If it is possible to be upgraded, how to do improvements of a:
Laptop System: ASUSTeK product: X58C v: 1.0

If it is possible to upgrade to another CPU with 2 cores (or more cores), if it is possible to upgrade to another CPU on high frequency;
If it is possible to upgrade to more RAM for example 2 x 2GB or 2 x 4GB or 2 x 8GB;

The information from those commands won't tell you it's upgrade capacity. You will need to look for the specs online. The cpu itself likely is soldered to the board and laptops also don't generally handle overclocking well. At best I think ram and hard drive / ssd are upgradeable.

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Where are the specs online?

If there is a link for specs online I don't found it.
asus.com has not information about ASUS X58C AP002D, probably it is a very old laptop model.

According to Crucial's memory finder, the max memory is 4GB and they didn't have anything compatible in stock. See:

https://www.crucial.com/compatible-u...-for/asus/x58c
and:
https://mobilespecs.net/laptop/ASUS/ASUS_X58C.html

Compatible DDR2 ram will be hard to find. Any 2.5 inch SSD would probably be compatible with a little fiddling to get a tight fit. I wouldn't spend anything significant on upgrades as that cpu will have a very difficult time with the modern web and surfing will become an exercise in frustration.

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As far as the CPU itself, according to some searches on that model, the CPU is soldered to the board, so the only way to upgrade CPU would be to upgrade the entire motherboard.

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What a pity ... the current CPU is probably soldered to the Motherboard, because I found Intel Core 2 Duo T7400 2.16 GHz Dual-Core (LF80537GF0484M) Processor for a price only ~12 USD, Socket 479 as of the current CPU.
Found RAM DDR2 4GB 800 MHz for a price 54.99 USD - 2x4GB = ~110 USD, thats expensive may be.

According to CPU-World, the Intel Celeron D 220 is a "BGA" CPU, BGA meaning "Ball Grid Array." These CPUs are indeed soldered directly onto the motherboard.

This laptop uses the SiS M762 chipset, which supports a maximum of 4 Gb RAM. You should be able to find two 2 Gb DDR2 SODIMMs on eBay for around $20, but I leave it to you to decide whether it's worth it or not.

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Welcome to LQ! KIM-1 (6502)?

And (FYI: my interest) the CPU doesn't have VT-x, so VirtualBox would have to be an old 5.x and could only run 32bit OS'es.

The laptop is worth about $30 max

But it will run 64bit 'light' Linux fine. Like MX, even with 2G ram. (But it looks like you might have 4G)
More that 2G ram might not get used, unless you open multiple complex web pages (or run some huge app)

Fine as-is for simple ... (what did you want to use it for? Got other PCs?)

p.s. There's a button at top, to mark thread as Solv'd, if you want.

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https://en.wikipedia.org/wiki/Apple_II
The first computers went on sale on June 10, 1977 with an MOS Technology 6502 microprocessor running at 1.022,727 MHz

This Laptop is not mine. This is my brother's Laptop. He has a PC with Windows and Autocad, but he wants to use this Laptop for Windows and Autocad sometimes.
Because this Laptop works very slow with Windows 10 he told me to discover about some upgrade of CPU, RAM and may be SSD ...
Now I will tell him, that is not worth to do any upgrade at all.

There's a few AutoCAD alternatives (but he probably wants to stick with 'the real thing').
https://fosspost.org/open-source-cad...ad-alternative

Maybe put (MX)Linux on old laptop & give it to someone as a 'starter' system. Best wishes.

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