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Overclocking FX-8300 Review of Results

post #1 of 19
Thread Starter 
Hi All,

I'm hoping you will be able to help me review these results on my OC of the FX-8300. I just wanted a modest overclock, not even to the turbo speeds so i have been shooting for 4.0ghz.

MOBO: ASUS M5A99FX Pro R2.0
Cooler: Coolermaster hyper 212 evo

Multipler: 20
FSB: 200 mhz

Other frequencies have been set at default 2200 and 2600.

Currently running CPU Voltage at: 1.25625 and NB at 1.187 which was default.

DRAM Voltage at 1.55.

I have the CPU LLC and NB LLC at Ultra High and High respectively.

I have also disabled all of the power saving settings mentioned in many of the guides.

My concern is the socket temp, this was s 30 minute prime95 test. The max socket temp shows 71C but it was around 70C for hte last 10-15 minutes of the test. The core temps seem reasonable at 55C.

I did step voltage down to 1.25000 and failed on core 5 after 20 minutes or so.

any help would be greatly appreciated.


post #2 of 19
A socket fan and active cooling on your VRM heat sink are highly recommended. A socket fan is just a fan located on the back side of your motherboard that moves air actively over the socket and refreshes the air in that space which otherwise can get very hot when trapped. Many people will simply use the stock heatsink fan that came with their CPU if your case accommodates the spacing. I have actively done case mods in the past to actually blow fresh air on them by cutting holes in my back panel but that is extream. You can usually find very small fans at places like Radio Shack if your case has limited space between the back panel ad motherboard.


Warning: Spoiler! (Click to show)

As for your VRM heatsinks (the ones usually around the CPU socket) having lots of case fans is great but having active fans that blow and move air directly over these will work wonders. Most people don't understand that while case fans refresh the air in your case...unless they are actively moving air quickly across the heatsinks then you are getting sub optimal cooling from them. Double sided tape works wonders here for creative mounting of small fans.

I would also highly recommend downloading HWInfo as tool for monitoring. It is a more comprehensive tool and i found i liked it better than HWmonitor myself. Some feel its overkill, but give it a look if you have not.
Edited by gapottberg - 8/3/16 at 7:08am
post #3 of 19
Gapottberg covered it pretty well. But your overall temperatures are too high for those voltages and clock speeds. The 212 is generally good for maybe 4.5 ghz, so it looks like poor case air flow is trapping the hot air inside the case and making it run too hot.

How does it run with the side cover off? Cooler? What case are you using and what case fans?
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Junkyard Dog
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post #4 of 19
Thread Starter 
Thanks for the reply's everyone. This is my first PC build so i'm always up for suggestions. I'm using the nzxt s340. I have one Corsair AF120 QE as an exhaust and another as intake. I have the two additional nzxt 120's that came with the case that I could add as additional intake and exhaust. Initially I didn't want to in order keep it a bit more quiet but maybe I need it.

Could it potentially also be the way I installed the CPU Cooler? Idle temps on the socket are around 30-35C.

I never ran prime with the side panel off but I could certainly do that to see if it is merely case heat that is the issue.

I know this question is hard to answer but what do you suspect would be a reasonable socket temp at 4.0ghz? Low to mid 60's?
post #5 of 19
Sadly it is difficult to give you reasonable estimates without having similar hardware and even then its case by case. Generally speaking moat people will push their cores to around 60 and their socket to around 70. When they hit their limits they stop or invest in better cooling solutions. If you can cool it you can generally clock it higher. I highly suspecr your case does not have adequate ventilation if its failing at 15 min with those specs. Get more fans, get better fans, get a water cooling kit, do a case mod and put even more fans in there. Hell even put a room fan that blows on the case from the outside to move the hot air you are venting away so it doesnt get recycled. Cieling fan can do wonders here just to keep air moving.

Here is an easy and simple test you can try. Run your benchmark with the back panel off so you can see under you motherboard socket and run your bench test. Check your temps during the same 15 min run.

If they are lower then normal with the panel off you are traping air under that panel when its on and that air is getting hella hot.

Now run it again but this time sit behind it with a small fan blowing on the socket. You will be amazed.

Then its time to case mod.
Edited by gapottberg - 8/3/16 at 2:26pm
post #6 of 19
Thread Starter 
I got home and added another 120mm intake fan and dropped 6 degrees at the socket and core over a 30 min stress test. What do you think of these results? Still too high at full load? Would dropped LLC help since my voltages seem to be holding true as to what is entered into the bios?


post #7 of 19
Those are very usable temps. Still a bit high for you clocks imo but that may be due to LLC. Remember, your temps will not naturally approach the kindnof ones you will be pushing in sythetic stress testing. For daily use its probably fine.

However, remember that thesr tests are with zero GPU load im guessing. That can really be a game changer depending on your caed and its cooling solution. Make sure once you feel good with a clockspeed and pass a stress test to minitor daily use and gaming temps and voltages as well.
post #8 of 19
Your CPU is way too hot, but the socket is ok. Could you get HWINFO64 and install it? It is free. Here is what a Sabertooth with proper cooling looks like in HWINFO64. That is the lowest clocks I recorded on that board. For LLC I use "high".

.
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Junkyard Dog
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post #9 of 19
His numbers in HWmoniter make me think the lables are wrong or that he really needs to reseat his set up. I suspect the higher temo is actually the socket and the actual CPU core is the lower of the two.

It's one of the reasons i asked him to use HWinfo as well. Love that utility.
post #10 of 19
Quote:
Originally Posted by miklkit View Post

Your CPU is way too hot, but the socket is ok. Could you get HWINFO64 and install it? It is free. Here is what a Sabertooth with proper cooling looks like in HWINFO64. That is the lowest clocks I recorded on that board. For LLC I use "high".

.

I agree - Your temps under load are spiking, no doubt about it.
I will also say you really want at least 1.32v's ran with it, perhaps 1.35v's with some CPUs to ensure stability but it shoudn't need any more to run. ATM I"m running an 8300 at 4.0 with 1.35v's on air and it's doing just fine the way it is. I did have it at 4.5 with the same voltage but temps did go up a bit and I don't want to run my CPU cooling fans too high due to the noise they make (Scythe Susanoo - 4 fans on it) but it does great at their lowest speed if I run it where it is now.

Also be sure your RAM sticks are actually rated to run at 1.55v's, many sticks are rated to run at 1.65v's and undervolting them too much will contribute to problems. If anything, even if rated for 1.55v's they could run 1.60v's easily and not get hot, however staying with 1.55v's if rated for that voltage would be best.

You need to first off see if there isn't a way to get temps down some esp, under load. Your cooler should be good enough so look into things such as the amout of airflow you're getting into and out of the case, bear in mind all coolers within a case relies on air passing through the case or it will begin building heat inside. This same heated air is what your cooler is using regardless and it could turn into a vicious heating cycle if there is a problem with it.
Also remember you have 8 cores running under the little lid on the CPU, it's gonna run warm more or less no matter what you do.

I know, some folks may say temps are fine as is but there is nothing wrong with checking it out anyway, any improvements you could make will let the hardware last longer and might even let you go a little higher too.
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