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Idiots guide to 3900x

The latest chipset drivers (yesterday) sort out all this mis-measured CPU temp malarkey. Mine runs at 30 degrees idle and 55 degrees during gaming. 65 degrees during and extended CPU stress test. This is with a 3800X
 
humbug said:
Christ on what cooler?

51c 15 minutes Real Bench Stress test.
Click to expand...

Evo 212. Doesn't go over 80 in games though.

Woodsta888 said:
The latest chipset drivers (yesterday) sort out all this mis-measured CPU temp malarkey. Mine runs at 30 degrees idle and 55 degrees during gaming. 65 degrees during and extended CPU stress test. This is with a 3800X
Click to expand...

I shall test this out tomorrow.
 
willhub said:
Too slow then, 3.8 as opposed to 4.3
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Nope?

The stock CPU settings leave the default and integrated PB2 enabled so it will boost as necessary.

PBO and XFR are limit removals but it doesn't do anything on a 3900x.

All core manaul voltage overclocks are benchmark conditions only as far as I'm concerned and have no place in 24/7 scenarios.
 
had my 3900x for a while and when i powered on my system with everything at auto temps were high but not too bad (high 70's - low 80's)(boosing on its own to around 4050 - 4100mhz), i'm running a custom 360mm 45mm thick pe rad for cpu.
I started to up the core clocks and reached 4.2ghz with smt enabled but boy oh boy temps were really bad topping out at 98 - 104 degrees on auto volts, i checked and at this point the cpu core voltage was 1.475v, i though hell no.
Headded back into the bios and dropped voltages down to 1.32v at auto core and headded back into windows, re ran cinebench r20 as before and temps were much better at around 68 - 74 drgrees, plus as the cpu was cooler it acutally boosted to 4.2ghz on all cores and smt enabled.
i finally setted on my max clock which is 4.35ghz (43.5 multiplier) all core plus smt enabled and have manually set core voltage to 1.2875v and temps are great topping out max around 68-70 degrees under cinebench r20 load, my max score at 4.35ghz was 7749 in r20 XD

almost forgot to mention i'm running a asus crosshair viii formula x570 mobo with bios version 0702, its the second bios relase from asus not the latest one
 
wookiee87 said:
had my 3900x for a while and when i powered on my system with everything at auto temps were high but not too bad (high 70's - low 80's)(boosing on its own to around 4050 - 4100mhz), i'm running a custom 360mm 45mm thick pe rad for cpu.
I started to up the core clocks and reached 4.2ghz with smt enabled but boy oh boy temps were really bad topping out at 98 - 104 degrees on auto volts, i checked and at this point the cpu core voltage was 1.475v, i though hell no.
Headded back into the bios and dropped voltages down to 1.32v at auto core and headded back into windows, re ran cinebench r20 as before and temps were much better at around 68 - 74 drgrees, plus as the cpu was cooler it acutally boosted to 4.2ghz on all cores and smt enabled.
i finally setted on my max clock which is 4.35ghz (43.5 multiplier) all core plus smt enabled and have manually set core voltage to 1.2875v and temps are great topping out max around 68-70 degrees under cinebench r20 load, my max score at 4.35ghz was 7749 in r20 XD

almost forgot to mention i'm running a asus crosshair viii formula x570 mobo with bios version 0702, its the second bios relase from asus not the latest one
Click to expand...

I to have a custom loop with 2x 360mm rads using a Corsair xc7 block and pump when I first setup my 3900x with the asus Crosshairs viii on the 702 bios I was getting temps hitting 100 degrees but all core boost of 4.15ghz I can get stable 4.3 at 1.28v volts can’t get any higher. But I was sitting at 85 degrees.

I turned my block 90degress and now my temps are in the high 70s never hitting 80 which I thought was strange seems my waterblock doesn’t cover the dies when seated the right way to the manual
 
TrM said:
I to have a custom loop with 2x 360mm rads using a Corsair xc7 block and pump when I first setup my 3900x with the asus Crosshairs viii on the 702 bios I was getting temps hitting 100 degrees but all core boost of 4.15ghz I can get stable 4.3 at 1.28v volts can’t get any higher. But I was sitting at 85 degrees.

I turned my block 90degress and now my temps are in the high 70s never hitting 80 which I thought was strange seems my waterblock doesn’t cover the dies when seated the right way to the manual
Click to expand...

you have to be careful with waterblck install as you say because the chiplets are off set current blocks are less than ideal on 3rd gen chips, you can minimise heat by rotating the block so the chiplets get some coverage but it wont bee 100%, the cpu's them selfs are a bit of a lottery some boost to 4.6ghz and some require next to no voltage to run, i may have gotten lucky with mine, but other will be different.
if owners are getting high temps look online to see how the chiplets sit when cpu is insalled and rotate your blocks to compinsate and see if temps drop, air cooling shouldn't matter as the cooling plate is quite big on most coolers, but you may need to upgrade if temps are still high

@TrM i also have 6 nocuta nf-a12 fans 3 per rad, thease fans are insane, low 1000rpm's move a tone of air and are super quite, maybe why my cpu is cool under load, remember the golden rule with 3rd gen ryzen the cooler it goes the more boost you get
 
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