top | item 39057944 (no title) buzzdenver | 2 years ago So around 3x of what AWS has? I guess this is more about what motherboard they have, and not an on-prem vs cloud difference. discuss order hn newest adrian_b|2 years ago 1.5 times greater speed comes from 768-bit vs. 512-bit width of the memory interface.Another 1.5 times greater speed comes from DDR5-4800 vs. DDR4-3200.The rest may be from virtualization and other overheads. champtar|2 years ago Number of DIMM is important, I know the standard BOM at my company has way more memory that we use just to have more bandwidth. sliken|2 years ago Bandwidth increases nearly linearly with adding dimms until you get to 1 dimm per memory channel. After that there's very small improvements related to more open pages. More open pages doesn't help with pure bandwidth benchmarks though.
adrian_b|2 years ago 1.5 times greater speed comes from 768-bit vs. 512-bit width of the memory interface.Another 1.5 times greater speed comes from DDR5-4800 vs. DDR4-3200.The rest may be from virtualization and other overheads.
champtar|2 years ago Number of DIMM is important, I know the standard BOM at my company has way more memory that we use just to have more bandwidth. sliken|2 years ago Bandwidth increases nearly linearly with adding dimms until you get to 1 dimm per memory channel. After that there's very small improvements related to more open pages. More open pages doesn't help with pure bandwidth benchmarks though.
sliken|2 years ago Bandwidth increases nearly linearly with adding dimms until you get to 1 dimm per memory channel. After that there's very small improvements related to more open pages. More open pages doesn't help with pure bandwidth benchmarks though.
adrian_b|2 years ago
Another 1.5 times greater speed comes from DDR5-4800 vs. DDR4-3200.
The rest may be from virtualization and other overheads.
champtar|2 years ago
sliken|2 years ago