SuperMG
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Finally the new RTX MXM cards will work in our laptops!
SuperMG replied to SuperMG's topic in Components & Upgrades
Hello. Still no news about ZRT's VBIOS or about any VBIOS that can make the 4080/4090 to work normally without EDID manipulation... I also got the RTX 4070 to work on a Dell Precision 7720 without any issues, needed to do some heatsink mods and use my flex FPC cable to enable eDP backlight support. All display outputs work. (mDP, eDP, HDMI) Some cables are still available for purchase on eBay! -
https://drive.google.com/file/d/1l13P6GNHi3hWIna5HTG3mWBfl_ebePoW/view?usp=drivesdk https://drive.google.com/file/d/11J6h_73VVxpgkYjJSPEq__wUkjG0siZy/view?usp=drivesdk Also is it normal, when I restart I can no longer undervolt? Also when I downgrade the BIOS, when I restart again, another bios update is happening?! Fix: Enable UEFI Capsule Firmware Updates = OFF in the BIOS.
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Hello. Managed to get 415 in single-thread and 2222 in multi-thread in CPU-Z on the i7 7820HQ with -100mV, max temp 70c no fans kicking on
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Finally the RTX 4070 works fine without any temp issues. Same for the CPU. No more craziness overheating from 40c to 99c. Max temp was 72c and not 100c! Here's a picture on where to cut in order to make your XVSION and ZRT RTX 4050/4060/4070 to work in your Dell Precision 7710 and 7720. I'm thanking X-VSION and ZRT for making such incompatible GPUs in terms of heatsinks! We need to either Dremel for hours or just add a copper plate of 1mm with thermal glue (only for separate heatsinks) DP, HDMI and eDP (using my flex FPC custom cable) are working in PEG mode. USB-C display is not working? (Lacking drivers maybe?) By the way, I did downgrade the BIOS but I still can't manage to undervolt, do I need to edit the UEFI variables using grub?
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Hello. Same height. No difference
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Thanks a lot for telling me how to undervolting. I tried without GPU, without copper plate. Only CPU. Managed to get the "famous" 40c to 99c. Screws 3 and 2 at max torque. Screws 1 and 4 at 70%. Even without a copper plate and a x-bracket with the RTX 4070, I managed to get the 40c to 99c on the CPU. I need to cut some aluminium on the heatsink where the R22 inductor is touching. Because this component is taller than the GPU's die and can mess both CPU and GPU temps (because die doesn't touch)
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I still get the same issue with the copper plate installed. I installed it correctly before it wasn't installed correctly. I had to cut the plate so it can fit flat. VRAM pads are ok now. Still peaks at 99c when being at 35W I touch the CPU side, it's not even hot, the vents have cold air. The GPU temps don't even go at 99c. Max is like 80c but when at 115W 100%. The GPU temps are like 27-30c idle. No weird spikes on the GPU side. When I insert an USB key, CPU spikes at 99c... I'll try 0.8mm thick and 1mm thick copper plates in 2 weeks. 1.2mm is probably too much. Because I have the NV-A heatsink and it doesn't even touch the "tall" R22 inductor, like there's a 0.2-0.3mm gap "visually". On the NV-B heatsink (old 7720), 0mm gap. Need to cut impossible corner. I want to try undervolting at -100mV but it's locked of course and I have the latest bios. FurMark 1.37: RTX 4070 MXM, 116W max, 79C max, 205 fps AVG 1080p
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I removed the copper plate and used the previous Dell Precision 7720 where the Quadro P3000 and 4070 with the custom heatsink had weird CPU temp spikes issues. I removed the copper and added the M1200 because the P3000 was somewhere else. And now the CPU doesn't act up! It's not doing 40c to 99c. Or doing 99c at 35W! I'll test further more. Edit: no problems with unmodified heatsink (removed copper plate) on both Dell Precisions with P3000 and M1200.
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I don't know, the CPU doesn't seem hot. I feel the wind on my hand, it's cold. If it doesn't do good contact, how is it possible for the CPU to cool down? Visually with the other heatsink with the copper plate, I see that they're aligned good, like on line between the CPU and GPU parts. Like there's some sort of an elevation gap Let me remove the copper plate on the other heatsink and test it with P3000
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Yes it does show contact. My modification is just to add one piece of 4cmx4cmx1.2mm copper plate on the GPU's section. I did the same modification on the newer heatsink, same issue I think? There's good amount of pressure on the CPU, I can't do that far. This happens on two different 7720 laptops. 6920HQ and 7820HQ
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Hello. I bought 2 Dell precision 7720. One was with a Quadro P3000, working fine, until I put the RTX 4070 MXM. I modded the heatsink (1.2mm copper plate) so it has a good contact with the RTX MXM. The CPU temperature reading are WTF. When the CPU or GPU is doing something, the CPU is pegged at 99-100C. With PTM 7950 and cleaned vents... When I insert back the Quadro P3000 with the modded heatsink, same issue. So I bought another 7720 with M1200. Quadro M1200 and CPU works fine. After, testing the new 7720, I reuse the modified heatsink with the RTX 4070 and I get the same problem, CPU temperature readings from 40c to 99c in an instant... Does random spikes at 70-80c in idle too... Windows 10 and 11 fresh copy. When I remove the MXM GPU, the CPU no longer reaches 99c. It's normal. Is this a heatsink problem or is this an RTX 4070 MXM problem? The RTX 4070 stays cool at idle and no random spikes. Did anyone get this issue before? RESOLVED! Read the thread to know more! Upgrade successful!
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But the price is so cheap too... If I was able to manufacture one of these, it'll cost me max 180€.
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Thanks. Can't they sell it on Alibaba/Aliexpress? Taobao is so limited and you're right. The OEM heatsink is cool too. But I don't have the right software to cool with the fan. The GPU fans never boost.
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@Drimacushello, where did you get that heatsink? I had to modify my own laptop casing just to cool the RTX 4080
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News, so the i9 9900KF with the bios I uploaded works fine on dual channel. So yes, it was indeed a pressure issue from the lga bracket.
