FX8350 Throttling

daz87uk

daz87uk

daz87uk

Associate
Joined
30 Nov 2008
Posts
930
Location
Newquay
Hi guys, I've just built a new system and having a little difficulty in basic overclock. The board is a MSI 990FXA Gaming, I coupled this with the FX8350, 390 MSI Gaming gpu and 8GB of ram.

I've disabled the usual cpu control settings c&q etc in bios slowly bumped frequency up but noticed the processor immediately required more voltage, after a couple of bumps it BSOD so I upped the CPU-NB voltage a couple of notches and sorted that. Anyway it has hit a stubbling block. 4.5GHZ I'm at 1.5v which does not seem right but its holding stable ish. prime is holding all the cores but the frequency and voltages are crashing. 1400mhz / 1volt. There is no vdroop control on this board and Im wondering if its the board that is cacking itself and not just a poor cpu. The cooler is H90 and the temps have not exceeded 48c

any suggestions cheers
 
I'm at 4.6ghz at stock vcore but I only achieved this due to setting everything manually in the bios.

I'm on the Asus rog board though so I'm not sure if that makes a difference.
 
6KIdJZsEWboVsDbQHc0VVZ_sJndGi2msAO4aOaCaQRNJQg3fu2bD63pKXqJIKkUlf30owglFGAQIi60sSf0I4CotiU7Cu1fVg4_HWdRbFlvRG8PIpPg7y_vz2I-WzfXJlCs1IrrPJIqRd_kqzZ1WvzJW9Iiqsh5V3cKDLzgcWetbbg52q9nt1GOg4kL93RUnkvKrn2b-8xAELdSbhOHpjFWHwquyrvfNaAapugdZcAstRQQQm9Sos1HJB6eyfRSZhGJZSznX-1PIcjJc_ZZPtc82Qt404Fx8HvJTvhUS8WEY_MNka5v_NPJtPGU_PINPVSbzcPTRKILAHpQYfnGIkwgC38tAqF-UcI-bBPhOdX3sjfUG4k6yo9XvFuhMlRA6i6WOxqr-ZzvB3CbAfF17UF4m7HZ_QoXesGO5fqaVaKDj7rHn1_1BleWmibmQfLdYf07_Lj00nIqz9QAhBHe_NLeyyOGZo1eYa1XdZzKQX9gDyI019NvSbqZpZv1x9G8mD5qzZ02NzSJecFJlqlebC6j9bUcE1_TSgpKHD1liXr4=w1227-h1124-no
 
I noticed this happens when TMPIN1 gets to 99c. which I think is VRM. So the board is infact cacking itself. Great!, My next thought would be is the board just crap, or is it faulty?
 
Its looks like you still got on a setting which lets it go down to 1.4ghz and tmpin1 is not the vrm, if you look at the fx overclocking thread on the last pages i posted some stuff on there and is there anyway you can return the board and maybe find a board with LLC to combat the vcore as there noway is hell you need 1.5volts for 4.5ghz
 
Thanks for your imput guys, It definitely throttling as soon as it hits 99c tpin1. The heatsink for VRM is red hot as well thats why I was under the impression it was the VRM reading but I will double check with the HWinfo? either way my friends ROG board is luke warm to touch so somthing is not right here :confused:. I have disabled all power saving and trotting settings in bios 2.
 
Had this issue. Was VRMS, fixed by pointing a fan towards it. You can also buy a after market VRM fan most times because of this issue.
 
harry5522 said:
Had this issue. Was VRMS, fixed by pointing a fan towards it. You can also buy a after market VRM fan most times because of this issue.
Click to expand...

I might have to go down this route... I found a setting called CPU Protection. I set this to disabled and now the VRM's do not trottle but hit 103c intel burn test :eek:. There are a few ripples but it never dropped bellow 100% and cores stayed at 4.5ghz. Voltage is still way to high for my liking. I will try again with this turned off to see if it effects cpu at lower voltages.
 
You would find more stability lowering your overclock really. 4.5 isnt needed at all on the 8350s you hardly see any notable difference 4.2 would be fine
 
Does the |MSI board have Load line calibration LLC settings in the bios? Many boards have a problem maintaining the set voltages and drop under load. That is why you are needing to raise the voltages to try and avoid throttling.

On my ASUS M5A99X rev 1. I was able to get 5GHz at 1.49-1.5V on an FX8350 with LLC set to ultra for benching and run 4.5GHz at 1,42V 24/7 again with ultra setting.

It would not do this without tweaking LLC.

My Crosshair V again runs the FX9590 at 1.41V using high settings in LLC.

I have not heard anything good about MSI and overclocking the FX8 CPU's. I suspect that it is the VRM temps causing this. Maybe try some active cooling in this area.

The images below were with my 8350 at various times since 2012.
RcHCfUC.jpg


RnJk3gD.jpg


VxvJmbz.png


nc19O8z.png
 
nkata said:
Does the |MSI board have Load line calibration LLC settings in the bios? Many boards have a problem maintaining the set voltages and drop under load. That is why you are needing to raise the voltages to try and avoid throttling.

On my ASUS M5A99X rev 1. I was able to get 5GHz at 1.49-1.5V on an FX8350 with LLC set to ultra for benching and run 4.5GHz at 1,42V 24/7 again with ultra setting.

It would not do this without tweaking LLC.

My Crosshair V again runs the FX9590 at 1.41V using high settings in LLC.

I have not heard anything good about MSI and overclocking the FX8 CPU's. I suspect that it is the VRM temps causing this. Maybe try some active cooling in this area.

The images below were with my 8350 at various times since 2012.
Click to expand...

Hi, I have disabled cpu protection. It does not trottle anymore and the voltage is stable 1.528 - 1.520. Its just the tempertures of the north and vrms that are getting 2hot. The board does not have LLC controll unfortunately. I had a Gigabyte 990fx UD5 before this which has LLC but that board was beyond crap so I'm going to asume the only decent board is now the asus... Its a bit pricey :/
 
daz87uk said:
Hi, I have disabled cpu protection. It does not trottle anymore and the voltage is stable 1.528 - 1.520. Its just the tempertures of the north and vrms that are getting 2hot. The board does not have LLC controll unfortunately. I had a Gigabyte 990fx UD5 before this which has LLC but that board was beyond crap so I'm going to asume the only decent board is now the asus... Its a bit pricey :/
Click to expand...

Why not go for a 970 chipset the ud3p, msi is the worst boards unless you get the gd80
 
fx63007850 said:
Why not go for a 970 chipset the ud3p, msi is the worst boards unless you get the gd80
Click to expand...

YOUR BASKET
1 x Asus M5A97 EVO R2.0 AMD 970 (Socket AM3+) DDR3 Motherboard £79.99
Total : £89.59 (includes shipping : £8.00 Ex.VAT).



This board will do also. It has 6 + 2 phase control and LLC in the bios. Not the prettiest, but unless you go ROG, ASUS tends to be very blue. I assume that you have one GPU. Crossfire is supported, but not as well as ROG. 16x + 4x. M5A99X Evo gives 8x and 8x in crossfire but that is the only real difference.
 
Last edited:
Asus are the best boards but if you need 1.5V vcore then you're probably going to struggle with heat regardless, the AMD FX CPU's absolute hammer the motherboard VRM's when overclocked.
 
You must log in or register to reply here.
Back
Top Bottom