Intel to disable insecure TSX feature on older CPUs
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cucaulay malkin
https://memegenerator.net/img/instances/71280258/im-this-close.jpg
KissSh0t
I wonder if this is to get those chips "ready" for Windows 11? ... if that makes sense?
Venix
Will this have an impact to performance ? Maybe no impact ? Small ? Just on specific cases ?
asturur
if it hasn't that 40% claim was bullshit in first place.
I think it depends if this tsx extension was explicitly used by software or used by microcode in order to perform other instrucions
asturur
@hilbert will you make a small test for the science?
fellix
TSX was problematic from its first iteration in Haswell. The RPCS3 emulator still supports it, but it's disabled by default and not recommended to be forced on due to possibility of fatal data corruption.
It's a nice performance feature to have, particularly with multi-thread intensive code, but implementation and validation in hardware is rather tricky and the strict memory ordering in x86 certainly makes it extra demanding.
rl66
nearly none (as exept bug it already bring nearly none).
Sometime something big on paper isn't so great in real condition.
Venix
Ok at least this is something still sucks but even if people really have to disable it they will not loose perfomance 🙂
fantaskarsef
So Haswell keeps it? Making it probably faster than the CPUs later on... oh Intel, you and your after sale cuts to performance because of "security" reasons.
tsunami231
yah more thing cripple my cpu?
According Hwinfo I have TXS enabled and running.
Dont see how disabling thing would make compatible but then again it security flaw? that been around since 2016? that intel is just now "disabling"
insp1re2600
could always get ya wallet out and upgrade?
tsunami231
you gona put the money in that wallet? 🙄
Fat chance in hell i upgrade anything with current prices and issues and what not. let lone for OS.
I get my 60FPS target in all my games I play, Short of game like Cyberpunk 2077 which I dont own for pc
illrigger
There has been a lot of speculation that MS is limiting the supported CPUs to ones that have hardware fixes for Spectre and/or Meltdown. There really isn't an actual fix for those flaws, and OS engineers still spend a lot of time coding new fixes to block emerging exploits to them. It would make sense that they want to move beyond it if they want an actual secure OS, and that by removing support for most of Intel's installed base it forces them to actually disable the parts of the CPUs that cause them.
tsunami231
do we eveh have cpu with "hardware" fixes for those cause last i checked even newer cpu still effected by those flaws.
Etiher way it dont mater to me
MegaFalloutFan
Right now TSX is important for PS3 emulation, no other reasons really.
My backup PC has ES 10900K so TSX works and cant be disabled.
teleguy
According to other articles the feature has already been disabled ages ago on Haswell and Broadwell since it never worked properly there.
fantaskarsef
Ah that's what they disabled. I vaguely remember something about that. I guess I really missed it in the meantime. Still the situation has some irony to it, imho.
Alessio1989
TSX is still a thing in RPCS3, but they improved performance without it as well 1 year ago. https://rpcs3.net/blog/2020/08/21/hardware-performance-scaling/
user1
colour me surprised that intel managed to bork the feature twice
Astyanax
ps3 emulation has TSX disabled by default due to corruption.
