FX-8320 Temperatures and Vcore

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Delgon

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May 16, 2013
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Hello.
I have some questions becouse I think i have some problems with my cpu and I dont know why :/
So u have FX-8320. The CPU (socket) temp is under 66C becouse when it is higher the core voltage turn to 0,9V and then automatically multi to 7x (1400MHz) so my temp looks like ^^^^^^^^. I have this temp when stressing CPU and my core temp is 45-50
when im stressing only 50% of cpu tems are 63 stable and stable volt and core temps 40-45.

So is these temp ok? i mean the socket one. Is it possible to somehow unlock this cpu voltage ?
 
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sedativechunk

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Apr 24, 2012
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I'm sorry your question/message doesn't make sense (I'm guessing you don't speak English?). But the AMD FX-8320 as well as most of the newer ones (including the 8350 which I own myself) are very power hungry, very HOT cpu's when overclocked.

I seen something about 66C in your post - that is absolutely getting in the danger zone. If you're hitting that temperature you need to take a step back. Otherwise you're going to cook your CPU and get random shutdowns. Furthermore I read something about stressing "50% of the CPU and temps are 63C". How exactly are you stressing only half of the CPU?? I've never heard of that.

Here is what I recommend:
1) Are you using an aftermarket cooler? If you are using the stock cooler might I advise you to just stop now as the stock cooler is not sufficient for overclocking in the least bit
2) If you are using an aftermarket cooler, why don't you shoot for about 4Ghz? Turn off core performance boost, increase the multiplier up to where you are just around 4,000Mhz, increase your voltage to about 1.45V core.
3) Do't fry your CPU - seriously these FX chips are monsters for heat/power consumption, if you can't get this chip stable get an improved cooler or leave it alone

I personally own the FX-8350. Mine has a 250x bus multiplier, 20x CPU multiplier, 1.5Vcore, running at 5Ghz steady. To achieve a steady 5Ghz, I have a custom water cooling loop with a water block on the MOSFETs on my motherboard. Idle its cool and quiet, but during full performance it takes four fans running max with one being a 2,000RPM antec or this thing overheats very quickly.
 
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Delgon

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May 16, 2013
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yee. first of all sorry for my english :)
1. yes. i'm using aftermarket cooling - scythe mugen 2 with arctic silver 5 thermal paste.
2. Honestly i'm at 4GHz (3996 exactly xd 222 bus, 18 multipler and 1,375V. (stable)).
3. I know i should keep it cool but cores are 45C (MAX 50C). hmmm. i dont know ecactly about my temperatures. HWMonitor is showing me only package which temp is the same as cores in AIDA64. Temps looks like this in iddle (http://img203.imageshack.us/img203/5388/tempsw.png)
When i said 50% stress :p i meant stress just 4 threads in prime95 (it's 50% of cpu).
I want to know something about these voltages too. there is PS with my temperatures and voltages with 100% stress in prime95 aprox. 15min http://img845.imageshack.us/img845/8393/cpuandvcore.png) CPU temp is 57-61, cores 21-48, vcore 0,944-1,344.
When im stressing 50% its not jumping like this and is stable.
 
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chrisafp07

chrisafp07

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The FX line max core temp is 62c recommended (that is the the package or core temp you are reading from software). The 66c socket temp is fine. Your socket temps will likely be 10-15c higher than your core temps, this is fine and normal for our FX line of cpus. Your cooling looks good. Try using HWinfo64 instead of HWmonitor.
 
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sedativechunk

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Hey Chrisafp, thanks for sharing that HWinfo64. Honestly I've never heard of that one and I just checked it out, it's very nice! I've been iffy about hwmonitor lately, I don't think it gives the best readings on my current build.

And yea I think the temps also look good on there as well.
 
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Delgon

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May 16, 2013
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Thank you for your help with temperatures :) do you have any idea about droping Vcore too? This is very anoying. Maybe its something in my BIOS that i have turn on but should have off. Can you send me some settings in your bios?
 
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chrisafp07

chrisafp07

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No problem. I personally love HWinfo64 and only found it recently myself. I like that it gives you minimum/average/maximum for any reading off a sensor like temps and voltages. Comes in very handy also to find bottlenecks in your system because you can watch RAM, GPU, and CPU utilization percentages as well.

As for the original poster. Well currently I run my FX8350 @4.5ghz with 1.375 Vcore. I have clocked mine up to 5ghz and stable but I don't like running a 24/7 overclock with so much voltage. My bios settings are as follows: 200mhz FSB, multiplier is 22.5, 1.375 Vcore with LLC disabled. Northbridge voltage and speed are set to auto. All other voltages are at auto. All power saving features are disabled. Turbo mode disabled. HT link auto. Also, are you concerned with your Vcore dropping on its own, or did you want to drop it manually? I couldn't understand the question sorry. Hopefully this helps, if not post back and I'll see if I can help in any other way.

 
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Delgon

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May 16, 2013
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Sorry again for my english xD. Vcore is dropping automatically :/ i want it to stay at this 1,4V. Its dropping always when socket temp. is about 65-70C. But core temp are still below 55C. Now when i have this cpu i can see that probably games will not recuire this amount of power xd metro last light with 30-35% usage cpu and 100 gpu (gtx 670) at max 1920x1200. So about this voltage i just should turn off all power save settings in bios right? Is my english really that terrible? :p
 
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chrisafp07

chrisafp07

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No your english really isn't bad at all, pretty good actually. Just couldnt understand a few things ;p

Like you asked, turning off all power saving features, and disabling PCI and CPU spread spectrum as well should keep your voltage stable (as long as your current cpu voltage is set to manual and not auto. Your temps looks fine though.
 
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Delgon

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ehhh. i dont know what to do :/ i turned off all energy saving options, even llc and thermal throttle is disable. when my socket temp is 67 my vcore still drop to 0.9V :/ i can upload photos of my settings in BIOS if it will help anyhow. this vcore is anoying.
 
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chrisafp07

chrisafp07

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Yes please screenshots may help.
 
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Delgon

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some photos i have the latest verison of BIOS :) but i think it unfortunatelly might be becouse of my motherboard :/ ASRock Extreme4 970. I know it's average Mobo. Dont look at my Vcore in bios :p now i'm just trying to find my cpu stable with temp below 68 socket. One more thing. When i'm stressing with (AIDA64 or use Folding@home on full or just doing stability test with AMD OverDrive) i get my CPU (socket) temp X but when i'm stressing with prime95 my temp is aproximatelly X+ 5C can u tell me why ?
http://img824.imageshack.us/img824/3620/img1086k.jpg
http://img13.imageshack.us/img13/3287/img1087io.jpg
http://img545.imageshack.us/img545/8725/img1088h.jpg
http://img534.imageshack.us/img534/8829/img1089bo.jpg
http://img546.imageshack.us/img546/8725/img1090cq.jpg
http://img38.imageshack.us/img38/6735/img1093g.JPG
one more thing (again xD). Here (http://www.overclock.net/t/1325084/voltage-inquisition-and-degradation-regarding-fx-8320-vishera-piledriver) user "flyin15sec" uploaded photo of his Core Temp with Tj. Max 90C but in mine Core Temp Tj. Max is 70C (http://img837.imageshack.us/img837/1716/coretempa.png). Do you know why ? or how can i change my Tj max or something?
 
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chrisafp07

chrisafp07

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Well I will say, I should have asked for your motherboard first. I had issues with my 8350 in a 970g board from Gigabyte because the cpu was not receiving enough power. I couldn't overclock the cpu at all. I upgraded to a 990FX board and had no issues whatsoever so to be honest I think that is most likely your problem. If you order a 990FX board and it doesn't fix the problem you can always return it (990fx boards have more power phases for power hungry cpus like ours). as far as TJ Max, it really depends on what the software program thinks is the actually TJ max for your cpu. Just make sure you aren't exceeding 62c for long periods while stress testing and you should be fine. I'm not sure the exact temperature at which the pc will shutdown to protect the cpu for the FX line, I'm assuming over 80c.

Also, regarding your question referring to the different temps you are seeing in Aida and Prime. Are you actually seeing the letter x as a variable or just using it as a variable for example here? Are you just saying Prime temps when stress testing are 5c higher?
 
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