Performance issues w/ 990fx Fatal1ty Killer
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=1890
Printed Date: 18 Jul 2025 at 9:49am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Performance issues w/ 990fx Fatal1ty Killer
Posted By: fabo
Subject: Performance issues w/ 990fx Fatal1ty Killer
Date Posted: 01 Feb 2016 at 10:13am
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Any and all help would be appreciated. Brand new board and have had nothing but issues. Asrock 990fx Fatal1ty Killer 3.1(as if the 3.1 makes a difference) AMD 1100t Gskill 2x4gb 1600mhz Nvidia GTx 560ti 500w psu Corsair H80 cooling Windows 7 64bit All drivers are up to date. (video, chipset, audio, lan, and anything driver booster ran) I understand the psu may be a limiting factor but hesitate to think it is the culprit as I ran the same setup on a different board and was getting consistent and higher fps ingame. Currently I get 60-100fps on 800x600 in CS:GO with a fresh install of windows with or without all eco garbage turned off. Comparitively I was able to achieve 300-400 on the same resolution. Tried default settings and a moderate overclock. Board will not take overclock settings from bios if memory is in dual channel. Windows will not utilize 8gb when in dual channel (3.97gb usable). Bios overclock settings stick when in single channel configuration. When overclocking voltages the cpu-v will degrade by .1v when under load or idle (setting 1.45v, hw monitor reading 1.35v). However use of offset +100mV and resolves that. However no change in fps. Ready to call a spade a spade but don't want to encounter the same issue. At wits end with this. Explain it like I'm five but realize I've been at this for a while now.
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Replies:
Posted By: fabo
Date Posted: 01 Feb 2016 at 10:14am
| Bios is also updated. |
Posted By: PetrolHead
Date Posted: 08 Feb 2016 at 7:26am
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Does HWMonitor show the correct clock speeds for the CPU? The voltage shouldn't affect the FPS, only the stability of your system. The fact that you are seeing lower Vcore in HWMonitor than the one that is set in BIOS may just be due to some energy saving feature, but if the clock speeds are correct and your system is stable, I wouldn't worry about it now. If I were you, I would check if the CPU has any bent pins. Those pesky pins are pretty easily bent during installation and based on what I've read on the forums, a bent pin can lead to all sorts of weird symptoms. So just remove the CPU and check that all the lines and rows are straight. While you are at it, it may also be a good idea to remove and reinstall the GPU and double check that all the cables are properly fastened. ------------- Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, Sapphire Pulse RX Vega56 8G HBM2, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit |
Posted By: wardog
Date Posted: 08 Feb 2016 at 4:17pm
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1. What is the 2x4GB Kit part number? My first two instincts are 1. They are not actually a matched kit, OR, 2. They are not compatible with this motherboard. You've update to the latest BIOS and no go so that is one notch towards them being not compatible. And they get another notch towards not being compatible for failing to play nice while in dual channel. 2. These two sticks are in A2 and B2 where the belong, right? If not place them there and before re-starting do the full monte regarding CMOS Clearing. ir pull battery and jigger the CLRCMOS jumper. 3. Considering what all you most likely have done so far in respects to troubleshooting now would be as good a time as any to do the full monte anyways if for nothing else freeing/clearing any possible stuck values in the BIOS 4. Fire up four instances of http://www.cpuid.com/softwares/cpu-z.html" rel="nofollow - CPU-z and post screenies or each sticks Memory and SPD tabs and post them here. If you need an image hoster use http://imgsafe.org/" rel="nofollow - http://imgsafe.org/ . It's fast. easy, and best of all NO Registration is needed. Use Windows own Snipping Tool and capture just the open CPU-z tabs. 5. Let's address the PSU. What Make, Model, and its age? |
Posted By: Xaltar
Date Posted: 08 Feb 2016 at 4:39pm
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In addition to Wardog's advice I would also like to clarify a few things: 1. Is the CPU new or from a previous build? 2. What cooling are you using on the CPU and do you have any fans directing air onto the heatsinks near the CPU socket? If the CPU is in fact from another system then you should do as PetrolHead suggested and check for bent pins, they can be difficult to spot so take your time looking, possibly with a magnifying glass. We had another post in these forums with similar issues and it turned out to be a couple of bent pins on the CPU that were responsible. As Wardog noted, the RAM should be in slots A2 and B2 on that board, I have seen in the past that having the RAM in the wrong slots can cause issues. ------------- 
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Posted By: wardog
Date Posted: 08 Feb 2016 at 5:02pm
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I don't see(pun unintended) bent pins here as the culprit. Other than low fps, he doesn't state that his installing Windows acted strange or that his Windows install is anything but stable. He doesn't mention any instability issues. I'd like to think that goes some way towards it not being a bent or missing pin. Maybe though. Though, his voltage not staying put combined with his use of water cooling could lean towards overheating VRMs. |
Posted By: wardog
Date Posted: 08 Feb 2016 at 5:07pm
And thinking of his VRMs is why I inquired in my first post "Let's address the PSU." This 500w PSU is right at the cusp of running that GTX 560ti when the PSU was new. The 560ti req's a minimum 500w. |
wardog wrote:Posted By: WKjun
Date Posted: 08 Feb 2016 at 6:27pm
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About the CPU Offset Voltage: Is there a Load Line Calibration (LLC) setting somewhere? If I interpret it right, this setting raises Voltage in idle and load as well, where LLC just compensates Voltage drops under load... ------------- PC1: FX-9590@def|290 |16GB@2133|Sabertooth 990FX R2.0 PC2: FX-8320@4.5|290 |16GB@2133| " PC3: FX-9590@def|280X|16GB@2133| " PC4: FX-9370@def|280X|16GB@2133| " PC5: FX-6300@4.6|7950|16GB@1866|990FX-UD3 |
Posted By: wardog
Date Posted: 08 Feb 2016 at 11:05pm
Yes, that is how both work. As the OP posited that he's be at this a while now I didn't question why but instead considered yet another reason for him to consider the PSU. |