Upgraded CPU and now have less performance, what am i doing wrong?

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Hey yall, i just upgraded from a Xeon Gold 6230 to a Xeon 8280 ***

Got it out of a old Server we decommissioned at for $300 CAD what seemed reasonable

but for some reason after upgrading the CPU ive noticed my FPS in video upscaling/playback has dropped although should be higher/the same shouldnt it, as it has a higher clock speed and more cores.

but when using TopazLabs im usually getting about 4.3FPS while upscaling 480 → 1080 and 2.2FPS 4K → 8K but now with the new CPU its pretty much dropped to 1.96FPS, doesnt seem huge but when working on a huge 4K Project im doing for a client its taking a huge toal on the total ETA for this project to be finished.

Ive cleared BIOS and disabled all of the OC/Force Turbo settings to make sure nothing is invalid, and got the RAM set at 2933 on all 12 sticks so 32x12GB at 2933 but cant seem to find the issue, do you guys think this could be a windows issue and if so should i reinstall maybe help things?

I do have the money atm for a Xeon 3rd gen system but would rather not do so as 2nd gen Xeon was a huge upgrade other my TR 2970WX and wouldnt like to decommission another machine and add to e-waste.

As you can tell im not a huge server parts / hardware in general person, i just try build a system for my work and let it do its thing, but this is really bugging me and having buyers remorse that this $300 purchase was maybe not worth it and should of stuck to my 6230.

If anyone has any ideas id be more than intrested to listen and see if i can get it working at fullspeed/maybe a little more again! and sorry for the long/spaced out post, not too sure how formatting works still on these kind of fourms

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What are your thermals like and can you capture socket power?

You might be power or heat limited.

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Power is my first guess. A power limit that wasn’t throttling the old 125W Gold but is throttling the new 205W Platinum.

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make sure those VRMs are’t getting toasty

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My thermals seem to be about 81c max under openhwmonitor and have a direct 120mm 2100rpm fan blowing on the VRMs of the ASUS Z11PA-U12s board, power shouldn’t be an issue either as I’m using a Corsair RM1000x psu

Although just looked it up this board seems to only really support 165w CPUs on the official list, but has more power options in the bios to allow higher TDP so I guess could be something to do with that…

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doesnt support your cpu.
Xeon Platinum 8276M (2.2G, 165W, L3:38.5M, 28C, rev.B1,HT) is the last in the series the board supports.

after that it moves on to the Xeon Silver 4108 (1.8G,85W,L3:11M,8C,rev.U0,HT)

your cpu would sit between these two if it was supported.
and its for the reason you say… to high tdp.

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You’ve replaced a 125w CPU with a 200w CPU. They both turboboost to about 4GHz but I bet the new chip can’t do it. Your new chip has a higher idle speed and more cores so it must be that it’s not boosting.

It’s either struggling to suck enough power out of your motherboard or it’s actually getting too hot. They are designed to back off if they either can’t draw the power from the board or get too hot.

The problem won’t be the RAM because you have so many sticks you have loads of bandwidth. Assuming they are all plugged in and working OK.

I would check your CPU and core temperatures. Have you used decent cooling paste like MX4 or better? Were the surfaces nice and clean before you applied it? Is the cooler on straight?

I assume you’re using a decent PSU. Are all the CPU 12v sockets plugged into the PSU? Computers will run OK with fewer connected but the CPU may not be able to boost as high. Low end motherboards have a 4 pin, better ones have an 8 pin and super duper ones have 3x 8 pin. If you can plug them all it it’s better. They are not the same as the cables that connect your GPU.

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Damn… i guess then either i have to deal with the current issues im facing or perhaps buy a new board? i may see what i scrounge off of local auction sites, but now that im already $300 deep i guess i may aswell consider time for icelake.

I should of checked i guess but i kinda just thought LGA3647 meant anything could work and didnt bother reading… I mean the System boots and works “fine” but gets lower perf than my 20 core.

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I took a look at the board and there’s only one 4+4 EPS connector, which should technically be good for up to 235W. However, in my experience, most boards that support high TDP processors will have a 4+4 and a 4 or two 4+4 connectors.

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Welp after no sleep finally figured my issues, got the latest BIOS and enabled the Overclock/ turn off power limits and it’s fixed most of the issues and getting a little better performance what’s nice, although going to look either for a cheap 3647 board or if that’s not an option just sell this box and move over to something like Xeon Icelake / sapphire rapids if possible in the future

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