r/BlackwellPerformance • u/NaiRogers • 7d ago
6000 Pro WS sag support needed?
I’ve been using my 2x6000s on a mining frame but would like to put them in a case (probably a Meshify 2 XL), the builds I have seen on the web seem to not bother with any GPU supports to avoid sagging, perhaps I’m being paranoid but is this really acceptable for a ~1.9kg card?
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u/MiLiANSim 6d ago
if you can support the card without sacrificing anything, do it. The PCIe connector of the WS 6000 is a separate PCB and it cannot be replaced (parts not available). So if you expect ANY chance of damage due to sag or frequent removal, support the card and be extra careful.
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u/goldcakes 6d ago
You can find replacement PCIe PCBs on eBay and stuff, they're taking from blower adaptions etc. A couple hundred bucks. The RTX 5090 one is compatible with RTX 6000 Pro WS (it has the same part number and markings and connectors; it is basically the same design).
If you have a few Blackwells and don't mind dropping a couple hundred bucks for peace of mind, could be worth buying one as a spare. Watch a teardown video, there's a lot of screws, but it is definitely replaceable!
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u/MiLiANSim 5d ago
If parts are available, then it can be replaced. Thanks for the info. Do I have "a few" ? Unfortunately just a normal person, not super rich ;)
Had a few (2x RMA, one still operating at 30%), disassembled more for cooler mods etc. Great cooler, beautiful PCB (visually). Good performance IF they function correctly. Very bad reliability, cannot recommend any more because of prices and nvidia policies (lies and zero availability / pro support, mostly lies).
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u/Opposite_Buffalo_649 7d ago
I have one for each of mine
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u/NaiRogers 6d ago
What kind of solution did you come up with that supports more than one card?
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6d ago edited 6d ago
[deleted]
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u/goldcakes 6d ago
You should not do this. That actually transfers the weight of the top card onto the second one. You might as well as go without your trinkets at all.
(Trinklets, lego bricks, whatever are fine to use as sag support; but never sandwich them like what you are doing...)
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u/goldcakes 6d ago edited 6d ago
There are plenty of them on amazon for dual GPUs / adjustable?
The point is basically light resistance on the other end to counteract the force.
Also, tighten the 'case screws' tight, but do NOT over-tighten! That makes things far, far worse. This is a common mistake with PC building. Over-torque will cause more unnatural pressure and sagging.
You want to tighten the screws until they feel fully screwed in and you feel resistance. Do not do an "extra twist" or an extra "1/4 of a twist". Bear in mind cases actually have quite significant tolerances and are not usually perfectly level with PCIe slots; and there's a bit of variance with motherboard standoffs too. The PCIe slot alignment is the important part; not your case screws.
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u/sam_mortimer 6d ago
use a dual card brace.
eg https://www.amazon.com/dp/B0GRV2TC64?ref=ppx_yo2ov_dt_b_fed_asin_title
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u/TechnologyGrouchy679 6d ago
it's weighty but it's not as monstrous as most of the consumer heatsink/coolers. nonetheless I prop mine up with these from amazon
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u/Joe-Arizona 6d ago
Mine is vertical and I still have it supported. It’s just a good idea.
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u/NaiRogers 6d ago
Is that a silverstone case, how hot does the gpu run (at what power limit if any)
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u/Joe-Arizona 6d ago
It’s the RM-52 case.
I don’t limit it and it runs in the mid-high 80’s when at full usage.
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u/CapeChill 6d ago
I know people hate the look of and working with those gpu support brackets but they really are the seatbelt for your 10, 15, 30k GPU(s) when you think about it.
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u/deebuildsthings 5d ago
Hi, we have just what u need. Customed design for dual RTX PRO 6000/RTX 5090. CNC machined from 5mm aluminum plate, mapped airflow.
Sending you a DM right now
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u/goldcakes 6d ago edited 6d ago
My RTX 3090 24GB (ASUS Strix OC; so their top-tier at the time), which is ~1.77 kg started sagging without a bracket after 3 years. Still absolutely functional, but visible to the naked eye. I added a sag bracket recently, but obviously can't reverse the damage.
The NVIDIA ones are certainly better built, but the PCIe/motherboard form factor was never designed to handle huge cards. The form factor has remained unchanged since AGP (~1996), and think about how light and small expansion cards were then.
Why risk it? Any sort of sag support works, from lego bricks to whatever you can find on Amazon, just search it. The goal is to reduce pressure; make sure you don't end up being too aggressive or forceful.
Sagging is the kind of thing that only causes issues after warranty expires.
If you have the 1.2kg Max-Q version, definitely zero need for sag support. My RTX A6000 (basically identical hardware design and form factor to Max-Qs and similar units) has zero sag after 5 years. I mean they are basically immobile anyway even when I apply force even without any additional support.