HT on or off for gaming on Haswell-E?

[BD2003]

Do you guys think HT is a benefit or a detriment for gaming on Haswell-e? It's no longer that controversial with quad cores, but I wonder if having those 2/4 extra cores might change that?

 

[Racan]

http://www.hardware.fr/focus/101/perfs-avec-2-4-6-8-coeurs-4-jeux-loupe.html

These benchmarks might interest you OP, depends on the game it seems.

 

[CropDuster]

HT causes a lot of jerkiness on my X5650 in Battlefield 4 so I leave it off. Racan's post seems like it may be the same for the new Haswell-Es also.

 

[Flapdrol1337]

If all you do is game you could turn it off, some titles don't like it, and with at least 6 cores at your disposal hyperthreading probably won't get you extra performance.

If you also do things that benefit from hyperthreading I'd leave it on.

 

[Quad5Ny]

HT causes a lot of jerkiness on my X5650 in Battlefield 4 so I leave it off. Racan's post seems like it may be the same for the new Haswell-Es also.

If your turning off HT only for games, your better off just setting the Affinity in task manager (uncheck every other core) or create a custom Shortcut.

 

[Lepton87]

If your turning off HT only for games, your better off just setting the Affinity in task manager (uncheck every other core) or create a custom Shortcut.

That's what I wanted to write but I didn't check if it works as well as turning HT off in BIOS. In theory it should be just as good or even better because the game wouldn't use a logical core in the care occasion that the game really pegged all 6 threads some background tasks could use a logical core but that's really a corner case. Anyway I'm shocked that after all those improvement to window's scheduler it still can't handle HT like it should. Maybe we should create a thread with a list of games where turning HT off is beneficial for performance for both 4/8 and 6/12 and 8/16 HW CPUs? Anyone wants to do it? I would do it but I don't have time now but if no one pick up on the idea I'll consider doing it myself unless someone already did that in that case can someone link it?

 

[escrow4]

Leave it on. 2-3FPS is irrelevant, Watch Dogs gets a fat old boost if an engine can take advantage of it it will. No point really fiddling with it.