Modder saves $130 by building 32GB DDR5 desktop DIMMs from scavenged laptop memory — donor modules soldered to bare PCB flashed with custom firmware even run XMP

A few weeks ago, we covered Russian enthusiasts' proposition of assembling their own DDR5 RAM using procured modules and PCBs to cut costs. At the time, it was just an idea put forth by a local modder, but now he's back with a finished build that successfully runs at 6400 MT/s. A single 32GB stick of desktop DDR5 memory with proper XMP support — one that doesn't even look homemade.

Modder VIK-on acquired the actual RAM chips from a couple of SK Hynix-branded 16GB laptop SO-DIMM sticks, priced at 8,000 Rubles (~$100) each, a bit cheaper than their desktop counterparts at the moment. The PCB was sourced from China for around 600 Rubles (~$7.50), while an aftermarket heatsink cost 415 Rubles (~$5.23) from AliExpress. From there, the process was as easy as just putting together the parts like Lego.

This is where we should probably interject and inform that soldering ICs is not a piece of cake, especially if reballing is involved. You need proper BGA reworking stations and a lot of skill to not mess this up. It might seem simple, but it's one of those delicate maneuvers that require ample experience, which VIK-on is brimming with.

(Image credit: VIK-on via Videocardz)

(Image credit: VIK-on via Videocardz)

(Image credit: VIK-on via Videocardz)

After the new stick was ready, it was flashed with custom firmware from an Adata retail kit, allowing the memory to gain 6400 MT/s XMP support that any motherboard will be able to detect in BIOS. The entire project cost 17,015 Rubles, or about $218. That's quite a bit cheaper than a retail 32GB offering currently, which we found listed for at least $350 on Newegg right now. Prices are even rougher in Russia.

In the States, even if we don't take the 6400 MT/s speed into account, the cheapest 32GB stick goes for about $278, and that's an ugly, CL46 Dell OEM SKU. The RAM modules VIK-on used can be swapped with lower-cost parts, which the modder says he's exploring. For instance, instead of targeting 16GB laptop memory, 8GB sticks should be even cheaper.

At that point, one might even consider just using the SO-DIMM sticks as is with a desktop adapter that would add noticeable latency, but offer more convenience. This mod maintains signal integrity and also represents resilience. It's all about ingenuity in these trying times, and hacks like these will only increase in frequency (no pun intended) till markets normalize.

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