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Question Zen 4 builders thread

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The MSI Gaming Trio 4090 you see in my photo is pretty solid. Manufacturers have figured out that they can add bracing on the rear of the card on the IO side where it pushes against the case. The card may look slanted in the photo, but it's straight. The plastic shroud design flares out towards the front of the case making it appear sloped.

This 4090 is a bit larger compared to the EVGA 3090Ti FTW3 Ultra I had prior. 337mm vs 300mm length and 140mm vs 137mm width.
 
After -30 on the voltage and 105W limit being stable on my 7700X (giving me the performance of stock at 135W+ based on reviews), I'm gonna get greedier and try -35 and 100W which also gives stock performance.

Cinebench and Furmark CPU tester have been stable so far. Anything else free and easy that's good for testing undervolts?
 
Zen 4, at least the 7950x is $600 on ebay from antonline. I could not resist, and have 7950x number 3 incoming next week. This build is for the computer I am typing on. I need something a little faster for my main machine. I will reuse the 240 AIO, the case and PSU and all drives. It will not be as fast as my other 2, but faster than the 5950x it will replace. I will set it to CO -25 like the others, but down to 80c on the max temp. The other 2 are 85 and 90.
 
crisium said:
After -30 on the voltage and 105W limit being stable on my 7700X (giving me the performance of stock at 135W+ based on reviews), I'm gonna get greedier and try -35 and 100W which also gives stock performance.

Cinebench and Furmark CPU tester have been stable so far. Anything else free and easy that's good for testing undervolts?
Click to expand...

Corecycler with ycruncher is the way. My 7900X and 7950X were also stable at -30, haven’t tried lower yet.
 
Markfw said:
Zen 4, at least the 7950x is $600 on ebay from antonline. I could not resist, and have 7950x number 3 incoming next week. This build is for the computer I am typing on. I need something a little faster for my main machine. I will reuse the 240 AIO, the case and PSU and all drives. It will not be as fast as my other 2, but faster than the 5950x it will replace. I will set it to CO -25 like the others, but down to 80c on the max temp. The other 2 are 85 and 90.
Click to expand...
I've seen antononline on ebay before but not sure if they're reputable? I buy a lot of crap from ebay so i have not got a leg to stand on here. I can make a long drive out to a store that can give me a deal if one exists. The only confusion I have with am5 is ram speed and motherboard choices. it's a sensory overload given the numerous options. it used to be there were three or four main mobos you wanted with the pricier and feature rich stuff separate for the big sharks who wanted to waste their money or so it seemed. and before that the frantic 10x checking of your connections and jumpers praying you don't fry your very expensive new hardware. Of course how could one forget those days where ribbon cables were cheap long and plentiful so you'd knock back a few drinks and wrap your head in a few of those cables with some peeky space for your eyes and pretend you were a mummy a tech mummy back from the dead, double points if it was on or near halloween otherwise you were considered a massive wrong'un by your neighbors, outside of computers being a niche hobby at the time.
 
crisium said:
After -30 on the voltage and 105W limit being stable on my 7700X (giving me the performance of stock at 135W+ based on reviews), I'm gonna get greedier and try -35 and 100W which also gives stock performance.

Cinebench and Furmark CPU tester have been stable so far. Anything else free and easy that's good for testing undervolts?
Click to expand...
I thought -30 was as far as you could go. What is the limit?
 
A/// said:
I've seen antononline on ebay before but not sure if they're reputable? I buy a lot of crap from ebay so i have not got a leg to stand on here. I can make a long drive out to a store that can give me a deal if one exists. The only confusion I have with am5 is ram speed and motherboard choices. it's a sensory overload given the numerous options. it used to be there were three or four main mobos you wanted with the pricier and feature rich stuff separate for the big sharks who wanted to waste their money or so it seemed. and before that the frantic 10x checking of your connections and jumpers praying you don't fry your very expensive new hardware. Of course how could one forget those days where ribbon cables were cheap long and plentiful so you'd knock back a few drinks and wrap your head in a few of those cables with some peeky space for your eyes and pretend you were a mummy a tech mummy back from the dead, double points if it was on or near halloween otherwise you were considered a massive wrong'un by your neighbors, outside of computers being a niche hobby at the time.
Click to expand...
I have bought quite a bit from them.
 
I'm about to pick up another open box 7950X from Microcenter for $630, along with the free 32GB DDR5-6000 🙄 The antonline deal is great but more free RAM is pretty sweet. And the new deal is CL30 so probably Hynix rather than peasant Samsung.
 
In2Photos said:
I thought -30 was as far as you could go. What is the limit?
Click to expand...

Oh I don't know what the limit is. I think I'm actually getting it because my frequency is a tad higher in Cinebench then when I did 100W with -30. Or maybe I'm seeing what I want to see. Either way, who knows if it is stable yet.
 
A/// said:
Of course how could one forget those days where ribbon cables were cheap long and plentiful so you'd knock back a few drinks and wrap your head in a few of those cables with some peeky space for your eyes and pretend you were a mummy a tech mummy back from the dead, double points if it was on or near halloween otherwise you were considered a massive wrong'un by your neighbors, outside of computers being a niche hobby at the time.
Click to expand...
Yep. You are drunk alright.

😀
 
repoman0 said:
I'm about to pick up another open box 7950X from Microcenter for $630, along with the free 32GB DDR5-6000 🙄 The antonline deal is great but more free RAM is pretty sweet. And the new deal is CL30 so probably Hynix rather than peasant Samsung.
Click to expand...
I feel like a peasant for not being near a Microcenter (first I would need to migrate to US, though).
 
CL30 now at Microcenter? I was 2 weeks too early. Oh well won't make a huge difference.
 
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In2Photos said:
I thought -30 was as far as you could go. What is the limit?
Click to expand...
Theoretical minimum PBO CO limit with Zen4 is -200 i believe.(can basically reduce CO unlimited until system don't boot anymore)
With Zen3 its -30.

On my 7950x with one good CCD and one bad i'm running these values:
1668201143747.png

Which gives me these scores with 24/7 settings
1668201165505.png

Its pretty much CCD0 that's carrying the benchmark scores.. my CCD1 is so bad that i even need a positive CO value on core13.. Clockspeeds look like this when running Cinebench R23
CCD0 = ~5456mhz
CCD1 = ~5181mhz
1668201263067.png
 
crisium said:
How do you use Ryzen Master to test for bad (preferred?) cores?
Click to expand...
I'm using CoreCycler to manually find my PBO CO values.. Have been working on my current set for ~5 days now.

github.com

GitHub - sp00n/CoreCycler: Script to test single core stability, e.g. for PBO & Curve Optimizer on AMD Ryzen or overclocking/undervolting on Intel processors

Script to test single core stability, e.g. for PBO & Curve Optimizer on AMD Ryzen or overclocking/undervolting on Intel processors - sp00n/CoreCycler
github.com github.com

Newest version can be found here:
github.com

Release v0.9.2.0 · sp00n/CoreCycler

Updated to Prime95 30.8b17 Updated to y-Cruncher 0.7.10 Build 9513 Added BoostTester and PBO2 Tuner in the /tools directory, and also added a readme.txt there that describes what the various tools ...
github.com github.com
 
I did one iteration of Core cycler without any issues earlier today actually cause repoman0 mentioned it. I don't know what you mean by manually, but I'll keep running it and hopefully it keeps passing.
 
Still waiting for some sample builds. The furthest I got was case choices.

igor_kavinski said:
What made you start?

Hope it's not to drown some sorrow(s) coz your liver will drown too.
Click to expand...
Oh no, I never liked the taste of the hard stuff because as a child I'd sneak finger licks from the adults glasses. This was long before the internet was remotely available and dial up may have well been a foreign idea to most. We kids got our jollies in other ways like that or lighting up someone's mailbox with cheap fireworks LOL
 
One iteration of Corecycler/ycruncher complete at -40 CO on my 7950X. Hadn't really even considered trying that low until recently since Zen 3 maxed out at -30. Lots of room in the v/f curve on this initial batch of chips it seems. I don't have any PBO boost clock increase enabled though, it's hitting 5725 MHz single core which is good enough for me.

My early batch 5900X couldn't even do -10 ...

edit: -40 locked up eventually. Too lazy to figure out what core it was so -30 it is.
 
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