Optimus X

[kencri]

Just ordered an Optimus X from pc specialist which I plan to use for processing astronomy images in Pixinsight.

I went for the Samsung m.2 1tb ssd and 32gb ram.

The graphics card isn’t important to me as I don’t play games but it’s nice to have in case the pixinsight developers try to use the cores of the GPU in the future.

Any thoughts ? I’m hoping this will do me for some time

 

[ubuysa]

What CPU?

 

[kencri]

What CPU?

It’s the i7 9750. One question I have is that I’ve chosen 32gb 2666mhz ram but is that going to be much different to the 2133mhz ram ?

 

[kencri]

Got an email on Tuesday saying my laptop is in testing ! This is exciting, can’t wait to test it it on the pixinsight benchmark !

 

[Pokkai]

Nice, when you receive the machine see if you have the option to OC the RAM to 3000Mhz, I'm not sure if that BIOS can do it off the shelf, but processing images can use every buff it can get, and you want to ring every last ounce of value from that sponge!

Enjoy.

 

[kencri]

My laptop arrived on Friday. Looks a real quality machine, well built and packaged from pc specialist! I’d definitely buy again!

I ran the pixinsight benchmark a few times and getting great results . One question though-
When I run the benchmark for the first time after switching on I get 1500mb/s for the ssd and a low rating for the cpu performance 6600. Then as the cpu presumably warms up the performance increases to beyond 11000 but the ssd slowly looses its speed down to 800mb/s.

Is it likely the heat affecting this ?

 

[Scott]

y. Looks a real quality machine, well built and packaged from pc specialist! I’d definitely buy again!

I ran the pixinsight benchmark a few times and getting great results . One question though-
When I run the benchmark for the first time after switching on I get 1500mb/s for the ssd and a low rating for the cpu performance 6600. Then as the cpu presumably warms up the performance increases to beyond 11000 but the ssd slowly looses its speed down to 800mb/s.

800mb/s is rather good

1500mb/s will be the peak. This will come down as the process continues. 800mb/s is still insane though so be happy with that.

 

[kencri]

800mb/s is rather good

1500mb/s will be the peak. This will come down as the process continues. 800mb/s is still insane though so be happy with that.

I’m definitely happy

Just thought it was a bit odd as I’m using the same Samsung 1tb m2 ssd as a friend and he consistently gets 1400mb/s +. Whereas my ssd speed goes slower the more the cpu is pushed.

 

[Oussebon]

Depends what the drive's doing but you will see drops in speed under sustained load

e.g. https://www.phoronix.com/scan.php?page=article&item=samsung-970evo-plus&num=3

This is the older 970 Evo (not Evo Plus) but same point probably applies:

Samsung 970 EVO 500 GB Review

The Samsung 970 EVO is the company's offering for users who want the blazing speeds of NVMe, but aren't willing to pay premium for the 970 Pro. Read speeds of the 970 EVO match the 970 Pro; writes are lower, but still very good at 1.7 GB/s.

www.techpowerup.com

It is possible for SSDs to thermal throttle, so you could check to rule that out if your mate gets different performance doing exactly the same thing, under the same test conditions.

 

[kencri]

Depends what the drive's doing but you will see drops in speed under sustained load

e.g. https://www.phoronix.com/scan.php?page=article&item=samsung-970evo-plus&num=3

This is the older 970 Evo (not Evo Plus) but same point probably applies:

Samsung 970 EVO 500 GB Review

The Samsung 970 EVO is the company's offering for users who want the blazing speeds of NVMe, but aren't willing to pay premium for the 970 Pro. Read speeds of the 970 EVO match the 970 Pro; writes are lower, but still very good at 1.7 GB/s.

www.techpowerup.com

It is possible for SSDs to thermal throttle, so you could check to rule that out if your mate gets different performance doing exactly the same thing, under the same test conditions.

Ok I may have a look. The tests were at exactly the same time and doing the same process - pixinsight benchmark test.

The picture are his tests on the benchmark with the ssd speed reasonably stable. On mine (don’t have a pic) my cpu increases but my ssd decreases