PHVM_BR Posted October 23 Share Posted October 23 1 hour ago, Chalybion said: 6-core CPU max power is 60-75W, and for the 15" precision, max GPU power is 80W. So a 180W adapter is plenty. 240W adapter is only needed for 17" models (w/ 110W GPU), or if overclocking an HK-variant CPU. The Xeons are supposed to be a binned version of the equivalent i7, with additional support for ECC RAM and vPro. So the Xeon theoretically has better silicon quality - so theoretically less voltage is converted to heat at the same clock speeds. You may not see an appreciable temperature difference. FWIW, I've undervolted two Xeons in these laptops; one was 100% stable at -115 mV (both core and cache), the other stable at -120 mV. I'm not sure how that compares to the i7s. I had an i7-9750H for four years, and it was completely stable at -125mV/-215mV for cache/core. With Speedshift = 0 (Windows power plan set to High Performance) I could maintain it at -135mV/-225mV. i7, i9, Xeon... I think it all depends on the silicon lottery. I agree that a 180W charger is sufficient for i7 (6-core) versions. Link to comment Share on other sites More sharing options...
Nrml Man Posted October 24 Share Posted October 24 Thank you guys for answers.I think i need not to bother about other cpu,my 8750 is fully enough for today.Only i'll change gpu.Do you know a difference between delta and sunon fans,what are better? Link to comment Share on other sites More sharing options...
Chalybion Posted October 25 Share Posted October 25 Delta fans create less high frequency noise at high speeds. Not a necessary upgrade, but a nice-to-have if you are already taking off your heatsink. They are distinguished by a white plug (instead of black), and no sticker on the fan hub. Precision 7520 / Xeon E3-1535m v6 / 32 gb DDR4 2666 MHz CL15 / GTX 1650 Mobile / LP156QHG-SP(V1) Precision 7540 / i9-9980HK / 32 gb DDR4 2666 MHz CL15 / RTX 4000 / LP156QHG-SP(V1) / Delta Fans Link to comment Share on other sites More sharing options...
Nrml Man Posted October 30 Share Posted October 30 I received a heatsink for p3200/rtx3000 from Aliexpress.But it came a little curved,and connection holes on gpu not matched by installing.So bad but its not the end of the world,i leave this idea,but at least i changed my Gelid HeatPhase for a fresh Ptm7950 on cpu.I see a little difference in temperatures already,Ptm is noticeably better.Thank you guys for answers and advices,have a nice day! Link to comment Share on other sites More sharing options...
Lidia Posted November 2 Share Posted November 2 On 9/13/2024 at 11:44 AM, PHVM_BR said: The Precision 7540 here is like an old man in top shape: RTX 4000 Max-Q 90W (Precision 7550 VBIOS): https://www.3dmark.com/spy/52615614 Quadro T2000 (60W GDDR5): https://www.3dmark.com/spy/52510073 Hey @PHVM_BR — thanks for sharing your RTX 4000 upgrade! You mentioned switching to a Precision 7550 VBIOS (~90W). Could you please share the exact VBIOS version string (as shown in GPU-Z)? I want to update my current BIOS. Thanks a lot! or the rom please Link to comment Share on other sites More sharing options...
PHVM_BR Posted November 4 Share Posted November 4 On 11/2/2025 at 11:27 AM, Lidia said: Hey @PHVM_BR — thanks for sharing your RTX 4000 upgrade! You mentioned switching to a Precision 7550 VBIOS (~90W). Could you please share the exact VBIOS version string (as shown in GPU-Z)? I want to update my current BIOS. Thanks a lot! or the rom please My Precision is stored away; I've been using a newer laptop. Maybe this weekend... Link to comment Share on other sites More sharing options...
Lidia Posted November 5 Share Posted November 5 7 hours ago, PHVM_BR said: My Precision is stored away; I've been using a newer laptop. Maybe this weekend... It's okay, I found the 90W VBIOS file. I'll go ahead and share it here. I'm happy to help others who are looking to upgrade their RTX 4000. 229202.rom 1 Link to comment Share on other sites More sharing options...
PHVM_BR Posted November 5 Share Posted November 5 10 hours ago, Lidia said: It's okay, I found the 90W VBIOS file. I'll go ahead and share it here. I'm happy to help others who are looking to upgrade their RTX 4000. 229202.rom 1022.5 kB · 1 download Simply download the VBIOS update firmware available in the driver list on the P7550 support page, extract its contents with 7zip, and click on the corresponding option (RTX 5000 or RTX 4000). The installation is automatic. https://www.dell.com/support/home/en-us/drivers/driversdetails?driverid=m1hhx&oscode=wt64a&productcode=precision-15-7550-laptop Link to comment Share on other sites More sharing options...
JomesBand Posted Tuesday at 12:00 PM Share Posted Tuesday at 12:00 PM Hello, I know this is a long shot since the 7740 is „ancient“ at this point. I had/have the Quadro RTX 3000 installed and wanted to upgrade to the 5000. So I researched the parts number and found out that I also need the 40 Pin display cable. So I bought both and was happy to upgrade, only to finde out once I got to the back of the panel, that the port on the panel isn’t the right one for the 40 Pin connector… kinda obvious in hindsight but I feel pretty stupid rn, with the disassembled Laptop in front of me after the point of no return… me question now is: do I need ANYTHING else for the upgrade like a bigger heatsink? And a different power cable? I even asked the seller of the gpu if I needed anything else besides the display cable and he just said no… please help me🥲 Link to comment Share on other sites More sharing options...
Aaron44126 Posted Tuesday at 12:38 PM Share Posted Tuesday at 12:38 PM Err, I don’t know why you’d need a display cable replacement to upgrade the GPU. I’ve never heard that for this model. (You might need one to upgrade from a 1080p display to 4K, but that’s it.) If the screw holes are in the same place between your 3000 and 5000 GPU then your heatsink should be fine. I am not sure, but I think you just need a heatsink replacement to perform this upgrade on the Precision 7540, not the 7740. Apple MacBook Pro 16-inch, 2023 (personal) • Dell Precision 7560 (work) • Full specs in spoiler block below Info posts (Windows) — Turbo boost toggle • The problem with Windows 11 • About Windows 10/11 LTSC Spoiler Apple MacBook Pro 16-inch, 2023 (personal) M2 Max 4 efficiency cores 8 performance cores 38-core Apple GPU 96GB LPDDR5-6400 8TB SSD macOS 15 "Sequoia" 16.2" 3456×2234 120 Hz mini-LED ProMotion display Wi-Fi 6E + Bluetooth 5.3 99.6Wh battery 1080p webcam Fingerprint reader Also — iPhone 12 Pro 512GB, Apple Watch Series 8 Dell Precision 7560 (work) Intel Xeon W-11955M ("Tiger Lake") 8×2.6 GHz base, 5.0 GHz turbo, hyperthreading ("Willow Cove") 64GB DDR4-3200 ECC NVIDIA RTX A2000 4GB Storage: 512GB system drive (Micron 2300) 4TB additional storage (Sabrent Rocket Q4) Windows 11 Enterprise LTSC 2024 15.6" 3940×2160 IPS display Intel Wi-Fi AX210 (Wi-Fi 6E + Bluetooth 5.3) 95Wh battery 720p IR webcam Fingerprint reader Previous Dell Precision 7770, 7530, 7510, M4800, M6700 Dell Latitude E6520 Dell Inspiron 1720, 5150 Dell Latitude CPi Link to comment Share on other sites More sharing options...
Chalybion Posted Tuesday at 01:29 PM Share Posted Tuesday at 01:29 PM The display cable is paired with the screen, not the GPU. All display cables connect to the same eDP port on the motherboard. There is also a black power cable that connects from the motherboard to the GPU. At least on the Precision 7540, the RTX 4000/5000 cable is longer than the RTX 3000 cable, but I was able to make the old cable work by gently straightening the bends. Other than possibly the power cable, a new heatsink is the only requirement to make the RTX 5000 work. Precision 7520 / Xeon E3-1535m v6 / 32 gb DDR4 2666 MHz CL15 / GTX 1650 Mobile / LP156QHG-SP(V1) Precision 7540 / i9-9980HK / 32 gb DDR4 2666 MHz CL15 / RTX 4000 / LP156QHG-SP(V1) / Delta Fans Link to comment Share on other sites More sharing options...
JomesBand Posted Tuesday at 01:31 PM Share Posted Tuesday at 01:31 PM 48 minutes ago, Aaron44126 said: Err, I don’t know why you’d need a display cable replacement to upgrade the GPU. I’ve never heard that for this model. (You might need one to upgrade from a 1080p display to 4K, but that’s it.) If the screw holes are in the same place between your 3000 and 5000 GPU then your heatsink should be fine. I am not sure, but I think you just need a heatsink replacement to perform this upgrade on the Precision 7540, not the 7740. Oh wow! That was quick! Thank you for the reply. The Heatsinkholes do align, so I hopefully should be good there. I also wouldn’t what kind of different heatsink they would put in there, since thats pretty much all the room there is😅 regarding the display cable, I do see your point now… since the Display isn’t even directly connected to the GPU… I don’t know why someone would recommend that… can you tell me tho if I actually need to replace 3 connectors (picture below) or if they are universal? Link to comment Share on other sites More sharing options...
JomesBand Posted Tuesday at 01:35 PM Share Posted Tuesday at 01:35 PM 3 minutes ago, Chalybion said: The display cable is paired with the screen, not the GPU. All display cables connect to the same eDP port on the motherboard. There is also a black power cable that connects from the motherboard to the GPU. At least on the Precision 7540, the RTX 4000/5000 cable is longer than the RTX 3000 cable, but I was able to make the old cable work by gently straightening the bends. Other than possibly the power cable, a new heatsink is the only requirement to make the RTX 5000 work. The powercable actually fits lengthwise, and the heatsink fits as well… do have a partnumber for the heatsink you‘re talking about? Link to comment Share on other sites More sharing options...
Chalybion Posted Tuesday at 02:01 PM Share Posted Tuesday at 02:01 PM Those three connectors are the DGFF connectors; they are universal (They carry the PCI Express connection, and I think one is dedicated to power) Here is the heatsink part number for my 7740 with RTX 5000: Here are all of the other part numbers associated with the graphics card: Precision 7520 / Xeon E3-1535m v6 / 32 gb DDR4 2666 MHz CL15 / GTX 1650 Mobile / LP156QHG-SP(V1) Precision 7540 / i9-9980HK / 32 gb DDR4 2666 MHz CL15 / RTX 4000 / LP156QHG-SP(V1) / Delta Fans Link to comment Share on other sites More sharing options...
Aaron44126 Posted Tuesday at 02:14 PM Share Posted Tuesday at 02:14 PM Important to note that the Precision 7540 and 7740 upgrades are different here. Dell added the 4000 and 5000 GPUs late for the Precision 7540, and those cards have a slightly different physical layout than the 3000-and-lower cards on that system, which is why the heatsink and power cable replacement are needed. On the 7740, all of those cards launched at the same time, and all of them have a similar physical layout, so really the only thing that you should need to replace is the card itself. Apple MacBook Pro 16-inch, 2023 (personal) • Dell Precision 7560 (work) • Full specs in spoiler block below Info posts (Windows) — Turbo boost toggle • The problem with Windows 11 • About Windows 10/11 LTSC Spoiler Apple MacBook Pro 16-inch, 2023 (personal) M2 Max 4 efficiency cores 8 performance cores 38-core Apple GPU 96GB LPDDR5-6400 8TB SSD macOS 15 "Sequoia" 16.2" 3456×2234 120 Hz mini-LED ProMotion display Wi-Fi 6E + Bluetooth 5.3 99.6Wh battery 1080p webcam Fingerprint reader Also — iPhone 12 Pro 512GB, Apple Watch Series 8 Dell Precision 7560 (work) Intel Xeon W-11955M ("Tiger Lake") 8×2.6 GHz base, 5.0 GHz turbo, hyperthreading ("Willow Cove") 64GB DDR4-3200 ECC NVIDIA RTX A2000 4GB Storage: 512GB system drive (Micron 2300) 4TB additional storage (Sabrent Rocket Q4) Windows 11 Enterprise LTSC 2024 15.6" 3940×2160 IPS display Intel Wi-Fi AX210 (Wi-Fi 6E + Bluetooth 5.3) 95Wh battery 720p IR webcam Fingerprint reader Previous Dell Precision 7770, 7530, 7510, M4800, M6700 Dell Latitude E6520 Dell Inspiron 1720, 5150 Dell Latitude CPi Link to comment Share on other sites More sharing options...
JomesBand Posted Tuesday at 02:59 PM Share Posted Tuesday at 02:59 PM 54 minutes ago, Chalybion said: Those three connectors are the DGFF connectors; they are universal (They carry the PCI Express connection, and I think one is dedicated to power) Here is the heatsink part number for my 7740 with RTX 5000: Here are all of the other part numbers associated with the graphics card: That is actually super helpful and reassuring… I just don’t see the difference for the heatsink… mine has the p/n 05VCW8 and they seem to look identical… I think I‘m gonna just renew the thermal pads as well as the paste on the CPU and see how the temps behave? I also have to read up on how to unlock the power draw, since the 3000 tops out at 75W even tho its rated for 90 I think… Link to comment Share on other sites More sharing options...
JomesBand Posted Tuesday at 03:03 PM Share Posted Tuesday at 03:03 PM 45 minutes ago, Aaron44126 said: Important to note that the Precision 7540 and 7740 upgrades are different here. Dell added the 4000 and 5000 GPUs late for the Precision 7540, and those cards have a slightly different physical layout than the 3000-and-lower cards on that system, which is why the heatsink and power cable replacement are needed. On the 7740, all of those cards launched at the same time, and all of them have a similar physical layout, so really the only thing that you should need to replace is the card itself. Yea, I calmed down a bit now… I was really pissed and stressed having to spend another 500 bucks on a new display… for now I‘ll just run it without display since I already ripped out the 30 pin display connector and don’t wanna waste the 40 pin one as well😂 Link to comment Share on other sites More sharing options...
Chalybion Posted Tuesday at 03:44 PM Share Posted Tuesday at 03:44 PM That's super frustrating. Unless you want/need 4K resolution, it's best to get a new 30 pin display connector (and if there is any issue with the screen, a new 1080P screen). - cable + screen should be ~$140 Otherwise, the 40 pin cable is only compatible with a 4K screen, and also requires an IR webcam, different screen bezel for the IR webcam, and possibly a different lid (unless you already have the aluminum lid). Those changes are $$$ individually, and I don't see any complete display assemblies for sale on eBay right now. The other option would be to buy a cheap complete low-spec or for-parts laptop and take the parts you need Precision 7520 / Xeon E3-1535m v6 / 32 gb DDR4 2666 MHz CL15 / GTX 1650 Mobile / LP156QHG-SP(V1) Precision 7540 / i9-9980HK / 32 gb DDR4 2666 MHz CL15 / RTX 4000 / LP156QHG-SP(V1) / Delta Fans Link to comment Share on other sites More sharing options...
Chalybion Posted Tuesday at 03:54 PM Share Posted Tuesday at 03:54 PM 47 minutes ago, JomesBand said: That is actually super helpful and reassuring… I just don’t see the difference for the heatsink… mine has the p/n 05VCW8 and they seem to look identical… I think I‘m gonna just renew the thermal pads as well as the paste on the CPU and see how the temps behave? I also have to read up on how to unlock the power draw, since the 3000 tops out at 75W even tho its rated for 90 I think… Yeah, as long as the screw holes on the 05VCW8 line up with the holes on your RTX 5000, you will be all good with new paste. As long as the stock thermal pads aren't damaged, you won't notice a significant difference by changing them out. On the 7740, the RTX 5000 already runs at 110 W, which is the maximum available from a Dell VBIOS. Other manufacturers offered up to 150 W on the mobile version of the RTX 5000, and the Precision 7740 thermals could support that easily, but we're stuck with 110W. Precision 7520 / Xeon E3-1535m v6 / 32 gb DDR4 2666 MHz CL15 / GTX 1650 Mobile / LP156QHG-SP(V1) Precision 7540 / i9-9980HK / 32 gb DDR4 2666 MHz CL15 / RTX 4000 / LP156QHG-SP(V1) / Delta Fans Link to comment Share on other sites More sharing options...
JomesBand Posted Tuesday at 04:01 PM Share Posted Tuesday at 04:01 PM 11 minutes ago, Chalybion said: That's super frustrating. Unless you want/need 4K resolution, it's best to get a new 30 pin display connector (and if there is any issue with the screen, a new 1080P screen). - cable + screen should be ~$140 Otherwise, the 40 pin cable is only compatible with a 4K screen, and also requires an IR webcam, different screen bezel for the IR webcam, and possibly a different lid (unless you already have the aluminum lid). Those changes are $$$ individually, and I don't see any complete display assemblies for sale on eBay right now. The other option would be to buy a cheap complete low-spec or for-parts laptop and take the parts you need It is… I‘m just glad that I‘m not stuck with a bricked laptop until I‘ve got everything together! I would’ve thought that the lids is the color/material… so I basically need a completely new upper half…🥲 Link to comment Share on other sites More sharing options...
JomesBand Posted Tuesday at 04:06 PM Share Posted Tuesday at 04:06 PM 6 minutes ago, Chalybion said: Yeah, as long as the screw holes on the 05VCW8 line up with the holes on your RTX 5000, you will be all good with new paste. As long as the stock thermal pads aren't damaged, you won't notice a significant difference by changing them out. On the 7740, the RTX 5000 already runs at 110 W, which is the maximum available from a Dell VBIOS. Other manufacturers offered up to 150 W on the mobile version of the RTX 5000, and the Precision 7740 thermals could support that easily, but we're stuck with 110W. That is good news! The pads aren‘t necessarily damaged but they don’t cover all of the modules so I figured I’d just replace them all. Is the corresponding vbios for the 5000 to be found somewhere in this thread? Link to comment Share on other sites More sharing options...
Chalybion Posted Tuesday at 04:29 PM Share Posted Tuesday at 04:29 PM 8 minutes ago, JomesBand said: It is… I‘m just glad that I‘m not stuck with a bricked laptop until I‘ve got everything together! I would’ve thought that the lids is the color/material… so I basically need a completely new upper half…🥲 Yes, if you want a UHD screen / 40 pin connector, the compatible webcamera is the IR one, which doesn't fit in the space between the WWAN antenna on the carbon fiber lid. If you don't want a webcam, I think the screen mounting points are the same on both lids. The VBIOS on the card you bought is the best you'll get. No need to download another UHD / 40 pin parts Aluminum back cover: https://www.parts-people.com/index.php?action=item&id=31777 IR Webcam: https://www.parts-people.com/index.php?action=item&id=30446 Bezel: (see eBay) UHD Screen: Dell Part # CK7T7. Below is a list of compatible UHD screen models: Precision 7520 / Xeon E3-1535m v6 / 32 gb DDR4 2666 MHz CL15 / GTX 1650 Mobile / LP156QHG-SP(V1) Precision 7540 / i9-9980HK / 32 gb DDR4 2666 MHz CL15 / RTX 4000 / LP156QHG-SP(V1) / Delta Fans Link to comment Share on other sites More sharing options...
JomesBand Posted Tuesday at 04:57 PM Share Posted Tuesday at 04:57 PM 26 minutes ago, Chalybion said: Yes, if you want a UHD screen / 40 pin connector, the compatible webcamera is the IR one, which doesn't fit in the space between the WWAN antenna on the carbon fiber lid. If you don't want a webcam, I think the screen mounting points are the same on both lids. The VBIOS on the card you bought is the best you'll get. No need to download another UHD / 40 pin parts Aluminum back cover: https://www.parts-people.com/index.php?action=item&id=31777 IR Webcam: https://www.parts-people.com/index.php?action=item&id=30446 Bezel: (see eBay) UHD Screen: Dell Part # CK7T7. Below is a list of compatible UHD screen models: What website is that?🤔 Yea, that makes sense, the IR-Webcam seems considerably larger than the other one… but all that can wait😅 I‘m just glad I‘ll have it up and running tomorrow, once the pads arrive! thank you all for the help so far! Link to comment Share on other sites More sharing options...
Chalybion Posted Wednesday at 12:56 PM Share Posted Wednesday at 12:56 PM 19 hours ago, JomesBand said: What website is that?🤔 Yea, that makes sense, the IR-Webcam seems considerably larger than the other one… but all that can wait😅 I‘m just glad I‘ll have it up and running tomorrow, once the pads arrive! thank you all for the help so far! www.panelook.com Screen options are limited for the Precision 7740 screen mounting style (Face U/D Lock on Slug). There are 1920x1080 144 Hz screens that also use a 40 pin connection; most of the other resolution/frequency options are TN instead of IPS Precision 7520 / Xeon E3-1535m v6 / 32 gb DDR4 2666 MHz CL15 / GTX 1650 Mobile / LP156QHG-SP(V1) Precision 7540 / i9-9980HK / 32 gb DDR4 2666 MHz CL15 / RTX 4000 / LP156QHG-SP(V1) / Delta Fans Link to comment Share on other sites More sharing options...
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