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post #3971 of 3979 (permalink) Old 09-11-2019, 04:34 AM
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@rluker5 I see you have Intel Optane 900p on your Maximus VII Hero.
Where do you have it inserted? 2nd CPU PCI-E slot, which steals 8 lanes from the GPU or do you have it in chipset PCI-E slot, the last one?

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post #3972 of 3979 (permalink) Old 09-11-2019, 07:01 AM
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@Groove2013
to enable the eDram on asus boards u have to enable all c-states,then do a winrar bench to see if it's enabled,u should get 15/16k score
this should be posted on the 1st page and regarding the tool to update the bios from windows asus.....5th get updater etc etc to make bios settings work.

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post #3973 of 3979 (permalink) Old 09-11-2019, 08:25 AM
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Quote: Originally Posted by Groove2013 View Post
@rluker5 I see you have Intel Optane 900p on your Maximus VII Hero.
Where do you have it inserted? 2nd CPU PCI-E slot, which steals 8 lanes from the GPU or do you have it in chipset PCI-E slot, the last one?
I keep it in the 2nd pcie slot. The performance loss to my 1080ti is within the margin of error, optane performs better per benches, and I can use my Sound BlasterX AE-5. If I use the chipset pcie lane, the x4 gobbles up all of the other pciex1 outlets.
When I upgrade my gpu I might use a Sound Blaster G6 I won in a drawing here on OCN, but it really can't make my headphones put out an opaque wall of bass like the AE-5 can. Maybe I'll grow out of that excessive bass phase by then.

Having the optane drive, a Samsung 970evo nvme on my laptop, and regular sata ssds on everything else, I'd recommend sticking with regular sata unless you find a small but noticeable improvement in hard drive performance very important. I really only notice it if I'm spam loading a game to see what doing different stuff does, and even then some games like Mass Effect A. precompile shaders when you reload which becomes the loading bottleneck. You really don't get anywhere near the bang for your buck that a gpu upgrade would bring.

But it is easy for me to switch pcie slots with the thing and run CDM (one way to tell I switched slots is the pcie lanes available to my gpu), so I did and here are the screenshots. Note my performance is augmented by disabling spectre and meltdown protections.
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post #3974 of 3979 (permalink) Old 09-11-2019, 08:39 AM
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Also, microcode makes a big difference in optane performance. And some difference in gaming performance. I did some testing on this a while back when I was using a Z97 Classified, that I have since given to my son in a build, and here's some screenshots from that.

The first shot is microcode FO3 with no spectre or meltdown protections, the second is ucode 17 without S,M protections, the third is ucode 1D without meltdown protections, and the fourth is ucode 1D with spectre protections disabled.
The difference in I/O performance is obvious, and I can see it in the smoothness of some games like the newer Tomb Raiders in particular.
I've found 3 basic groups of mirocodes in terms of performance: the FO1 and FO3 group, everything else before 1B group, and the 1B,1D and 1E group. Within these groups the microcodes' effects on performance is basically the same.

Compared to the big middle group, the FO1, FO3 group is a little smoother and faster in some games, and obviously I/O performance, but ram is about 5% lower bandwidth and the cpu performs measurably less compute. This may actually hurt performance in some games, I didn't test them all.
The 1B,1D and 1E group have same ram performance as middle, worse compute than the middle group, but better compute than the FO1, FO3 group. They are also more stutter prone in gaming. This is easily mostly mitigated by disabling spectre protections with inspectre.

I didn't see a big dropoff in smoothness with meltdown protections enabled and meltdown seems exploitable in real life, unlike spectre variants.

Switching microcodes is a pain though. Windows 10 version 1709 is the last version that will let me run FO3 without changing it on os start. W10 1803 will change my microcode from what the motherboard has to ucode 17. Which is fine since it is + or - the best one. W10 1809 and 1903 change the ucode to 1D or 1E depending on your updates.

Inserting the desired microcode into your mobos bios is much easier than maintaining your windows version. I used UEFI Bios Updater and Asus boards that do that usb bios flashback will instal the modified bios if you use the button push method. EVGA boards will install anything, they just don't care. But EVGA boards are inferior when it comes to Broadwell-c controls.

This spectre mitigation loss of performance seems inevitable to current intel chips and hits stuff like fast hard drives the worst.
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Last edited by rluker5; 09-11-2019 at 09:31 AM.
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post #3975 of 3979 (permalink) Old 09-11-2019, 09:23 AM
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I found my old compute comparison screenshots. Spectre mitigations were enabled for ucode 1D.

And I found a frametimes comparison that I ran back when ucode 1B came out. That one was the same as 1D though.

Ok, I'll stop spamming screenshots about microcodes now
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post #3976 of 3979 (permalink) Old 09-11-2019, 11:28 AM
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@rluker5 So both screenshots of your Hero are with spectre and meltdown disabled and the only difference is Optane being in CPU slot and in chipset slot, yes?

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Last edited by Groove2013; 09-11-2019 at 11:34 AM.
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post #3977 of 3979 (permalink) Old 09-11-2019, 12:13 PM
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Quote: Originally Posted by Groove2013 View Post
@rluker5 So both screenshots of your Hero are with spectre and meltdown disabled and the only difference is Optane being in CPU slot and in chipset slot, yes?

Yes, that is exactly right. I like to disable both for hard drive checks, but usually have meltdown protection enabled otherwise.

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post #3978 of 3979 (permalink) Old 09-11-2019, 12:21 PM
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@rluker5 then this is a significant performance loss, using chipset PCI-E. It's bottlenecking the Optane + higher latencies. Good to know.
I see your GPU is watercooled. Mine is Asus Strix 2.75 slots triple 90 mm fans.
Don't know if putting Optane in front of them will affect temps much.

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post #3979 of 3979 (permalink) Old 09-11-2019, 07:08 PM
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Quote: Originally Posted by Groove2013 View Post
@rluker5 then this is a significant performance loss, using chipset PCI-E. It's bottlenecking the Optane + higher latencies. Good to know.
I see your GPU is watercooled. Mine is Asus Strix 2.75 slots triple 90 mm fans.
Don't know if putting Optane in front of them will affect temps much.
What I would do is put the SSD in the first x16 slot and move the GPU into the second x16 slot that way it won't impede airflow. The second slot should still be PCI-E gen 3.

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