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AMD's Ryzen 9 9950X3D2 Dual Edition crams 208MB of cache into a single chip

arstechnica.com

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Re: AMD's Ryzen 9 9950X3D2 Dual Edition crams 208MB of cache into a single chip

#131

Post by adrian_b »

Aurornis wrote: post #117
adrian_b wrote: post #81

Earlier quoted context omitted.

$2800 is still a huge price in comparison with the last year. Last summer, a 9950X3D + motherboard + cooler + 128 GB DRAM + VAT sales taxes was the equivalent of $1400 in Europe, where I live. That's half of your quoted price. That was without case and PSU, but adding e.g. $200 for those would not change much.

Yes of course. We all know prices are up. I commented because someone thought that $4K was the going price for 128GB of RAM, which is way too much even with the demand crunch.

Due to the high prices of DRAM and SSDs they now are the greatest fractions of the total price of a computer.

In January I was forced to upgrade an ancient Intel NUC, by replacing it with an Arrow Lake H based ASUS NUC. The complete system with 32 GB DRAM and 3 TB SSDs has cost EUR 1200, including VAT sales tax.

The distribution of the price was like this:

  Barebone mini-PC:   41%
  32 GB DDR5 SODIMMs: 26%
  2 TB PCIe 5.0 SSD:  24%
  1 TB PCIe 4.0 SSD:   9%
Since then, the prices of DDR5 and SSDs have continued to increase, so now the fraction spent for memory would be even higher than 59%.

Before 2026, for so small amounts of memory its cost would have been much less than the rest of the system.

Re: AMD's Ryzen 9 9950X3D2 Dual Edition crams 208MB of cache into a single chip

#132

Post by secondcoming »

mort96 wrote: post #125
2001zhaozhao wrote: post #69

Earlier quoted context omitted.

Yeah the only way to run 4 sticks of DDR5 decently is with Intel. It's a bit of a shame that you can't cram enough RAM to run big models. The most I could get running on 10GB VRAM + 96GB RAM was a REAP'd + quantized version of MiniMax-M2.5

Got it running with 4800MT/s and literally 30 minute boot times in an AM5 machine. The 30 minute boot time could be worked around by enabling the (off-by-default) memory context restore option in BIOS, but it really made me think something was broken and it wasn't until I found other people talking about 30 minute boot times that I stopped debugging and just let it sit for an eternity. It's so bad. I don't get why th…

Your machine takes 30 minutes to boot because of the RAM? Or it takes 30 minutes to load a model?

Re: AMD's Ryzen 9 9950X3D2 Dual Edition crams 208MB of cache into a single chip

#133

Post by WD-42 »

mort96 wrote: post #125
2001zhaozhao wrote: post #69

Earlier quoted context omitted.

Yeah the only way to run 4 sticks of DDR5 decently is with Intel. It's a bit of a shame that you can't cram enough RAM to run big models. The most I could get running on 10GB VRAM + 96GB RAM was a REAP'd + quantized version of MiniMax-M2.5

Got it running with 4800MT/s and literally 30 minute boot times in an AM5 machine. The 30 minute boot time could be worked around by enabling the (off-by-default) memory context restore option in BIOS, but it really made me think something was broken and it wasn't until I found other people talking about 30 minute boot times that I stopped debugging and just let it sit for an eternity. It's so bad. I don't get why th…

I’m in the same situation! My machine will take 2-5 minute to post every few reboots, it seems random. The messed up part is the marketing material says this things can handle 256gb of ram or whatever absurd number, f me for thinking then 128gb should be no problem. Honestly this whole thing has soured me on AMD. Yea they have bigger numbers than intel but at what cost, stability?

Re: AMD's Ryzen 9 9950X3D2 Dual Edition crams 208MB of cache into a single chip

#134

Post by WD-42 »

secondcoming wrote: post #132
mort96 wrote: post #125

Earlier quoted context omitted.

Got it running with 4800MT/s and literally 30 minute boot times in an AM5 machine. The 30 minute boot time could be worked around by enabling the (off-by-default) memory context restore option in BIOS, but it really made me think something was broken and it wasn't until I found other people talking about 30 minute boot times that I stopped debugging and just let it sit for an eternity. It's so bad. I don't get why th…

Your machine takes 30 minutes to boot because of the RAM? Or it takes 30 minutes to load a model?

It's the RAM. It needs to "trained" which takes some time but for for some reason these boards seem to randomly forget their training, requiring it to happen again.

Re: AMD's Ryzen 9 9950X3D2 Dual Edition crams 208MB of cache into a single chip

#135

Post by pixl97 »

2001zhaozhao wrote: post #70

I don't really see a huge reason to buy this other than it being a top-tier halo product. For gaming, AMD already pins the game threads to the CCD with the extra cache pretty well. For multi-threaded workloads the gain from having cache on both CCDs is quite small.

It really comes down to how much more this CPU is over the next one down if you're building a new rid for a long period of time. I'm running on a 5950X which is coming up on it's 6 years in November. I could have spend a little less on the next model down, but I expect this rig will last me for a few more years (especially with how much memory is). The per year extra expense for that CPU was almost nothing over its lifetime.

Now, would I upgrade an existing computer with a slightly slower processor with it, probably not.

Re: AMD's Ryzen 9 9950X3D2 Dual Edition crams 208MB of cache into a single chip

#136

Post by rietta »

I am so grateful that I bought my 128 GB ram kit in January of last year for my own 9950 upgrade. We just built my dad a 7000 series to replace his old AM4 (2017 build) and 32 gigs DDR five was nearly the same price at Micro Center that I paid last year. I was able to gift him an Nvidia 1060 discreet graphics card so that he could continue to run his two monitors. The newer motherboards have much less on board capability for that.

Re: AMD's Ryzen 9 9950X3D2 Dual Edition crams 208MB of cache into a single chip

#137

Post by hu3 »

rietta wrote: post #136

I am so grateful that I bought my 128 GB ram kit in January of last year for my own 9950 upgrade. We just built my dad a 7000 series to replace his old AM4 (2017 build) and 32 gigs DDR five was nearly the same price at Micro Center that I paid last year. I was able to gift him an Nvidia 1060 discreet graphics card so that he could continue to run his two monitors. The newer motherboards have much less on board capabi…

1060 is a sweet card for multi monitor. good on you for gifting him.

Re: AMD's Ryzen 9 9950X3D2 Dual Edition crams 208MB of cache into a single chip

#138

Post by rietta »

hu3 wrote: post #137
rietta wrote: post #136

I am so grateful that I bought my 128 GB ram kit in January of last year for my own 9950 upgrade. We just built my dad a 7000 series to replace his old AM4 (2017 build) and 32 gigs DDR five was nearly the same price at Micro Center that I paid last year. I was able to gift him an Nvidia 1060 discreet graphics card so that he could continue to run his two monitors. The newer motherboards have much less on board capabi…

1060 is a sweet card for multi monitor. good on you for gifting him.

I upgraded to a 4070 super last year. I ran both cards at the same time for a little bit, but it got really frustrating to keep the wrong card from being assigned to a particular task with llama. I really should’ve taken an R&D tax credit on my AI research but I’m still able to expense it for the business.
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