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Graphics Technology

Cryptominers Have Already Cracked Nvidia's RTX 3060 Hash Rate Limiter (techradar.com) 81

An anonymous reader quotes a report from TechRadar: When the GeForce RTX 3060 was launched on February 25, Nvidia announced that the mining efficiency of the graphics card was deliberately being reduced by around 50% in a bid to get more of the GPUs directly to gamers. However, this limitation appears to have been quickly bypassed by Chinese cryptocurrency miners using customized mods. There was already concern brewing about how well the limiter would stand against savvy miners, but Nvidia has been vocally confident in the hash rate limit. A statement was given to PC Gamer regarding how difficult it would be to get around the protections placed on the GPUs, claiming "End users cannot remove the hash limiter from the driver. There is a secure handshake between the driver, the RTX 3060 silicon, and the BIOS (firmware) that prevents removal of the hash rate limiter."

The NVIDIA GeForce RTX 3060 can deliver around 40-45 MH/s for standard performance but this dropped down to 20-25 MH/s if the GPU detected mining-related activity, providing the limiter is in place. A picture spotted by I_Leak_VN reveals a Chinese mod developed to help miners unlock the full hash potential of the GeForce RTX 3060 graphics card, with the image showing the Geforce RTX 3060 delivering 45 MH/s in Ethereum. The hash-rate limiter mod has also been separately confirmed to work by a Vietnamese Facebook group, apparently even capable of outputting 50 MH/s. So far, according to Wccftech, it appears that the cryptomining algorithm in question is for Octopus, which is different than cryptocurrency than Ethereum, which the hashrate limiter was designed to thwart. That means its possible that an updated driver could introduce a limiter for that cryptocurrency as well, but as we explored earlier this month, Nvidia's efforts to thwart cryptomining is likely fraught with legal issues that might prevent such an update.

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Cryptominers Have Already Cracked Nvidia's RTX 3060 Hash Rate Limiter

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  • As if this wasn't expected. At least it's funny just how fast they cracked it.
  • Overdrive (Score:2, Interesting)

    by Cmdln Daco ( 1183119 )

    Instead, when mining is detected, the 'limiter' should put the GPU into an overdrive state and burn it up.

  • Nvidia's efforts to thwart cryptomining is likely fraught with legal issues that might prevent such an update.

    This argument has never stopped any company from pushing out an update which prevents or adds something. Look at HP and their updates which prevents third party toner cartridges. Your "smart" tv gets an update and suddenly you're inundated with ads or worse yet, if your tv doesn't check in every so often it becomes unusable. Let's not even get into the Microsoft updates which remove functionality

  • Comment removed (Score:5, Informative)

    by account_deleted ( 4530225 ) on Thursday March 11, 2021 @07:38PM (#61149710)
    Comment removed based on user account deletion
  • by rsilvergun ( 571051 ) on Thursday March 11, 2021 @07:48PM (#61149746)
    Taiwan has a drought and their foundries can't get enough water, limiting supply. There are already Ethereum ASICs and there's been ones for BTC for ages. The other various coins are too minor to be causing widespread shortages.

    This is just showboating on nVidia's part, so they probably didn't put a lot of effort into it. Hopefully when the monsoons hit in the summer the drought will end.
    • by monkeyxpress ( 4016725 ) on Thursday March 11, 2021 @08:01PM (#61149790)

      Linus tech tips seems to think that this is NVIDIA trying to force miners into buying the new specialised cards they sell. The problem with the last mining bubble is that the PC market got flooded with cheap video cards once all the miners shut down. NVIDIA is hoping to avoid this by ensuing that the cards used for mining cannot be repurposed.

      In other words, this is an attempt at building in obsolescence, not 'helping gamers'. If NVIDIA really wanted to help gamers get access to the limited supply of chips it would not be selling mining cards.

      • by Dwedit ( 232252 )

        There have been "Miner" only versions of cards which cannot act as video cards, but those got hacked into being Optimus devices.

        • Compute/calculation cards also tend to be horridly overpriced, and aimed at a niche. Mining is somewhat special in this context because its one where performance/Watt and price per 100 cards start mattering a lot.
          Going for actual compute cards will be pointless if they are mid end cards priced at high end because they got some extra software features.

      • I can't wait for the mining bubble to be over. Wasn't eth moving to a different kind of 'proof' supposed to fix this environmental waste?

      • by tlhIngan ( 30335 )

        In other words, this is an attempt at building in obsolescence, not 'helping gamers'. If NVIDIA really wanted to help gamers get access to the limited supply of chips it would not be selling mining cards.

        Why? What do you think nVidia should do with bad chips then?

        They're being binned - chips that aren't 100% perfect to meet 3090 specs become 3080s. Those that don't meet 3080 become 3060s. Those that barely fail, they may become the laptop MaxQ versions

        But the chips also have other things like HDMI and Displ

      • by AmiMoJo ( 196126 )

        Yep, the special mining cards don't have video jacks so there is no easy way to use them for gaming.

        People used to use them as part of an SLI setup, but SLI is being killed off (no new profiles since January 2020).

        I expect that Chinese recyclers will do something about this e-waste, maybe removing the chip and transplanting it to a new PCB, or finding a way to modify the cards into usable ones. They might also be good for cloud stuff, rendering and the like.

      • by DarkOx ( 621550 )

        I don't think they care about the secondary market, even to the extent it might crowd out their primary market. One of the big advantages to not fab'ing your own chips is that you don't have the fixed costs of a chip fab to carry. That means its ALWAYS going to be better to sell chips today than tomorrow. You capture the time value on the revenue and if your inventory levels are rising you just cut orders to the fab until you sell it out.

        I think Nvidia is probably more concerned about which market segment

    • The drought has little to do with the supply issues. In fact the drought itself is only threatening *future* supply. TSMC and others are running at full capacity and have been the entire time. The only thing the drought is calling into question is what the government and chip companies are doing to ensure they make it to monsoon season. TSMC has already laid out contracts and conducted a trial of shipping in water by truck to keep their production at full capacity.

      NVIDIA's shortages are related to increased

    • That isn't even true.

      https://www.techspot.com/news/... [techspot.com]

      They'll make it 'til May without interruption, allegedly.

  • I figured it'd take them maybe 3 days at most to crack that.
  • Is that they are intentionally software-handicapping a product in order to pad the bottom line.
  • Handshake overhead. (Score:4, Interesting)

    by Lordpidey ( 942444 ) on Thursday March 11, 2021 @08:38PM (#61149886) Homepage

    > . There is a secure handshake between the driver, the RTX 3060 silicon, and the BIOS (firmware) that prevents removal of the hash rate limiter.

    How much computational power is wasted on that?

    They're literally wasting computational power, to make a device of mine LESS usable.

    • by AmiMoJo ( 196126 )

      Almost zero, probably. It's very likely just checking a flag in the card's firmware, one time when the driver loads.

      There will probably be hacked firmwares soon. I don't think they expect it to be particularly secure, just a pain in the arse for people trying to work around it. They would need to flush a custom firmware, and maybe later drivers will detect it and refuse to work.

      Hacking the driver is tricky because Windows 10 really really doesn't like unsigned drivers.

  • Fuck NVIDIA (Score:4, Insightful)

    by maybe111 ( 4811467 ) on Thursday March 11, 2021 @09:10PM (#61149932)

    Fuck NVIDIA

    • the only valid response.

      you might think crypto is nonsense
      you might think it's wasteful
      you might think gamers have more of a 'right' to hardware

      but being okay with a company selling any kind of widget and then attempting to dictate its use to the consumer is always and forever total bullshit. This is just another side of the 'right to repair' coin. (no pun intended.)

  • Why are graphics cards useful for hashing algorithms in the first place? Cryptographic hash algorithms depend on bitwise operations such as AND, OR, XOR and rotations.

    Are bitwise operations really useful in graphics shaders that mostly operate on floating-point triplets?
    Why not just remove the bitwise operations from most of the computation units on consumer graphics cards?
    I'd think that the driver/card's MPU that assigns shaders to units could very well inspect the code and assign shaders with those instru

    • They are stream processors with many individual processing elements, coupled with a large amount of fast RAM independent of the host system; they are particularly efficient at performing a pre-set sequence of operations on a very large stream of data. They are also widely available, and easy to adapt to new algorithms. ASICs can be designed to perform the same types of tasks more efficiently, but aren't as versatile, and have substantial initial costs.

      Bitwise operations are necessary for some commonly used
  • So an RTX 3080 can do 98 MH/s. If a 3060 can only do 45-50MH/s that's pretty pathetic given the TDP. I have a row of RX570's doing 29MH/s and you can get those for $225 online right now. That's at around 100W actual TDP too btw.
    • Completely forgot the 2nd part of that post lol. ANd the 1080ti can do about 41MH/s with light overclocking and those are under $500 these days plus they're still respectable at gaming. The 3060 just isn't a good choice, especially considering the 3060ti and 3070 crush it.
  • Anybody with a brain in their head could have told you this.

  • If their cards are so good at mining, why don't they simply keep their entire manufacturing inventory to build a mega-mine and get rich?
    • by Kazymyr ( 190114 )

      How do you know they're not?

    • by K10W ( 1705114 )

      If their cards are so good at mining, why don't they simply keep their entire manufacturing inventory to build a mega-mine and get rich?

      They make the chips not necessarily the cards which aside from the small number of FE cards are usually 3rd party vendors using nvidias chips and design specs Nvidia enforces partners adhere to. On that note some of those aforementioned card manufacturers have been doing exactly that, zotac for instance. Not smart long term because you'll lose customers and the whole bad pr isn't great for business and many things factor into why it is a bad idea. You only break even after a given amount of time and if the

  • Crypto is a thing. There is obviously a big market for GPU mining hardware, obvious because the gamers are loudly admitting it is causing scarcity and because Nvidia is hobbling its own product in response.

    Nvidia might consider the opportunity to grow and make optimized cryptomining hardware. They can't beat China on Bitcoin but there seems to be a big market in alternatives. X11, Monero, hybrids like Nexus, and ASIC-resistant ones like Monero.

    So ramp up and make new dedicated hardware optimized for specifi

  • I admire the idea of proof-of-work as applied to a currenc system, but the more I read about it, the more firmly I believe it is our moral imperative to shun it, in its current form. The proof-of-work schemes used by the major 'crypto' currencies soles a purpose-free, throwaway problem producing nothing but waste heat. We should be pushing for systems which solve meaningful problems as proof-of-work instead (protein folding / vaccine antigen configurations / difficult math proofs / physics accelerator resul

Air pollution is really making us pay through the nose.

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