don't recognize it and can't find information on it anywhere. Also; does anyone have, or can make, schematics for the ultrabay gpu?

Ultrabay uses a proprietary PCIe 3.0 x8 connector

21 hours ago, Enferlain said:

Do you have some info on any performance gains in actual games?

650M SLI stock - 790 MHz core @ 1V, 1000 MHz memory

650M SLI OC - 1150 MHz core @ 1.05V, 1125 MHz memory

Sleeping Dogs: Definitive Edition

42.2 FPS stock vs. 57.4 FPS OC (+36%)

Metro 2033 Redux

39.74 FPS stock vs. 52.88 FPS OC (+33%)

Metro: Last Light Redux

40.21 FPS stock vs. 53.14 FPS OC (+32%)

2 hours ago, SniperTNT said:

I currently have your modded VBIOS for a GTX 980M, and I want to overclock it slightly. I have already increased the clocks with nvidia inspector, but I want to have the card load these clocks automatically since now I know that they are stable.

 

Could you modify my VBIOS at P[0] so that the offset for base clock is +127? I'm not interested in doing anything with the voltage as it's not needed.

 

Thanks.

You should be able to do it yourself with Maxwell 2 BIOS Tweaker.

21 hours ago, bootleg2580 said:

What do you mean sbios? Like as in only the prema splash screen is the bios not the vbios? @octiceps

Yes. Prema splash screen is if you've modded sBIOS. If you've only flashed vBIOS, splash screen stays the same.

2 hours ago, bootleg1 said:

@Prema I have used your 980m 8gb vbios v2 flash on my alienware r3 17 4K windows 10, while i was doing it the command prompt seems to close so fast i couldn't read it telling me if it succeeded or not. i checked nvidia inspector and it shows my vbios is modified, but your splash screen doesnt show up when i start my computer does this mean the vbios flash didnt work? 

That's sBIOS not vBIOS

1 hour ago, Syb said:

On my side the fans were less noisy so the performance is better, less usage , less heat

That makes no sense.

Well, after the patch Doom now works in Vulkan without CTD. But it still runs much faster (50%+) faster in OGL.

What I've noticed is that in Vulkan, CPU ms/frame and thread utilization according to the in-game performance metrics is much higher than in OGL. For some reason, Vulkan uses a lot more of my CPU, not less. This is probably why performance stinks.

Could be. A 12GB game patch was pushed out today. Changelog mentions a CTD fix for users of current Nvidia drivers. I'll try Vulkan again tomorrow.

So now that Vulkan is working for you, how much faster does it run compared to OGL?

980M here also. Could be an Optimus or general mobile GPU issue. After updating to 368.81 I tried Vulkan but OGL ran over 50% faster. Then I cleared my local user temp files in Windows (there was a VulkanRT folder in there with the other junk) and now Vulkan doesn't work at all. Every time I launch Doom it CTD immediately at the first menu.

If anyone has purchased this, can you post a review? Thanks.

Edit: Also does this work with the laptop internal screen, or only external monitor connected to the GPU? And what's that 20-pin connector, is it for powering the adapter?

Call me skeptical, but I have yet to see screenshots of perf metrics and photos/videos of the setup in action? $100 ain't chump change.

10 hours ago, cool dude said:

From what I gathered, Prema helped some guy with a bios mod, possibly an experimental non-public version, and the guy just posted a link to the mod on another forum, no credit, no Fs given.

Even worse. This mofo plagiarized Prema's work, reversed and copied it bit-by-bit then posted it on the Internet as if it were his own creation.

16 hours ago, Arbystrider said:

Does it just ramp the fan to a speed that the fan normally doesn't reach even when the machine is thermal-throttling? Then shuts the fan off, then puts it back to that speed, and repeats?

Yep. 9 seconds full blast, 1 second off, repeating. Fans don't spin at full speed otherwise.

17 hours ago, Prema said:

As a result of the unrighteous actions of Jacob Rosenberg (user @Exec360 ), who couldn't resist to break his promise & betray my trust, the public release of the Prema Mod (v)BIOS for all 49 Clevo Skylake gaming models, which was scheduled for the first of June, is hereby postponed indefinitely.

 

Prema Out!

DMCA takedown his sorry ass. 

@Prema I'm not sure if this is a bug or expected behavior, but sometimes after exiting a game, the GPU fans won't stop spinning at high speed, as if dGPU is still under load, even though Optimus has put it to sleep. Fans only stop spinning (abruptly) if another dGPU-activating app is launched. This happens maybe 1 out of 4 times, other times the fans spin down like normal. Using Prema Mod v2 on a P650SG with the "Cool" EC.

OK, addendum to the above. Turns out this EDP throttling of the CPU under GPU load is a stupid "feature" Clevo built into its notebooks' EC firmware on even the mighty P870DM! Here is a video from @Mr. Fox showing the exact same behavior on his i7-6700K:

Of particular interest to me, I noticed @8:15 in the video that HWiNFO64 showed, under its Performance Limit Reasons section, Yes to the following:

IA: Electrical Design Point/Other (ICCmax, PL4, SVID, DDR RAPL)

RING: Max VR Voltage, ICCmax, PL4

Those are the exact same limit reasons that appear when my P650SG is throttling. And it corresponds with what lights up in Dufus' Limit Reasons tool as well since IA = Core.

According to Mr. Fox, a Prema EC is what fixed the current limit throttling for him. Just as I suspected.

On 5/9/2016 at 0:40 AM, Rinku said:

EDIT : I figured what caused me premature throttling. It was the thermald package, installed by default in Ubuntu 16.04. I just removed it and my clock stay at 3.3 Ghz until something like 98C. Then it varies from 3 Ghz to 3.3 Ghz. Though I'll still repaste with CLU or MetalPads and i'm still interested in overvolt undervolt under Linux. And when both CPU + GPU are in load, my CPU clock stay at 2.6 Ghz, as you mentioned. Is the 180w PSU guilty ?

Nope, it's not the PSU's fault. Even when power draw at the wall is well below 180W (measured with a Kill A Watt), CPU is throttled down to base clocks under GPU load. As you can see in my screenshot above, the throttling is caused by EDP (electrical design point AKA current) on core and ring (CPU cache). The EC firmware is current limiting the CPU under GPU load. It's a design flaw with this and several other Clevo models. Maybe @Prema can elaborate further. Bigger PSU (I'm using the 200W P6xxRx one), BIOS settings, XTU, ThrottleStop, etc. don't help; I've tested them all. The only thing which helps slightly is undervolting, which makes the CPU draw less current and thus Turbo Boost a couple hundred MHz higher. A modded EC is the only solution.

14 minutes ago, Rinku said:

Thanks for the reply. Isn't there any way to undervolt the CPU through the BIOS as Prema Bios is unlocked ? Or if anyone knows how to undervolt on Linux, I'd appreciate it.

 

I already tried to repast (using Noctua NT H1), but it didn't really help, the temps still reach 90 - 95C way too fast.

Nope, no voltage adjustment in the Prema BIOS.

Supposedly NT-H1 isn't ideal for low-pressure bare die heatsink mounts like in laptops as it pumps out rather quickly. I'm using CLU myself but Thermal Grizzly Cryonaut, IC Diamond, and GC-Extreme are good nonmetallic TIMs you can try.

Even with CLU and undervolt though my CPU still gets over 85C just playing CPU-intensive games like PlanetSide 2. It's 10C cooler with max fans, but I don't use max fans because it's too loud. This laptop's CPU cooling is not as good as its GPU cooling.

On 5/7/2016 at 11:49 AM, Rinku said:

Hi all ! 

I have a temperature problem with my Clevo P670SG. My processor heat a lot and the frequencies start to get lower when the temperature reach about 85C. I use the prema bios and I'd like to know if there is any tweak in the bios to reduce the temperatures (without lowering the turbo clocks) or to prevent the clock scaling by setting a higher limit for temperatures. 

I'm using Ubuntu but the problem is the same on Windows 7. 

 

I join a screenshot of the temps during a cpu test. The weird thing is that the temperatures get really high within a second after the test start. And then the clock is auto adjusting to keep the temperatures 'cooler' (the green sensor is my GPU).

I have a 4710HQ. 

Thanks !

 

Edit : A second pic showing my temps during a quick gaming session (Skyrim through Wine) :

 

 

Max fans (FN+1), undervolt, repaste. Core and cache should both be good for -50mV which should reduce temps by about 5C. But Idk what software exists in Linux to undervolt the CPU as ThrottleStop and XTU are Windows-only.

Although your premature thermal throttling is weird. It shouldn't throttle until any core reaches 98C. On my P650SG, frequency stays at 3.6 GHz in CPU-only Prime95 AVX load even well past 90C. Example:

In CPU+GPU loads though different story as CPU will stay at base clocks (2.6 GHz) due to overall system power limitation in the EC firmware causing EDP throttling. But again, undervolting reduces power and current draw so CPU boosts 200-300 MHz higher than base:

20 hours ago, Protegex said:

currently bios is 2.00...as i try to upgrade to 2.02 using insyde i got a dc detect error : (... need help ooo

That means u need battery to be installed