heyyyyyy.
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heyyyyyy. check this out
i bought one of those chinese motherboards which get the UEFI package from American Megatrends and then enable options with the guiding principle of "YES."
check out how many juicy bits it has
you can turn the memory scrambler on and off! it even tells you the seed it has on, i think, this specific boot?
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heyyyyyy. check this out
i bought one of those chinese motherboards which get the UEFI package from American Megatrends and then enable options with the guiding principle of "YES."
check out how many juicy bits it has
you can turn the memory scrambler on and off! it even tells you the seed it has on, i think, this specific boot?
it has soooo many PCIe configuration options. port bifurcation is just the start of it. there's probably an option for every power related register
you can enable "PCIe Stop & Scream", whatever the hell that is
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it has soooo many PCIe configuration options. port bifurcation is just the start of it. there's probably an option for every power related register
you can enable "PCIe Stop & Scream", whatever the hell that is
you can disable GPIO lockdown!
there's a function that prevents malicious UEFI Flash wearout, a type of attack I have not considered before. also you can turn it off
you can set UEFI boot stage breakpoints! -
it has soooo many PCIe configuration options. port bifurcation is just the start of it. there's probably an option for every power related register
you can enable "PCIe Stop & Scream", whatever the hell that is
@whitequark I see configuration for emphasis too.
That is a dangerous option to expose to me, I'd have probes on every lane of every addin card optimizing signal integrity and never get around to actually booting the thing
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@whitequark I see configuration for emphasis too.
That is a dangerous option to expose to me, I'd have probes on every lane of every addin card optimizing signal integrity and never get around to actually booting the thing
@azonenberg hahaha I know right? I now really want to get another one of these motherboards (it cost me about $40, including the Xeon CPU, with I think free delivery?)
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you can disable GPIO lockdown!
there's a function that prevents malicious UEFI Flash wearout, a type of attack I have not considered before. also you can turn it off
you can set UEFI boot stage breakpoints!I think my favorite one is just
PCIe Stop & Scream Support [Disable] -
@azonenberg hahaha I know right? I now really want to get another one of these motherboards (it cost me about $40, including the Xeon CPU, with I think free delivery?)
@whitequark lol nice... not sure if you saw my lab upgrade threads recently but i just scored half a TB of free DDR4 RDIMM and a pair of xeon platinums that i'm starting to deploy (it's a lot of work because each upgrade is displacing RAM/CPU that I then want to use to upgrade something else, so it's not just a single part swap)
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I think my favorite one is just
PCIe Stop & Scream Support [Disable]when you open the IntelRCSetup (what's RC?) the setup utility tells you "if you change some of these settings the system may malfunction"
that's an understatement of the year
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heyyyyyy. check this out
i bought one of those chinese motherboards which get the UEFI package from American Megatrends and then enable options with the guiding principle of "YES."
check out how many juicy bits it has
you can turn the memory scrambler on and off! it even tells you the seed it has on, i think, this specific boot?
@whitequark love to swizzle my bits for maintenance
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@whitequark lol nice... not sure if you saw my lab upgrade threads recently but i just scored half a TB of free DDR4 RDIMM and a pair of xeon platinums that i'm starting to deploy (it's a lot of work because each upgrade is displacing RAM/CPU that I then want to use to upgrade something else, so it's not just a single part swap)
@azonenberg niiiiice
I bought 16GB of 2133 DDR4 for this thing (it's going to be a quiet build server) plus 100GB or something of Intel Optane that I'll use as swap; this is my strategy for getting 100GB of almost-RAM for $100 or so
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when you open the IntelRCSetup (what's RC?) the setup utility tells you "if you change some of these settings the system may malfunction"
that's an understatement of the year
@whitequark rectangular chip
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I think my favorite one is just
PCIe Stop & Scream Support [Disable]@whitequark is this the new Halt and Catch Fire
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you can disable GPIO lockdown!
there's a function that prevents malicious UEFI Flash wearout, a type of attack I have not considered before. also you can turn it off
you can set UEFI boot stage breakpoints!@whitequark UEFI boot stage break points is crazy. I want this now.
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@azonenberg niiiiice
I bought 16GB of 2133 DDR4 for this thing (it's going to be a quiet build server) plus 100GB or something of Intel Optane that I'll use as swap; this is my strategy for getting 100GB of almost-RAM for $100 or so
@whitequark @azonenberg I see there is a whole load of cheap Optane floating around on eBay.
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when you open the IntelRCSetup (what's RC?) the setup utility tells you "if you change some of these settings the system may malfunction"
that's an understatement of the year
it also lets you unlock these specific MSRs that are completely undocumented and have no search hits besides some hackintosh person poking at them. no idea what they do or why there's a toggle
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it also lets you unlock these specific MSRs that are completely undocumented and have no search hits besides some hackintosh person poking at them. no idea what they do or why there's a toggle
if you want this motherboard, it is unbelievably easy. it's on sale for 30€, including the Xeon CPU it needs: https://www.aliexpress.com/item/1005008826220177.html
note that it is made to a price point and it is barebones: it has no USB3, for example. but on the flipside, you can split its PCIe x16 graphics port four ways and connect six PCIe Gen3 NVMe drives to it (plus some SATA)
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@whitequark UEFI boot stage break points is crazy. I want this now.
@jyn do you have 30 euro? it could be yours https://social.treehouse.systems/@whitequark/116143280563821829
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@whitequark @azonenberg I see there is a whole load of cheap Optane floating around on eBay.
@kbm0 @azonenberg been for a while yeah! 3DXpoint is great
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heyyyyyy. check this out
i bought one of those chinese motherboards which get the UEFI package from American Megatrends and then enable options with the guiding principle of "YES."
check out how many juicy bits it has
you can turn the memory scrambler on and off! it even tells you the seed it has on, i think, this specific boot?
@whitequark I should start a conspiracy theory that spread spectrum clocking and memory scrambling are evil attempts to decrease your performance by intel, and use this board to "prove" it
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@whitequark @azonenberg I see there is a whole load of cheap Optane floating around on eBay.
@kbm0 @whitequark @azonenberg is it really still cheap? I've been a refurb enterprise flash enjoyer but all the usual places got the same price rise as the new market
