JadeRover

OK, no choice unfortunately, you must get a 3k motherboard + 3k cable for a 4k upgrade

Yes, the m1000m MXM card was shipped in both dell precision 7710/7510 and zbook 15 g3/17 g3. The display outputs through the MXM slot to all the connectors of the laptop are implemented in the vbios. Flashing the bios that you found working would have made this first card work.

@loopster https://notebooktalk.net/topic/225-precision-m6700-owners-thread/page/6/?&_rid=2023#findComment-61191 Here you go, this guide is for the m6700 DC screen. I applied it on my m6700 and the 10 bit mod worked. However I couldn't tell the difference with it on or off, even trying specific 8bit vs 10 bit downloaded videos. Also the DC screen heats up a lot at 100% brightness. Probably the interposer board that is working hard.

Hello, This guide will explain how you have to actually modify a pascal/turing vbios with pascal mobile tdp tweaker in order to not get error 43 and black screen. latest vesion 1.21 : https://github.com/LaneLyng/MobilePascalTDPTweaker/releases/download/1.2.1.0/Mobile.Pascal.TDP.Tweaker.1.21.zip tools needed : any hex editor -> HxD for example I have embarked on a long vbios modding adventure. End goal : custom display tables in vbioses utility -> Extremely useful for MXM gpus -> looks quite possible thanks to released nvidia documentation but I must invest lots of time in research into this (my time allocation will vary greatly week to week...). Side goal : create a core + memory overclocking utility -> Possible as well, simpler than the display table Anyways, early on I noticed a flaw in the pascal bios tdp tweaker in the way it calculates checksums : it only corrects the checksum to the correct value if your vbios has no header ! If you use a vbios with header the app will calculate a wrong checksum and you will get error 43 or black screen as the security chip on the GPU will refuse to post. Step 1 : Check if your vbios has a header -> Open it in a Hex Editor and see if the starting string is "NVGI" -> if no header, you can mod the base directly in TDP tweaker with no extra steps. example of a vbios with a header : Step 2 : Remove the header and keep it in another file, select all the first lines of the vbios untill you see the string "UxxxK7400". In my case the actual vbios data starts at offset A00 -> Save the modified vbios as "vbios_mod_applicable" Step 3: Open this "vbios_mod_applicable" in mobile TDP tweaker, apply your edits and save the bios, now the checksum is correctly calculated automatically when you save this modified version. Step 4: Open the TDP moded vbios in a Hex Editor and reinsert the header at the very beginning of the vbios. Make sure the file size matches between the OG vbios and the TDP modded one. Step 5: Flash the modded vbios with an external programmer -> nvlashK and OMGflash will not work. You need to have a flasher handy anyway if you are attempting a vbios flash that risks bricking your card. Step 6: Enjoy higher TDP/other changes you applied

You can get a dell 240w charger to plug into the barrel jack of the zbook 17 g2 + add 100k resistor between the ID pin and the V+ pin so that laptops sees it as 200w charger. Then shunt mod the input power resistor so the system won't shutdown from over current at >210w. You should be able to run 230w load with 150w + 80w cpu. However you will probably need a heatsink mod as single fan cooler will quickly be overloaded. Luckily people using the zbook 15 g1/g2 frequently do this by adding a fan in the ODD space + extra heatpipes.

@Vladka76 Yes, this should work, nice that 8770w has DP_D -> eDP, this will make GPU compatibility greater. I noticed a trend that up to zbook 15 g3. All 15 inch HP worstations with MXM3 connector have DP_C -> eDP which is a shame = special HP vbios needed or mac rumors vbios needs to be used (best card is the P5200). If not, there will be no picture on LCD. Unless you have a vbios that has standard DP_C -> DP (standard display port), then a backligh mod can be performed but screen is stuck at 100% brigthness. Couldn't find boardview, schematic is preffered tbh so good that you have it. I think you will need to mod the specific "Dream Color" cable that came with these laptops, the standard LVDS cable won't have cables connected to the pins associated with eDP, they will be unpopulated as why would your LVDS cable need to carry eDP wires ? Alternatevely you could repin a LVDS cable to connect to the eDP lines. What I think is easier is : getting DC cable, cut off the end that connects to the interposer board and solder a standard 40 pin ipex connector used by eDP displays (if cable length is enough to connect to display, it should be). Only problem is that eDP cables used or high bandwidth, which is the case here, need special coaxial cables that are HELL to solder (experienced this the hard way when trying to mod a zbook cable). These are usually soldered with lasers in factories D= Might be worth it to find a manufacturer who can build you the cable, on tabao or even aliexpress, sellers you make custom cables should offer it as it isn't much work for them. PS : Your pinout is correct, but you do need pin 44 that is eDP HPD (hot plug detect), required for eDP, not sure what the MARS signal pin is, you can trace it back on the schematic, probably a GPIO pin to tell the PCH or EC chip that a DC display is present in the system.

I double checked again on the boardview of the 8570w motherboard and this is not the case The motherboard never converts LVDS to eDP, not possible, same for the cable or interposer board, the technology to convert LVDS to eDP came after these laptops were built. Famously the thinkpad T430 'IPS' mod uses a third party LVDS -> eDP converter. On the screenshot I showed just above, the motherboard LCD connector has both eDP and LVDS on the same connector, both coming from the GPU in the MXM slot, in a direct line, no conversion going on in the motherboard. The eDP cable you are talking about doesn't convert any signal, it just connects the eDP found on the motherboard screen connector to the eDP display. A LVDS cable that frequently came with these models connects the LVDS found in the motherboard screen connector to the LVDS of the screen. I talked about how zbooks do this. All zbooks, (starting g1, 15/17 models) have only eDP on the motherboard screen connector. After that, the cable carries the eDP signal to an interposer board -> see my post at the top of the page showing pictures of such interposer that converts eDP to LVDS. The problem is that the 8570w never shipped with a standard eDP cable that could connect into a modern eDP display. It was made to connect to the 40 pin eDP interposer board used to communicate to the Dream Color LVDS LCD. On the pictures of such interposer board, the connector that get's data from the motherboard is non standard to eDP display. Good news is that, unlike thinkpad T430 that needs an added converter board to get modern eDP displays working, 8570w just needs a modded cable that has it's end modified so that it can connect to a standard eDP display connector.

Some 15.6 and 17.3 inch laptops of that era (ivy bridge + Haswell) used eDP to LVDS converters so that they could connect to LVDS displays that were more common at the time. You are in luck as your model came with a 3K option, what you have to do is hunt down that 3K eDP cable as it can only connect to a 3K eDP display (LVDS tops out at 1080p). Then, you'll have to check if the connector is 40 pins 0.5mm pitch or 40 pins 0.4mm pitch, after that you can buy a 40 pin display of your liking (making sure the pin pitch + connector position will work with the 3K cable). You can chose 1440p 144Hz for example I would not go up to 4K resolution as older systems can't deal with the bandwidth if the internal eDP connection is limited to DP1.1 (not always the case : happens if there is mux switch in the way, example precision M6700 has no mux switch = DP version limited by MXM gpu installed). If you really want 144Hz, the safest way is getting 1080p 144Hz as even if it is DP1.1 limited because of mux switch, you can still get 154Hz max

There is some (understandable) confusion regarding that. M4800 has 3 different motherboards with 2 different QHD capable cables (giving 4 lanes of eDP required for running a QHD/4K display): MOTHERBOARDS : -one "early" one (2013) with LVDS connector (JLVDS1) for the standard display - LA-9771p - WITH JEPWR1 connector SOLDERED motherboard ! has option for a QHD eDP display using the appropriate LVDS QHD cable. See following picture : - one "early" one (2013) with LVDS connector (JLVDS1) for the standard display - LA-9771p - WITH JEPWR1 connector NOT PUPULATED on motherboard ! has no option for a QHD eDP display UNLESS you modify this motherbard by adding the missing JEDP connector and 2x100nf capacitors. Then you can use the appropriate LVDS QHD cable. See following picture : - one "later" motherboard (2014) with eDP connector (JEDP1) for the standard display - LA-9772p - has option for a QHD eDP display using the appropriate eDP UHD cable. See following picture : CABLES : - "LVDS QHD" cable -> it has extra wires going to JEPWR1 next to the motherboard LVDS connector. See picture below : - "eDP UHD" cable -> it does not has extra wires going to JEPWR1 next to the motherboard LVDS connector. See picture below : Schematic extract showing the wiring of jEPWR1 that brings aux edp signales requires for eDP display. The 4 lanes of eDP are merged on the JLVDS1 connector. TLDR : - If you have the LVDS "not QHD capable" motherboard : you can't upgrade to QHD/4K unless you soldered the following to the missing spot on the motherboard : connector + 2x100nf capacitors. Then you can upgrade your standard LVDS display to eDP with the "LVDS QHD" cable - If you have the LVDS "QHD capable" motherboard, you only need the 'LVDS QHD" cable, however I believe that all the QHD capable LVDS motherboards had a QHD screen out of the factory - If you have the eDP motherboard, you only need the "eDP UHD" cable. I think this one is harder to find than the LVDS QHD cable unfortunately. Hope this clears things up !

Welcome to the forums ! Nice modding adventure you've started there, 20 bucks GPU upgrade on a laptop is always nice =D Anyway, I was interested in you saying that this first vbios didn't work for you. I checked the 8570W boardview and indeed the internal display connector connects the eDP to DP_C of the dGPU (see screenshot). This arrangement is non standard, most MXM GPU vbios have eDP connected on DP_D. HP has a few MXM laptops that have eDP on DP_C -> zbook 15 g1/g2/g3 + zbook 17 g3. Meaning if you want to do a GPU upgrade you need to use a GPU that has eDP on DP_C (if not you'll get a black screen). The safest way to do so is to get an MXM gpu that originally shipped on the models I mentionned + flash the appropriate HP bios. Moreover, iMACs also use DP_C to drive the eDP display, vbios found on post #1 of this page for the mentionned GPUs should work for your laptop as well if you want to upgrade further down the line : https://forums.macrumors.com/threads/imac-2011-maxwell-and-pascal-gpu-upgrade.2300989/ = more GPU upgrades possible. You can also use a backlight cable mod if your GPU has standard DP on DP_C (not eDP).

I don't think so, the 4940xm should beat the 4900mq at all power levels since you can undervolt it more than the 4900mq before your system crashes. If you are power limited for the whole system (which seems very unlikely with a 240w charger), the 4900mq won't perform as well as the 4940xm in any case. Anyway if you ordered the 4900mq, give it a try and see if it can do more than 3.7 since that is your initial goal.

And at what power did they achieve this do you know ? My guess is probably 60w+ to do 4ghz all core on the 4900mq as my 4810mq requires 70w to do all core 4Ghz and it's a tier lower. Your problem is the power limit so I'd stick to the 4940xm

Well that's just a number given by intel for the design TDP of these CPUs so that manufacturers can make heatsinks accordingly. What is important is the voltage per clock ratio that each chip can do. On my zbook 17 g2 with i7-4810mq, when pushing all core to 4.0Ghz it hits 70w. It would be wiser to stay with the 4940xm that has much better silicon meaning you can undervolt more before you crash meaning higher clocks for the same power. All haswell mobile quadcores have the same physical die (some with more cache than others), the way intel names CPUs is that those that can be fed less voltage (=less power) for the same clocks achieved are marketed as the XM chips. For example, this same 4810mq will crash at -20mV at all core 4Ghz. The 4940xm has way better overclocking headroom than the 4900mq. I'm ready to bet that the 4940xm reaches higher clocks than the 4900mq in your power limited system because you can get 3.7 Ghz all core @ -80mv witht eh 4940xm whereas the 4900mq will probably crash at -45mv = stuck at 3.5Ghz all core.

Yes, that is because you are being power/current limited. By undervolting, the CPU can reach higher clocks for the same power/current, you need to investigate all power limiting factors, but in your case it sounds more like current limit as throttlestop shows "EDP other" limit reason

That's a easy fix, solder big wires from the main power rail (19.5v after 2nd Mosfet) to the power pins of the GPU, GPU is fed main power rail through the MXM slot anyway. Even up to 4.3Ghz all core see the comments at the bottom of this page : Intel Core i7-4910MQ Mobile processor - CW8064701474105 / BX80647I74910MQ This is because this is a "900" series CPU, just like 6920HQ and 7920HQ, these have +6 turbo bins VS the +4 on other i7 mobile CPUs But it sounds like you were hitting a hard power limit/current limit so bumping the turbo bins won't do you much good. Power limit editing on my m6700 worked great, can't help you more from what we said in PM with the m6800 as I don't have the machine (nor the m4800 that should have a similar implementation of power/current limit in the bios)