Overclocking 8320 990FX Fatal1ty Killer

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jjphillips002

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Nov 20, 2013
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Hey, everyone. I have an 8320 and an ASRock 990FX Fata1lty Killer mobo, and I'm wanting to do some overclocking. With the UEFI, it seems like it'd be pretty easy to do, but this is my first time that I'm able to do some overclocking, so I need some help.

I'll give you some specs so you give me an idea of what numbers I should be using.

CPU: 8320
CPU Cooler: Hyper 212 EVO
Mobo: 990FX Fat Killer
----- It has 8+2 power phasing
RAM: 8GB PNY Optima 2x4GB DDR3 10666 1333Mhz

I have run this Hyper 212 EVO on some pretty long gaming sessions so far and I haven't seen the CPU go over 45C, if even that, so I'm confident it can handle some OC'ing based on that and what I've read.

Anyway, the bus freq, CPU Ratio, and nb freq kinda confuse me. I'm not sure which one to keep the same or change to increase the overall clock speed.

Also, I really only want 4GHz or maybe 4.2, and I've read that voltage shouldn't matter at that point, but if so, let me know.

Any help appreciated! Thanks
 
Solution
A
The only thing you need to adjust is the multiplier.
Leave everything alone for now.

Increase it, boot to windows, run Prime95 for 30 minutes. If it doesn't crash or get to hot, go back in and increase the multiplier

If it crashes, increase the CPU voltage by 0.05 (or just push + )
If it gets to hot, decrease the voltage.

The FSB increases the RAM speed as well, which means you either need good RAM or you need to decrease the CAS and other timings. It can be tricky, especially if you didn't purchase RAM that overclocks well.
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A

Alec Mowat

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Jan 8, 2014
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The only thing you need to adjust is the multiplier.
Leave everything alone for now.

Increase it, boot to windows, run Prime95 for 30 minutes. If it doesn't crash or get to hot, go back in and increase the multiplier

If it crashes, increase the CPU voltage by 0.05 (or just push + )
If it gets to hot, decrease the voltage.

The FSB increases the RAM speed as well, which means you either need good RAM or you need to decrease the CAS and other timings. It can be tricky, especially if you didn't purchase RAM that overclocks well.
 
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Solution
F

fruiten2

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Jun 25, 2013
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just get the multiplier to X42 click f10(save settings) restart your pc log in to windows and run a stress test to check stability
very simple just be careful.

Don't forget to choose a best solution :p
 
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J

jjphillips002

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Nov 20, 2013
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Haha, yeah, I knew 42 was a wrong multiplier to use. Interestingly, upon setup, the mobo is already OC'ing the 8320 at 4.0GHz. 200 x 20.

Thanks for your help everyone.

 
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jjphillips002

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Nov 20, 2013
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I got an 8320 and an ASRock 970 for 117 bucks, so I couldn't turn it down, but I wanted an 8350. But everyone says the 8320 can get up to 4.5-4.6 just as easy. Ended up buying the Killer for 8+2 phasing. Sometimes, my OC settings don't seem to want to stick upon reboot. The F-Stream is exactly the same as the stock ASRock tuner, just red and black. So far, I really like the combo. It's definitely an increase from the X4 630 I had in my HP =P

The EVO seems to keep it really cool. 10 Mins of Prime95 puts me at a max of 57C. Normally varies from 54-56. I have an MS-I Thermaltake Commander. One rear exhaust fan, the 212 horizontal and fan on top pulling in outside air from the top of the case, then a bottom and front one pulling in air. I'm thinking of putting another fan on the 212, but Idk how I'd configure it intake/exhaust wise. Also, after Prime is over, my CPU normally cools to 40C in less than 20 seconds. Lastly, the 212 is extremely quiet. if I turn my Gigabyte 770 fans on ~30%, I can't even hear the 212. The Antec fans are much louder as well. I'd go as far to say that the 212 will be the quietest fan in your case, against any fan even at full rpm.

As far as issues go, I haven't had many. Cabling was a bitch as always, and my PSU wires were almost too short. If you decide to turn a 212 horizontal/lateral, you might not be able to use 4 sticks of RAM.

Motherboard comes with 2 regular SATA cables and 2 right angle SATA cables, an SLI/XFire bridge, and a little badge for your case, and tooooonnnnnsss of screws for you.

 
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fkabs

fkabs

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Jan 7, 2014
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how much ghz you got with your fx 8320 now by the way?
and which voltage do you need?

I'm always interested in the results of other people with this cpu.

I got mine at 4,2 ghz with 1,350V now, which is pretty cool

after 3 hours of prime testing, I got 58° C on the socket (listed with 70° C max safe) and 48° C core temp (listed with 62° C max safe)
I will push it a little further when I have the time and don't need too big voltage jumps (I dont wanna go over 1,39 to 1,4 on air cooling)
 
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killakallies

killakallies

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Jan 22, 2014
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If it is your first time overclocking why not just use the built in CPU overdrive in the Catalyst Control Center? It will test the system until it becomes unstable and then let you choose the frequency that you find to be most stable and which your cooling solution can handle under load. Just note that the max temp for that CPU is 62 degrees c at the core, I was using the Hyper 212 with my 8120 but ended up switching to water cooling. Was able to boost it on water from a stock 3.1Ghz to 4.2Ghz with a max core temp running Prime95 for 2 hours at 54 degrees c stable as can be.

I
 
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jjphillips002

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Nov 20, 2013
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I have 4.0 at stock voltage. At 4.2, I have illegal sum out errors within 2 minutes on Prime95, but I didn't try any increase in voltage over 1.3v. I switched around my 212 to tunnel in air from the front and out a 2nd fan and out the chassis exhaust and dropped about 3-4 degrees. I MIGHT be able to push 4.2 at ~60c for a bit. I'm pretty happy with 4.0 though. Gaming on Skyrim with RealVision ENB and ELFX at 40-60fps, Battlefield 4 60+ on Ultra and my temps never run over 50c, sometimes over 45c. Gpu usually gets to 60c or something, but that 8320 and 212 stay below 50 easily.

Have you noticed any differences between 4.0 to 4.2 performance wise?
 
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jjphillips002

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Nov 20, 2013
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I honestly didn't know that was an option. And that's pretty awesome for an 8120
 
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killakallies

killakallies

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Jan 22, 2014
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Yep using Catalyst is a good way to get a performance boost safely. When I ran it on my 8120 my system became unstable and I had to reset it during the 4.5Ghz test point. When reboot was finished I was able to adjust the slider between the stock frequency and 4.4Ghz. I performed some heavy load testing and found that 4.2Ghz was the best option for my setup. Just ensure to be closely monitoring your vcore and CPU temps while it is running the utility, if it gets too high stop it so you don't get any thermal degradation on the CPU.
 
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Alec Mowat

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Jan 8, 2014
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I have an ASUS motherboard and I use the AI Suite II to run a lot of the testing, however I do the final changes in the BIOS instead of using the software. There are also a few settings you cannot change from the OS.
 
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