32pin narrow-dip? I'm not even sure this exists, can you post pictures?

As a quick workaround you may get some 16p ones (eg. https://www.aliexpress.com/item/1005001333427116.html) and use two in a row to form a 32pin socket. Not so pretty but should work.

fgenesis wrote on 2021-05-18, 13:19:

32pin narrow-dip? I'm not even sure this exists, can you post pictures?

I failed to find anyone selling those sockets, too. They definitely do exist (did exist?) on late 486 mainboards. 512kBit and 1MBit SRAMs (like the infamous "ISSI" 10ns chips) have a 32pin narrow case. They were used for 256K single-bank cache (cheaper than 256K dual-bank) and for 512K and 1M cache sizes.

These sockets are obsolete, NOS is the only option if you want "authentic" dual-leaf type.
You can solder SIP headers like this instead https://aliexpress.com/item/32892386779.html

Thanks for the replies. At least I know I cant get them rather than I couldn't find them. I will order up one of the solutions suggested

mkarcher wrote on 2021-05-18, 13:55:

like the infamous "ISSI" 10ns chips

These? Got those from aliexpress about a year ago, so far not used.
Could you elaborate a bit? Is there are problem?
I planned to stuff them into a mainboard that supports them and isn't maxed out.

Or are you referring to some shady mainboards with fake cache chips?

IS61C1024 datasheet has no information about 10ns version + markings 100% fake.
In my case 1 out of 5 was dead, other work fine in my HOT433 rev.4 with fastest timings & 33MHz bus.

Ok, so not an original part but someone made them and marketed them under a fake ISSI name. löl, figures. As long as they work with my 133 MHz pentium i won't complain...

fgenesis wrote on 2021-05-18, 20:39:

Ok, so not an original part but someone made them and marketed them under a fake ISSI name. löl, figures. As long as they work with my 133 MHz pentium i won't complain...

Exactly. Consensus is: They seem to have bad quality control (expect around 10% "dead on arrival") and I think no one tested whether the 10ns specification is real. On the other hand, the chips that are not dead work perfectly for many VOGONS users, and no one complained that they are "way too slow", so likely they are 12ns or better.