win32asmguy
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Everything posted by win32asmguy
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The single core score is better, just because of higher clock speeds (if you have a paste job good enough to allow over 5ghz on a single core without thermal throttling) With multicore it has the same thermal system and power limits so its essentially robbing performance from the p-cores for additional e-cores. At least it also has better memory options. In the case of the 7780 it also has the unfortunate combined load PL1 throttling down as low as 40W. This is better than the 7670 which goes down as low as 30W in the same scenario. It should really be 55W minimum in the highest performance mode while plugged in.
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Maybe also try these drivers for the 7680/7780 which worked fine on older Precisions (7560 w/3080, 7670 w/3080ti). https://www.dell.com/support/home/en-us/drivers/driversdetails?driverid=w0dp7&oscode=wt64a&productcode=precision-17-7780-laptop
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The heatsink/fan assembly part number is 204PH. The CPU draws about 130W with thermal throttling (157W PL2) until it reaches PL1 which is limited to 85W at 90C average core temperatures. I do not think this has a vapor chamber either despite some marketing material I saw from Dell and Chinese sites. 15% coupon from signing up to the Dell newsletter. It is also eligible for Rakuten cashback and will get 2% Dell Rewards as well, which can be used to buy a spare power brick or similar.
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Got some initial benchmarks of the Precision 7780. This is with 64GB Kingston Fury at DDR5-5200 CL38. ADA 4000 laptop GPU shows as 145W in Nvidia Control Panel and was 135W observed under load in Optimus mode. This config was about 3600usd before tax (only including 8GB SODIMM and 256GB storage). A similar config with the 4090 mobile instead was quoted at 4400usd which did not seem to be as good a value. The cooling system indeed no longer has the "grinding" startup/shutdown noise and is quieter than the 7670 with 3080ti mobile while also being 50% faster.
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Did your machine with the flicker have the BOE or CSOT panel? Curious if its a vendor-specific issue. AFAIK they can use either vendor for both the 4080 and 4090 model depending on what they have on hand.
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Wow yours looks quite a bit better than mine did after disassembly. On mine most of the LM was no longer emulsified in the paste and had made it past both the CPU and GPU barriers. Did you use acetone to clean everything up before applying Conductonaut? Do you intend to test any other options like PTM7950?
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Yeah those Precisions are probably only a choice if you NEED the faster warranty service or expansion to 128GB of ram or four full-sized M.2 drives, or want good gauranteed compatibility with Linux/Win10 which they do support. The sales agents and spec sheets are also not listing CPU / GPU power limits so nobody really knows where they land performance wise until someone tests it out. I noticed Alienware allows the m18 to be configured with the FHD+ display and 4090 now for 3299, but it seems like there are not any coupons around right now.
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Hah, I was quoted the other day for a Precision 7780 with a 13950HX, FHD 60hz and 4090 mobile (probably 130-150W TGP) for $4399 before tax.
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That is really good to know. After using the 7670 quite a bit under combined loads it is definitely not as good as the 7770 was. It can really only sustain about 85W GPU and 45W CPU, and needs MMIO PL1/2 locked via TS for it to not drop the CPU down to 30W. Oh, and another interesting note about the 7780, it looks like it now has modular wifi again which is nice.
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@Aaron44126 Did the new heatsink reduce or eliminate the noise the fans made when cycling on? Just curious as the 7670 sunon variant definitely does not have that issue but I did experience it with both variants on the 7770.
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Not sure what happened. I used DJUnreal's X17 R2 teardown video as a guide for care in heatsink removal with Element 31. Basically tried to be gentle while separating the heatsink from the mobo so as to not bend anything or cause any LM to spill. After I pulled it apart I could tell that most of the LM was no longer emulsified in the paste and much of it was up under both the CPU and GPU barriers, some of which had made its way on to the BGA contacts for CPU, GPU and GPU memory. If you want to get it replaced I would suggest trying to get a tech sent out to do the job. That way if the LM spilled they can simply report it and get a motherboard part dispatched without having to point to customer modification damage.
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I agree that most users should be disassemble beyond upgrading memory or storage. Its a shame because replacing some parts that are semi-consumable like keyboards, fans and DC-in jacks are a lot more complex job than it was on most models ten years ago. Factory liquid metal sounds like a bad idea in general to me. Even if service techs are handling the repair while in warranty it only lasts a maximum of four years and by default these systems only include one year of coverage. It does not help performance unless it can be properly applied so why even bother knowing the track record of quality control at the factory?
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The disassembly isn't particularly hard. Some of the cables had adhesive so they would stick to other things while trying to remove the mobo. I spent far more time trying to clean up the existing Element 31 TIM that had leaked past the barrier. Sadly the mobo is still dead so it was not exactly a great experience.
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This one was from Windows 11 mostly out of box after trying to get AWCC in a configuration where the CPU was performing poorly. https://www.3dmark.com/spy/36952549 The interesting part is that if you have no AWCC installed, it can actually be put in a state where the custom OC level from the bios is used which seemed to work more reliably than AWCC switching game profiles and applying overclocking along with overvolting.
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Well, I disassembled my M18 this afternoon to replace the TIM and it looks like liquid metal (element 31?) was in places it should not be. So now I have to figure out how to safely clean it up before applying PTM7950.
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https://www.dell.com/en-us/shop/dell-74-mm-barrel-330-w-ac-adapter-with-2-meter-power-cord-united-states/apd/450-bbqg/pc-accessories This power brick showed up on Dell's site recently. It is the SFF 330W according to a sales rep, so I ordered one. Technically I already have the SlimQ 330W but it has been making a popping noise so I have stopped using it (and I do not have the 330W Dell tip for it either). I also swapped over to my Windows 10 22H2 + Fedora 37 drive which is working well. Audio seems to have full volume and no missing drivers in Device Manager. AWCC download page mentions only Windows 11 support and I have not tried installing it.
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I would say "slightly rubberized" is a good assessment. It is not as rubberized as the Precision but not smooth like the metal bottom panel either.
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Is there a benefit from choosing 64GB (dual rank) over 32GB (single rank)? I am also looking at ram options for the m18.
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I have been testing the Alienware m18 and it seems like it is designed to allow the CPU up to 185W, but the stock paste job cannot sustain more than 130W. Obviously the killer feature there is just the 18 inch FHD+ display but it is pretty good for performance while being over $1000 cheaper than a similar spec Razer Blade 18.
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Today my M18 with 13900HX, 4080 and 480hz FHD+ display arrived. Here is an initial run of Timespy after updating AWCC and drivers. https://www.3dmark.com/3dm/91421717? The FHD+ panel is really nice. Great color gamut and brightness and clarity. The membrane keyboard is great. Not quite as nice as the Precision 7670 or Alienware 51m R2, but acceptable and quiet. It appears that the only way to disable the bootup rainbow effect is by disabling keyboard backlighting via the F7 key. Sadly the fans do have a high pitch whine to them across the entire curve. I need to pull the system apart and look to see if there may be multiple brands (Sunon / CCI) to see if I need to try and fish for another part. That is really the only disappointing thing so far.
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*Official Benchmark Thread* - Post it here or it didn't happen :D
win32asmguy replied to Mr. Fox's topic in Desktop Hardware
Oh jeez. I did not realize you needed a rockitcool kit. I have a brand new one I could have included with the NH55! -
amd Ryzen 9 7945HX beats i9 13980HX in multi-core while using less power
win32asmguy replied to saturnotaku's topic in Tech News
Yeah it was working pretty well before it started freezing up. It is pretty usable as a DTR hooked up to one or two external displays and a keyboard + mouse. But on the go the combination of the high DPI lcd at 100% scaling, non-standard keyboard layout with noisy mechanical keys and oversized trackpad make it hard for me to use. I think they plan to release a model with 7945hx later this year. It could be a great performer especially if they pair it with a 4090 and the hardware can still unofficially support Windows 10. Supposedly they are also going to offer the membrane keyboard (same as XMG) on the 17 inch model at some point as well. -
It sounds like it is possible via a stored overclocking profile. I tried ordering an open box m16 from Best Buy but it was DOA so I was not able to test it out.
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amd Ryzen 9 7945HX beats i9 13980HX in multi-core while using less power
win32asmguy replied to saturnotaku's topic in Tech News
Has anybody tried loading Windows 10 on a 7945hx system yet? Curious how it would run if drivers are compatible. Do these chips have support for four ranks per channel, so they can be taken up to 128gb/192gb? I also wonder if Alienware is going to have m18 configurations with 7945hx and 4080/4090 as 7600m would be a poor max spec given what the CPU can do. Sadly my Mech 17 GP2 is freezing after bootup (even in the bios) so it needs to be sent back. -
Oh well I do not use Arch but I found this in the user repos so maybe it can work? https://aur.archlinux.org/packages/tuxedo-control-center-bin
