On 5/26/2025 1:04 PM, Chris M. Thomasson wrote:By a user of "reasonable" means.On 5/26/2025 1:00 PM, Chris M. Thomasson wrote:>On 5/26/2025 6:06 AM, Michael S wrote:>On Mon, 26 May 2025 06:46:01 GMT>
anton@mips.complang.tuwien.ac.at (Anton Ertl) wrote:
>antispam@fricas.org (Waldek Hebisch) writes:>Discs probably are less competitive than>
motherboards,
I expect them to be just as competetive as motherboards, at least in
the past. The fact that there are only 2-3 surviving HDD
manufacturers indicates intense competition in the past, possible less
today.
>but I would expect adding 256 MB to lead to 1>
dollar or more increase of cost.
What makes you think so. The DRAM chips on DDR4 DIMMs today hold
512MB (x8->4GB DIMM) up to 2GB (x16->32GB DIMM). There are 2GB DDR3
DIMMs (using 256MB chips), but they do not cost less than 4GB DDR3
DIMMs. Choosing a DRAM cache of 256MB rather than 512MB is unlikely
to save even one cent.
>
- anton
You are projecting computer memory prices on very different market.
The memory used for HD cache is likely an individual memory chip or two
chips and likely several generation older than devices used in computer
DIMMs. I would expect something like x16 DDR3. Looking for price of
such devices on Mauser I see following figures:
1 Gbit - $2.10
2 Gbit - $2.60
4 Gbit - $2.90
So, even assuming that disk manufacturer pays 1.5x to 2x less than what
we see on Mauser, there exists measurable difference between 128, 256
and 512 MB. The difference is smaller than suggested by Waldek but much
bigger than suggested by yourself.
I wonder if a HDD can have several multi-core processors on them,
where adding a new drive means you get not only more storage, but more
CPU's in the system like a NUMA machine? For some reason, the AI's
have a lot of "fun" when I talk to it about such things... ;^) lol.
>
Or even, have some ram on there, say a couple of gigs. So, adding a new
drive gives you more storage, more memory, and more cpus?
The CPU on the drive is not user programmable,
A CIA-like or NSA-like user probably HAS access to the necessary tools
to reprogram the drive.
and is almost certainlyWhy would it be.
not the same ISA as the "main" CPU in the system.
>
| Date | Sujet | # | Auteur | |
| 27 May 25 |  Re: Is Parallel Programming Hard, And, If So, What Can You Do About It? | 1 | MitchAlsup1 |
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