bob80 Posted September 10, 2012 Share Posted September 10, 2012 (edited) Good morning guys, today I got my new AMD platform: Gigabyte 990FXA UD5 + AMD FX 4100. After assembling It I've tried to overclock memories (Patriot Viper Xtreme 2133 C11).... without results ! The motherboard fails overclocking even at 2133 Mhz -.- (10.66x multiplier). Instead If I Increase memory frequency by fsb (1866 @ 2133) there are no problem. I've flashed the latest BIOS F9 and F10beta... it's the samething. I've also tried Christian Ney's subtimings (trrd 7), nothing to do. In your opinion what could be the problem ? Edited September 10, 2012 by bob80 Quote Link to comment Share on other sites More sharing options...
bob80 Posted September 11, 2012 Author Share Posted September 11, 2012 anyone ? Quote Link to comment Share on other sites More sharing options...
Moose83 Posted September 11, 2012 Share Posted September 11, 2012 On 990FX the CPU plays a big roll. With sempron i cant go higher than 900, with Phenom 1000 and fx-8120 1250Mhz, and i have an ud7:) All memory straps are working and ram overclocking with Referenztakt work too. CPU nb and nb pll need more volts. I gave my nb 1,4V. Quote Link to comment Share on other sites More sharing options...
bob80 Posted September 11, 2012 Author Share Posted September 11, 2012 Christian Ney was saying it's extremely simple to get 2400+ on bulldozer platform using Hynix ram.. But what can you say about the fact the mobo won't post even at 2133 (stock speed) ? Is this the crappiest IMC ever, don't think so, because I get almos 2400MHz increasing FSB... Quote Link to comment Share on other sites More sharing options...
Moose83 Posted September 11, 2012 Share Posted September 11, 2012 Don´t know, i had UD3 before, and their the same, all worked fine. I uses Hyper IMC´s, with Bulldozer i can get 2450 CL8-8-8:) With stockvoltages i think you can´t set 2133 Ram:) Quote Link to comment Share on other sites More sharing options...
BeepBeep2 Posted September 12, 2012 Share Posted September 12, 2012 4100 and 6100 CPUs are generally weaker cores dunno bout IMC. Dunno about Hynix either but also some slots are worse than others and some IMCs worse than others. I had one IMC that ran Hypers at DDR 2180 8-8-8 P95 stable and two others here that only do DDR 2120...32M stable. I think 1500+ IMCs are release chips same with 8 GHz+ Quote Link to comment Share on other sites More sharing options...
bob80 Posted September 12, 2012 Author Share Posted September 12, 2012 I'll try to change slots and I'll let you know.. @Moose83: why are you saying I can't set 2133 with stock voltages ? These sticks are certified to operate at 2133 11-11-11-30 @ 1,65V.. Quote Link to comment Share on other sites More sharing options...
Moose83 Posted September 12, 2012 Share Posted September 12, 2012 Sticks sure, but remember CPU imc my friend:) when imc is weak, than it is so. I mean voltages not for your RAM! Also try the ram slots change to 2. Channel:) Quote Link to comment Share on other sites More sharing options...
bob80 Posted September 12, 2012 Author Share Posted September 12, 2012 I've tried to change slots 3-4 to 1-2.. and nothing changed. But what I can't understand is: why if I increase FSB my ram can get also DDR3-1166, so the IMC should be good to run the ram at DDR3-1066 ! At this point I think there is a memory multiplier problem... Quote Link to comment Share on other sites More sharing options...
flanker Posted September 17, 2012 Share Posted September 17, 2012 what about driving settings? Voltage of DRAM, IMC? Did you tried different dividers? Quote Link to comment Share on other sites More sharing options...
bob80 Posted September 17, 2012 Author Share Posted September 17, 2012 I tried the 9.33 multiplier, I used 1,65-1,7 as vdram.. I left other settings on auto Quote Link to comment Share on other sites More sharing options...
TaPaKaH Posted September 17, 2012 Share Posted September 17, 2012 have you raised the NB multiplier to x11 when trying 2133 divider ? Quote Link to comment Share on other sites More sharing options...
I.nfraR.ed Posted September 17, 2012 Share Posted September 17, 2012 (edited) Sam is right, this should be the issue if the board sets the NB at x10 by default, however Bulldozer NB should be 2200. Not sure how my giga sets it though. PS: Uhm, excuse me, the 2200MHz is not valid for FX-6xxx and FX-4xxx, so yeah...this should be your problem. They have it at 2000MHz stock. Edited September 17, 2012 by I.nfraR.ed Quote Link to comment Share on other sites More sharing options...
bob80 Posted September 18, 2012 Author Share Posted September 18, 2012 (edited) I'm going to try and I'll let you know EDIT: nothing to do NB @ 12x HT Link @ 11X DDR3 @ 10.66 = fail NB @ 12x HT @ 13x DDR3 @ 10.66 = fail Edited September 18, 2012 by bob80 Quote Link to comment Share on other sites More sharing options...
AMD-it Posted November 2, 2012 Share Posted November 2, 2012 Here is my attempt to max out on the Gigabyte GA-990FXA-UD3 rev.1.0: AMD FX-4170 running at 4.88GHz (22X) RAM G.Skill Pi 4Gb (2x2Gb in slots 2 and 4) 2200MHz F3-17600CL7D-4GBPIS running at 2367MHz CPU Core Clock at 222MHz NB at 2442MHz (11X) HT FSB at 2664MHz (12x) Vdimm setting at 1.710volts ND-VID setting at +0.100v Vcpu at +0.075v RAM clocks at 7-10-8-24-33 CPU cooled with Xigmatek Dark Knight RAM cooled with G.Skill Turbulence II Dual LED Fan SB cooled with 50mm fan Mosfet heatsink cooled with Asus Mosfet Fan Any attempts to get 2378 to 2400MHz may get boot to Win7x64 but unstable under load. Hope this helps but 1 Quote Link to comment Share on other sites More sharing options...
bob80 Posted November 18, 2012 Author Share Posted November 18, 2012 I got 2500MHz finally... CPU Frequency 247 (Boot. Increased it from Overdrive into the OS) DRAM Voltage 1,75V NB Voltage 1.15V CPU NB VID Control + 0.100 CPU Voltage +0.125V HT Multiplier @ 9X (from the os) TIMINGS Command Rate 2T Cas Latency 13 Ras to Cas 15 Row Precharge Time 14 RAS 30 TwTr 9T Write Recovery Time 16T Precharge Time 9T Row Cycle Time 53T Ras to ras delay 7T Quote Link to comment Share on other sites More sharing options...
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