Hyperthreading or not?
Nov 24, 2019 16:46:09 #
My computer has old CPU's. It has 2 Xeon 5620 and each has 4 cores. I can enable hyperthreading so each can run 8 threads so the total is 16 threads. So far hyperthreading is enabled but I won't if I should disable it?
Nov 24, 2019 17:41:15 #
Disable it and see if there is a diminishing of performance for CPU intensive tasks.
Nov 24, 2019 18:50:45 #
BebuLamar wrote:
My computer has old CPU's. It has 2 Xeon 5620 and each has 4 cores. I can enable hyperthreading so each can run 8 threads so the total is 16 threads. So far hyperthreading is enabled but I won't if I should disable it?
Doesn’t it depend mostly on whether your apps take advantage of multithreading? Some do, some don’t.
Nov 24, 2019 19:02:24 #
Peterff wrote:
Doesn’t it depend mostly on whether your apps take advantage of multithreading? Some do, some don’t.
That's true but my question related to running Photoshop CC and Premiere Elements. Other apps running on my PC doesn't tax my computer as much, so a little slow isn't a problem.
Nov 24, 2019 19:21:40 #
BebuLamar wrote:
That's true but my question related to running Photoshop CC and Premiere Elements. Other apps running on my PC doesn't tax my computer as much, so a little slow isn't a problem.
Ahh. I didn’t see that. I’m currently rebuilding my main computer, and chose a cpu that only has physical cores, but can be over clocked. We’ll have to see how that goes.
Good luck with your tests.
Nov 24, 2019 21:39:12 #
Peterff wrote:
Ahh. I didn’t see that. I’m currently rebuilding my main computer, and chose a cpu that only has physical cores, but can be over clocked. We’ll have to see how that goes.
Good luck with your tests.
Good luck with your tests.
If I disable hyperthreading, each of the 2 CPU still have 4 physical cores and thus the PC has a total of 8 physical cores so I think it's not too few.
Nov 25, 2019 08:38:19 #
AirWalter
Loc: Tipp City, Ohio
BebuLamar wrote:
My computer has old CPU's. It has 2 Xeon 5620 and each has 4 cores. I can enable hyperthreading so each can run 8 threads so the total is 16 threads. So far hyperthreading is enabled but I won't if I should disable it?
Normally every CPU I had installed with hyperthread on by default. It only kicks in if the system asks for it.
Nov 25, 2019 09:20:05 #
It's tough to write apps to deliberately take advantage of multicore processor chips. Usually it's left up to the compiler to recognize when program fragments can be split up into smaller parallel tasks advantageously. I wouldn't worry about it unless you're deep into the weeds and have some knowledge about granular timing because many other factors affect overall performance speed. For example, variability in disk i/o can swamp parallel processing effects unless you have very find control of both timing and task mix.
Nov 25, 2019 11:21:11 #
Nov 25, 2019 13:08:27 #
rck281
Loc: Overland Park, KS
Why would anyone disable hyperthreading? One pays extra for a CPU that has that feature.
TURN IT ON AND LEAVE IT ON!
If you need more performance, try overclocking.
TURN IT ON AND LEAVE IT ON!
If you need more performance, try overclocking.
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