Tuna-Fish

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    Tuna-Fish replied to the thread Discussion RDNA4 + CDNA3 Architectures Thread.

    Why would you imagine that a 12GB model can be priced lower than the 8GB one?

    Sunday at 4:06 PM
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    Tuna-Fish replied to the thread Question Intel's future after Pat Gelsinger.

    6+ layers of middle management?

    Friday at 10:00 AM
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    Tuna-Fish replied to the thread Question Zen 6 Speculation Thread.

    Note that starting with Zen5, the TSVs don't go on the CCD. The CCD is face down on top of the cache chiplet, so no holes need to be...

    Apr 17, 2025
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    Tuna-Fish replied to the thread Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000).

    Once they get a PCH that can do 5.0 for the uplink that will probably be fine for a while.

    Apr 15, 2025
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    Tuna-Fish replied to the thread Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000).

    No. Because AMD cannot spend more money today to have more chiplets with 3D cache. The lead time for increasing capacity is measured in...

    Apr 15, 2025
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    Tuna-Fish replied to the thread Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000).

    The integration capacity is still limited. AMD keeps buying more capacity every generation, but it's slow to build. They cannot put...

    Apr 13, 2025
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    Tuna-Fish replied to the thread Question Zen 6 Speculation Thread.

    There is no engineering effort to gut the FPU, AMD has already designed it to be configurable. You just pick whether you want 256-bit or...

    Mar 29, 2025
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    Tuna-Fish replied to the thread Question Zen 6 Speculation Thread.

    To be clear, it will still run 512-bit code, just at half rate. And using 512-bit registers is still a win, because it means frontend...

    Mar 28, 2025
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    Tuna-Fish replied to the thread Discussion RDNA4 + CDNA3 Architectures Thread.

    Isn't 60-series most of the market? I think 200k upper midrange GPUs is not little.

    Mar 26, 2025
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    Tuna-Fish replied to the thread Question Zen 6 Speculation Thread.

    They really don't need that. 8xZ6c as a single CCX is already an absolutely massive upgrade over PS5, and I frankly think that the...

    Mar 24, 2025
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    Tuna-Fish replied to the thread Question Zen 6 Speculation Thread.

    Sparse or not? Because 8CU is 40TOPs FP16 sparse also 40TOPs of INT8 not sparse.

    Mar 21, 2025
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    Tuna-Fish replied to the thread Question Zen 6 Speculation Thread.

    I think I know why it's that big. The MS requirement for the copilot+ sticker is 40 tops of sparse fp16, right? 8 CU of RDNA4 hits that...

    Mar 21, 2025
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    Tuna-Fish replied to the thread Discussion RDNA4 + CDNA3 Architectures Thread.

    Yes, but among people not you there is variability in temperatures, power supply and silicon quality. All of that influences stability...

    Mar 21, 2025
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    Tuna-Fish replied to the thread Question The AVX-512 thread.

    Except when we want range? In FP types, you trade off range and precision. Takum decided that 10^77 was both desperately needed, and...

    Mar 19, 2025
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    Tuna-Fish replied to the thread Question The AVX-512 thread.

    Huh? It just throws away most of the range of ieee754 double for better precision?

    Mar 19, 2025

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