Throttling issues with the AMD FX8320 when using a new GPU are common.
Throttling issues with the AMD FX8320 when using a new GPU are common.
So far what I can think of is that my new RX480 8GB might be the factor contributing to this issue. I'm currently overclocking my FX-8320 to 4.3ghz, with CPU LLC set to Ultra High and CPU/NB LLC at High, both at 130% capacity. I used a higher setting before but kept throttling even though I was running the profile I'd been using for some time (4.4ghz at 1.42v). The main change is the extra GPU. After lowering from 4.4 to 4.3 and reducing the voltage to 1.38, I still face throttling under load. Occasionally it drops to 1415MHz and then jumps back up to 4314Mhz. Once again it started later, but temperatures stay around 58, with a brief dip to 1400 at about 58.6. It seems the issue isn't from bus speed or cooling, but possibly related to my LLC or capability settings. I'm not sure if adjusting them would make a big difference for the CPU. I'm monitoring it now and seeing increased frequency. The readout in CPUZ is 1.440V, though I set it to 1.38 in BIOS. I'm wondering if this is connected to my LLC or capability and whether I should tweak those values. They're currently at (CPU) Ultra High, (CPU/NB) High, with 130% capacity.
I have good cooling—8 fans running—and the side of my rig is open, which helps airflow. No dust around, and I clean the system at least once a month.
What is the power supply's brand and model? The EVGA 600B appears to be a basic model, not ideal for overclocking.
Power supply make and model? If it's the EVGA 600B in your sig that's a low end unit not suitable for overclocking.
But that doesn't mean it's not a problem! I'm sorry, I realized that sounded snarky. It was because I was using my phone and Voice-to-Text while cycling OC profiles. SO! Here's the skinny. I think you're partly right. I think that my old OC profiles aren't going to work with this new GPU. I'm not coming even close to 600W, but the RX480 has a pretty significant power draw even idling.
I decreased my OC until I got a stable 4.2 clock. Still running stress tests, but have yet to exceed 63C under load. I know that's pushing it but I'm not concerned with the life of this CPU as I intend to replace it ASAP with the best 970-compatible AMD processor I can afford, and I will likely upgrade to water cooling then as well.
Speaking of which! You seen the new pre-filled EVGA GPUs? I mean G-double 0-D lawd! ;-)
I think I've found stability, I've had no throttling after a half hour at max temps. If this sounds about right to you, or if you you have any other tips, please hit me upside the head with them!
The 600B is the sole 600w EVGA power supply besides the even more budget-friendly white label model that meets 80 Plus certification. 80 Plus Bronze equals 600B, and 80 Plus denotes an even lower end. You also just included an RX 480.
The 600B is the only 600w EVGA power supply other than the even lower end white label unit that's only 80 Plus certified. 80 Plus Bronze = 600B. 80 Plus = even lower end.
You also just added an RX 480.
😉
Remember that time I was reading too fast and looked really
keep it PG please
stupid?
Let's ignore that. I promise I'm not an idiot, I just have to finish making dinner for 7 soon.
I have a Rosewill 650 modular, but it is AWFUL. Power isn't consistent at ALL, so I've been using this (I try to keep a back up of all components) for a while now. Well I'm idling at 33-38C now and had NO throttling so I think I got it. I'm going to assume the RX was what pushed it and just go about my day.
By the way, as you're an encyclopedia, any suggestions on what AMD chip/H20 Cooler I should get when I upgrade? Or should I even bother upgrading until I get a better mobo?
There are no worthwhile upgrades for the AMD FX series. Wait for Zen ( Ryzen - stupid name ) or move to Intel. The FX series is so bad a stock i3 6100 will outperform one overclocked to 5Ghz in gaming. The new AMD CPUs coming out soon look very good and might finally make AMD competitive with Intel again. They haven't been released or officially tested anywhere yet though.
Throttling to me means overheating. You said the overclock is no longer stable right? But temps are still fine ( 62C or under )?
If that's the case and it started when you added the RX 480 then the power supply is likely the problem. It could technically be supplying sufficient power but 'dirty' power with high ripple and out of spec or loose regulation.
What Rosewill? Some of them are excellent. Some aren't any better than the lower end EVGA units. Only a few brands like Seasonic are high quality no matter what model you are talking about.
There are no worthwhile upgrades for the AMD FX series. Wait for Zen ( Ryzen - stupid name ) or move to Intel. The FX series is so bad a stock i3 6100 will outperform one overclocked to 5Ghz in gaming. The new AMD CPUs coming out soon look very good and might finally make AMD competitive with Intel again. They haven't been released or officially tested anywhere yet though.
Throttling to me means overheating. You said the overclock is no longer stable right? But temps are still fine ( 62C or under )?
If that's the case and it started when you added the RX 480 then the power supply is likely the problem. It could technically be supplying sufficient power but 'dirty' power with high ripple and out of spec or loose regulation.
What Rosewill? Some of them are excellent. Some aren't any better than the lower end EVGA units. Only a few brands like Seasonic are high quality no matter what model you are talking about.
Okay then yeah I will have to wait quite some time LOL. If I'm going to have to get a whole new motherboard I'm not buying $100 one. I'll save up until I can order a higher-end one.
I'm thinking that it is dirty power, because decreasing the overclock and voltage fixed the problem. Under 100% lower stress tests it ran at 62.5 Peak. Most of my games are GPU intensive, like Titanfall 2, for example, is only running at about 48 even in large multiplayer games.
With the fan on the other side of my socket and one on my VRM, plus fresh thermal paste, I noticed a big boost. The socket is now 12 degrees cooler, the VRM 11 degrees, and the CPU 6 degrees.