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RTX5080 with a 8700K

mikemod

mikemod

mikemod

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Joined
29 Mar 2003
Posts
103
Location
Norn Ireland
So when they were available recently, I ended up buying a 5080FE upgrading from my 6 year old 2080

My intention was to upgrade everything including processor and PSU but haven't decided which ones yet so thought I would just run with it on my old rig for a while.

So I plugged the 5080 into my old motherboard, Gigagbyte Z390 Aorus Master, Intel 8700K @ 4.5GHz and using the original PSU, Superflower 850 (11 years old !!) but it came with three PCIE cables so connected up to the provided adapter.

Currently my monitor is 3440x1440@120Hz

So all games are running perfectly with everything set to max, processor doesn't seem to get over 60% with GPU 90/95%

Is there any point in spending £500+ on a new Motherboard/CPU/DDR5 , Am I going to see any real improvement ?
 
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Yes, your 1% lows should dramatically increase even at 1440p UW especially in CPU intensive games. The 8700k is an old girl now. You're seeing a CPU bottleneck as your GPU perf isn't at 99%.
 
Try some games with Ray tracing enabled.
Some of the ray tracing calculations are done on CPU and you will be heavily CPU bottlenecked in those games with RT enabled.
Even my 3080 was underutilized when I would enable RT with a 10900k, upgrading to a 7800x3d fixed this.
 
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If you're happy OP then you're happy, no need to upgrade. Your cpu will bottlenecking to some extent which will be more apparent at lower resolutions.
 
Iv'e been running F1 25 with Ray Tracing and Path Tracing on, Ultra settings and it still runs with 100FPS+ , so maybe just leave it until there are some deals on the the AMD 3D processors.

I was using MSI Afterburner with RivaTuner Statistics to monitor, the 0.1% value doesn't seem to change, CPU never got above 65%, GPU over 90%
 
Shawreyboy said:
Yes, your 1% lows should dramatically increase even at 1440p UW especially in CPU intensive games. The 8700k is an old girl now. You're seeing a CPU bottleneck as your GPU perf isn't at 99%.
Click to expand...

I remember deliding the 8700K when I got it thinking it wouldn't last much after that and here we are 6 years later :cry:
 
So just did another run with F1 25 and RTS and this is the sort of result I'm seeing

PXL-20250605-200105035.jpg


The readings on the D3D12 line are 0.1%low, 1%low, average, current FPS

Are the lows showing the problem being CPU bound
 
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mikemod said:
Is there any point in spending £500+ on a new Motherboard/CPU/DDR5 , Am I going to see any real improvement ?
Click to expand...
Just because the Internets says you need an upgrade doesn't mean you need an upgrade. Do whatever you want to do. Are you leaving performance on the table? Yes (depending on the game/settings/resolution).

This video may be of interest.
 
It will definitely be a limiting factor, but to what degree in that game I don't know. Really depends on whether you're happy with the performance or not. If the lows aren't frequent and the 90 average is providing a good enough experience.

It could be worse, my friend just bought a 5070 Ti to pair with...a 5820K. He saw almost no improvement in Star Citizen (which is what he mostly plays), bit at least maxing the graphics settings didn't degrade performance! He's obviously planning to do the rest of the system eventually, but it was quite funny seeing the before/after benches. 30% GPU utilisation! In fairness, on my rog I still only see about 50% GPU utilisation as the bottleneck is all server side.
 
Yea, I think I was just trying to kid myself..

Just did some more runs in F1 25 and monitoring all cores separately can see some hitting over 90% @ 3440x1440 PT and RT on.

So the next question is, as it's been 6 years since my last upgrade should I go all in on a 9800X3D or would the 7800X3D be enough?
 
mikemod said:
So when they were available recently, I ended up buying a 5080FE upgrading from my 6 year old 2080

My intention was to upgrade everything including processor and PSU but haven't decided which ones yet so thought I would just run with it on my old rig for a while.

So I plugged the 5080 into my old motherboard, Gigagbyte Z390 Aorus Master, Intel 8700K @ 4.5GHz and using the original PSU, Superflower 850 (11 years old !!) but it came with three PCIE cables so connected up to the provided adapter.

Currently my monitor is 3440x1440@120Hz

So all games are running perfectly with everything set to max, processor doesn't seem to get over 60% with GPU 90/95%

Is there any point in spending £500+ on a new Motherboard/CPU/DDR5 , Am I going to see any real improvement ?
Click to expand...

Simple test, view some 5080E benchmarks with modern CPU's then compare to what you get.
 
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Shawreyboy said:
My vote would be the 9800x3d. Prices are close enough now to make the 9800 a more attractive cpu.

https://www.overclockers.co.uk/ocuk...9800x3d-tuf-b650-32gb-ddr5-pro-amd-05329.html decent bundle here, no need to have to manually update bios as OcUK would do this.

EDIT. It is slightly cheaper if you buy the bits separately but you would have to flash the bios yourself.
Click to expand...
I wonder if the 7800x3d is due a price cut in the UK, last week I purchased a 7800x3d in the EU for €370(£311) and it is still available at that price.
 
I've just gone with the 9800x3d.
Are Asrock motherboards safe enough to use again or have the solutions with the new bios not been verified yet?
 
mikemod said:
I've just gone with the 9800x3d.
Are Asrock motherboards safe enough to use again or have the solutions with the new bios not been verified yet?
Click to expand...

Steve at GN wasn't convinced they were resolved based on his vid from Computex here but, you're always likely to hear of the bad stuff on the Internet less of the good stuff. Atleast Asrock committed to paying warranty shipment both ways.

Ultimately, it's down to what you're comfortable with. My view of it would be, if there was genuine concern still, OcUK would likely have pulled the boards.
 
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