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Recent content by serpretetsky

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    RTX 5090 FE Molten 12VHPWR

    Im not questioning your electronics experience, but from what im reading you didnt understand my simulation. I assumed, for simplicity, that the vrms are driving a constant power load ( the gpu). So just assume the gpu is runnng a relatively constant workload. I make this simplification...
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    RTX 5090 FE Molten 12VHPWR

    I thought about it some more. Let me rephrase what I think your argument is. Trying to get good power delivery out of pins that have poor contact is doomed to failure. Common bus, or separated, doesn't matter. However, with separated bus, its easier to monitor each voltage, and immediately...
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    RTX 5090 FE Molten 12VHPWR

    I don't understand. Redo my simulation with R1 at somewhere between 10mohms and 100mohms. Now the combined bus works comfortably, and the separated bus slowly degrades and fails, just like you feared. How is this better. Again I dont understand. VRMs typically try to maintain voltage on the...
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    RTX 5090 FE Molten 12VHPWR

    Ok, so to the suggestion to simply not use a common bus on the GPU to get good load balancing, my response is thus: DO NOT DO THIS. If anyone thinks I modeled anything wrong below, speak up. Ok, here is the setup. Below is a common bus setup. The 12V on the left is the PSU. The 4 resistors...
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    RTX 5090 FE Molten 12VHPWR

    Agreed, per pin current monitoring is a different story to load balancing.
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    RTX 5090 FE Molten 12VHPWR

    Yeah, im still not seeing it. If i have time I'll run a spice simulation at some point. Just need to figure out how to model a constant power load that doesn't care what the voltage input is (VRM). Notes for me in case I try this: ltspice bi component. I=P_load/V(V_in). good starting...
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    RTX 5090 FE Molten 12VHPWR

    Has anyone actually run the numbers on this idea. Or run a spice simulation? Every time i see this idea I have a hard time seeing how this would help. The theory is that each VRM gets its own pin from the connector, and the VRMs would be setup to load balance, meaning each pin would be forced...
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    RTX 5090 FE Molten 12VHPWR

    Not disagreeing or agreeing with the conclusion, but it would be nice if the response had direct link references to cross check all of the data.
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    AMD Ryzen 7 5800X3D 10th Anniversary Review

    Im less confused about why this chip is re-released, and more confused on why techpowerup re-reviewed the same chip again. I guess to have updated benchmark scores?
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    RTX 5090 FE Molten 12VHPWR

    It is strange that it is always the +12v side. I wonder. Maybe the ground pins aren't as susceptible because there are so many ground pins on the pcie x16 slot itself. A lot of them are really signal grounds, but should carry the current just the same (most modern digital designs tie all...
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    ISPs’ long nightmare of having to list all the fees they charge is finally over

    ? Im confused by your question. Do you not see these nice labels that show all the fees? So I think they CURRENTLY they list all the fees, no? Maybe 10 years ago it was a nightmare trying to compare internet between companies, but then this happened and it was awesome. It's not clear to me if...
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    ISPs’ long nightmare of having to list all the fees they charge is finally over

    Does that mean we're getting rid of these nice labels ISP's have been doing? I really like them:
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    Welcome to Archality - AI Inference by Enthusiasts

    Im going to assume a bot hasnt hijacked your account. Maybe this is a tricky question this early in the game, but how would this compare to other machine learning solutions from dedicated ml companies like tenstorrent or cerebras.
  14. S

    ZOTAC RTX 5090 12V-2×6 connector completely melts with below-recommended 850W PSU

    Typically in a situation like this you dont load balance, you just use larger safety margins. Larger connector, more pins, different materials or mechanical design, etc. Load balancing is extra complexity that is probably not needed.
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    Satellites Are Leaking the World’s Secrets: Calls, Texts, Military and Corporate Data

    no, i wouldnt. Anything that actually needs to be encrypted needs to be encrypted end to end. Encrypting some random link in the middle is a waste of energy.
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