The most recent incarnation of PCI RAM cards was produced by Gigabyte in 2005 and 2006 under the names i-RAM and GC-RAMDISK, respectively. They supported 4 slots totaling 4 GiB of DDR-400.

Dec 9, 2019 · I watched this video and got inspired that this kind of hardware could be used as a LVM cache for m.2 pcie SSD. I believe that this would greatly improved performance even if it's size would be pre...

Dec 10, 2020 · This appears in lspci on my Dell XPS 13 9310: 0000:00:14.2 RAM memory: Intel Corporation Device a0ef (rev 20) Does RAM work over PCIe now?

Dec 5, 2021 · The M.2 slot only supports up to x4 PCI-E lanes, which, with the PCI-E 4.0 standard, limits the bandwidth to ~7.9 GB/s and the far future PCI-E 5.0 standard to a likely 15.8 GB/s. As for virtual memory, yes, similar to a HDD, we can use an SSD for virtual memory, but keep in mind this is as an extension to RAM, not a replacement.

Oct 18, 2015 · That is, one PCI (e) device can directly access the memory or registers of another PCI (e) device, or main system ram, without regard to where it is located.

Aug 1, 2012 · PCI is still very common and included in motherboards. Older slot types include EISA (black) and AGP (brown - for graphics cards only). No one makes RAM for PCI/PCI-E slots, RAM has had its own dedicated slim slot type on motherboards for about 20 years now (in the ISA days you could buy memory boards that plugged into the ISA slots).

Could someone please clarify the difference between memory and I/O addresses on the PCI/PCIe bus? I understand that I/O addresses are 32-bit, limited to the range 0 to 4GB, and do not map onto system memory (RAM), and that memory addresses are either 32-bit or 64-bit.

Oct 22, 2012 · In my previous question, I established that the memory address used by PCI/PCIe devices does not have to mapped to system RAM, but could also refer to "on device" memory, e.g. RAM or registers. Bu...

I'm an absolute beginner starting to understand the PCI Express protocol and I need some clarifications about its mechanics. I understood that a PCI Express endpoint device may have some memory BAR mapped in the system memory (is it …

Quick question, I was reading the OSDev Wiki page regarding PCI and it says the following - Base address Registers (or BARs) can be used to hold memory addresses used by the device, or offsets fo...