Overclock FX-8320 on a Gigabyte 78LMT-usb3

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arcticwoolf

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Mar 8, 2016
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New to the wonderful world of OC. Not really very high ambitions, but looking to see if anyone has a stable 4.0ghz initial BIOS setup for the fx-8320 on a gigabyte 78LMT-usb3 MOBO. I've followed many threads, with the typical multiplier at 20x, and various settings enabled/disabled... Wow there are a lot of opinions out there on those, but honestly any combination I put won't let me reboot without a boot fail message. I'm looking for a few bios screen shots to see what I'm missing. Thanks
 
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Darkbreeze

Darkbreeze

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Your board is not fit for overclocking FX8 core processors, as are none of the boards seen here.

http://www.tomshardware.com/forum/id-2384030/motherboard-tier-list-am3-chipsets.html


That board is fine for overclocking FX 6 core or 4 core, but not 8 core. It simply does not have good enough thermals and power phase. You'll never get or keep it stable regardless of what somebody on another site said or apparently did. They may have had an exceptional chip, while you might not. Regardless, the board is not suitable. If you want to overclock that processor, get a recommended model, capable of overclocking FX8, from the 970 or 990fx chipset families.
 
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arcticwoolf

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Mar 8, 2016
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I ran it at 4.0ghz in AMD Overdrive just temporarily to see what kind of thermal margin I had and it was +25c and stable. But no idea about power phase. Even at 18.5x it won't reboot in the bios after a restart do you think that's the reason? Thanks for the advice, it was simply the board and chipset that came with the barebones I built. Money really isn't an issue... What chipset and MOBO would you recommend for a good gaming machine?
 
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Darkbreeze

Darkbreeze

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If you want to keep your current CPU and just need a good overclocking board, then I'd suggest any of these 990FX chipset boards:


Extreme6 (Termed as 990X chipset board on some sites)
Extreme9
Fatal1ty 990FX Professional
Crosshair V Formula-Z
Sabertooth 990FX R2.0
GA-99FXA-UD5
MSI GD80V2 (See NOTE1 below)
M5A99FX PRO R2.0
GA-99FXA-UD3


If you're talking about a full platform upgrade, I'd only really recommend going with an Intel Skylake configuration, using a Skylake i5 or i7 and a Z170 motherboard. Using a locked Skylake chip with an H110 board is also an option. That will get expensive though as a platform change to a K sku Skylake CPU and Z170 motherboard plus DDR4 will run about 450 to 500 bucks. I think it's well worth it though and I just moved from an 8320 to a 6700k myself.

 
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Outlander_04

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You can expect to run the chip at 8350 speeds because the 8350 is on the supported cpu list .


But frankly the board is a dog . Those 760G chipsets were not designed to run FX chips . They use an older version of cool'n'quiet that will use more power than a 9XX chip set, the SATA ports are all older SATA II that will choke a modern SSD, and the power circuitry .............. good luck.
You can have excellent overclocking on a 970 chipset board for $80 - 85. These two are very reasonably priced and have the power phases required

http://pcpartpicker.com/part/gigabyte-motherboard-ga970aud3p
http://pcpartpicker.com/part/asrock-motherboard-970performance

Probably the Asrock since it supports even the 220 watt 9XXX processors , and has an M.2 slot for ultra fast SSD's
 
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Outlander_04

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I'd say anything that is true.
Interesting that that surprises you, but not particularly relevant, I guess .

The point being is that there are decent boards for overclocking FX processors in that $80- 85 price range, and at times they are discounted further
 
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Darkbreeze

Darkbreeze

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I'll agree with that, both those 970 boards can do an admirable job of overclocking FX8, but lack features found on the 990fx boards that might be worth the difference in price, including better power phase and SATA controllers. I could not stabilize my FX-8320@4.5Ghz on the UD3P but had zero issues with stability on the Sabertooth. I might just have had a bad board too.
 
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arcticwoolf

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Mar 8, 2016
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Wow... Everyone...thank you. I had one of my AR/VR experts stop by the house and he pretty much agreed to just get a new board and not fight with what I have. All of your help is very much appreciated. Interestingly enough even he could not figure out how to manually adjust the CPU voltage other than the drop down options which would have melted the board. It calls normal optimized voltage to be 1.42 with ability to go way up from there. From what I've read that's just crazy voltage for that board. Updating the bios didn't do anything to help. Either way... Thanks again.
 
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Darkbreeze

Darkbreeze

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Guess I should have looked more closely. I assumed OL had linked the UD3P and 970 Gaming. My above references weren't to the 970 Performance, which is much newer than either of the other two boards, but I still would neither recommend running a 9xxx series piece of thermal garbage, nor running it on that board despite having 8+2 power phase.

Suffice to say, the only board I've seen so far that didn't have some kind of VRM throttling with a 9xxx series chip regardless of what kind of cooling is employed has been the 990fx Gaming, and that might have been a fluke. Regardless, that hasn't a thing to do with this thread though, so we'll try to stick to the topic at hand.

Any of those boards I listed, OR the two listed by Outlander are probably fine choices. Personally, I'd prefer a 990fx board if I was going to run an FX chip. The 990fx boards are more specifically intended for high end overclocking and multi-GPU card configurations whereas the 970 boards are really not. That newer ASRock board or the UD3P are both really good though, so I'm in agreement that if you need to go with the least expensive option, they might be what you need, and both can certainly handle some overclocking on FX 8xxx series.
 
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arcticwoolf

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Were you referring to my gigabyte board or one of the others mentioned? As I could not get anywhere with a multiplier change. Everything resulted in a boot fail even at 18.5x at optimized voltage selected and APM off/turbo disabled.
 
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logainofhades

logainofhades

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Mine was on the gigabyte board. I ran ram at 1333, though. It didn't want to run faster than that. Ran that way for about 2yrs before I got rid of it. My nephew's wife ended up buying that one, and it is starting to have issues. Not sure if it is the board, or the not so great PSU, though. I have not had time to test it out, yet. With your problems, I am leaning towards the board, though a PSU would be easier to deal with.
 
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arcticwoolf

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Mar 8, 2016
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This thread is starting to get expensive... By the time I'm done all I'll have left is a case. I had suspected the PSU as well and will probably add that to the list. Still it does not make sense that we could not manually input voltage and only had drop down options that seemed very high to start with.

Newegg here I come...
 
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Darkbreeze

Darkbreeze

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Any of these.

http://pcpartpicker.com/parts/compare/evga-power-supply-110b20750vr,evga-power-supply-220g20750xr,seasonic-power-supply-ssr650rm,xfx-power-supply-p1650bbefx/


Or these:

http://pcpartpicker.com/parts/compare/evga-power-supply-110b20850v1,evga-power-supply-220gs0650v1,fsp-group-power-supply-hg650,seasonic-power-supply-ssr750rm/
 
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arcticwoolf

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Mar 8, 2016
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Bought myself the EVGA 750 B2 PSU and the gigabyte AM3+AMD 990FX SATA 6GB USB 3.0 ATX AMD GA-990FXA-UD3 R5... Whew big title. Should be here tomorrow. If I just want to clock the FX 8320 to 4.0 Ghz should I go about disabling or can I just leave them be and move the multiplier up to 20x. Probably should disable Performance boost, but not sure about the others and driving to manual voltage as this should be only bringing to stock 8350. Your advice would be appreciated, as well as a list of the minimal changes to minimize the oh crap factor. Thanks... I really do appreciate the help.
 
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