In my experience CL2 DDR400 and the likes were very poorly manufactured, eventually dying within 2 years time span. Possibly this is why you can't find any on the market . I remember throwing in the bin Gskill, Corsair, Kingston e, and ...Geil, Gell, Gel, something? Can't remember the real name now.
Plus, I remember it didn't change much from a real gaming perspective. Or at least I didn't notice anything much, but a better scoring with benchmark softwares. Orocessors only had hyper threading with Pentium4, but the feeling was WinXP simply sucked at it, and it was just 1 core anyway, with no real software benefitting from hyper threading.
Anyway, I feel confident to say very few might have survived, and eventually got to the dumpster after PC refresher. Back then there not so much profit in vintage PC, and people tended to just change and move over. But this is my personal take anyway, might not be relevant.

It isn't only the Winbond BH5 that will be getting 3.3V, but also the other end - memory controller in chipset or CPU in Athlon 64.

OCZ Platinum 1GB and Kingston HyperX 1GB DDR400 run at CL2. 2.6V is enough, no crazy voltage is required.

People OCed memory in the past because they couldn't afford a more powerful system. These days just get s754/939 with AGP or Intel 775.

BitWrangler wrote on 2026-05-21, 23:45:

Those were the popular chips when 256MB modules were normal and 512MB for deeper pockets, so you're looking for the wrong thing if you want 1GB modules.

What’s wierd is up to about 8 years ago
Finding 512mb, 1gb (non-ecc) 168pin sdram was cheap and easy,
Even wierd 4gb and 8gb 168pin sdram kits for a while were being cleared out cheap

https://www.amazon.com/X5025a-Sdram-133Mhz-Re … y/dp/B00HJKZCL6

Even back in ye olde times, I was running 2gb (2 sticks) of sdram in my slower than it should be Athlon .

DDR1 seems like a red headed step child or a micro generation, for me even back in the day -2006 it seemed easier to find large high density sdram than large ddr and then ddr2 came out and ddr1 seemed to stay expensive

It’s almost like ddr1 was a poorly thought out stop gap .

Based on your comments about folks staying with sdram (I did for other reasons, cheap motherboard with a fast laptop Athlon and more ram than normal on Win2k) maybe ddr1 had a shorter life and lower numbers in the field especially accounting for the fact lousy overpriced 200mhz ddr pc1600 was a thing for some reason

Here's a good read: https://www.reddit.com/r/overclocking/wiki/ram/ddr1/

Athlon 64 will be fine with 3.3v memory.

Here is some Geil that is rated to run at DDR600. The price looks crazy but adjusted for inflation, it would be around $500

https://ebay.io/m/s2uCaZ

That being said, yes great ddr1 is somewhat hard to find for a good price today, but there are a couple factors at play.

1. It was somewhat hard to obtain and very pricey when new.
2. Not everybody kept what they had after they upgraded. Much of it would have been given away or simply tossed in the trash.
3. Most sellers have no idea what they have and the listings don't necessarily reflect what is being sold
4. The AI trash titles and descriptions on eBay are making it harder and harder to find anything.

That being said, I have been able to get at least 2x sets of Corsair branded TCCD as well as a good set of Geil and some really good sets of OCZ, all for very reasonable prices withing the last couple of months.

I have a couple of Corsair sticks rated 550MHz 2.5-4-4-8. Presumably on TCCD, since nothing else could achieve such clocks.

rmay635703 wrote on 2026-06-22, 11:41:

What’s wierd is up to about 8 years ago Finding 512mb, 1gb (non-ecc) 168pin sdram was cheap and easy, Even wierd 4gb and 8gb 168 […]
Show full quote

BitWrangler wrote on 2026-05-21, 23:45:

Those were the popular chips when 256MB modules were normal and 512MB for deeper pockets, so you're looking for the wrong thing if you want 1GB modules.

What’s wierd is up to about 8 years ago
Finding 512mb, 1gb (non-ecc) 168pin sdram was cheap and easy,
Even wierd 4gb and 8gb 168pin sdram kits for a while were being cleared out cheap

https://www.amazon.com/X5025a-Sdram-133Mhz-Re … y/dp/B00HJKZCL6

Even back in ye olde times, I was running 2gb (2 sticks) of sdram in my slower than it should be Athlon .

DDR1 seems like a red headed step child or a micro generation, for me even back in the day -2006 it seemed easier to find large high density sdram than large ddr and then ddr2 came out and ddr1 seemed to stay expensive

It’s almost like ddr1 was a poorly thought out stop gap .

Based on your comments about folks staying with sdram (I did for other reasons, cheap motherboard with a fast laptop Athlon and more ram than normal on Win2k) maybe ddr1 had a shorter life and lower numbers in the field especially accounting for the fact lousy overpriced 200mhz ddr pc1600 was a thing for some reason

It was an end of the road platform just as demand ramped for higher RAM amounts, it was one of those MS Windows upgrade cycle waves pushed on us by XP SP3 being a pig on anything less than 1GB and the new 64bitness needing nearly twice the RAM. So there were DDR platforms that "just about" did dual core on S939 and DDR platforms that "just about" did early core2 on 775, and those sucked up some of the biggies at the time. But they seemed to need different stuff than the "high revving" Socket A and S754 builds. Then I guess Vista blew RAM requirements past 2GB for smooth experience not all that long after and kept prices high as a kite, for last ditch upgrades.

The DDR platforms "ran out of puff" rapidly after that and probably got shredded as ewaste as retro sensibilities had not really caught on at all yet, even for 486. Plus I think the 2008 crash managed to dump a lot of fairly recent business boxes with shiny DDR2 and faster Core2 CPU on the market which made it a no brainer to get a twice as fast system unit for $100 and swap your GPU and sound etc over. I remember late 2008 going into 2009 as a bit of a DDR2 upgrade sweet spot. Low ebb of pricing. I picked up DDR2-800mhz modules for $100 at a Bestbuy new year sale then and could not match the damn things with another 4GB for years after as the pricing on 800Mhz capable 2GB soared and they got rare for a bit.