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ASUS Support Home Location : Forum > Motherboard > Crosshair V Formula  
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  Topic : [Problem]Memory Stability Issues (16 gigs 7.96 usable) New Topic
Greg
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Posts : 5
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Tech Points : 2
From: United States
Posted:11/18/2011 2:21:00 AM # 1
>>> Comp. All new components Mobo ASUS Crosshair V Formula 0903 BIOS (newest one on the asus sight but there are other newer builds floating around) PSU Antec High Current Pro HCP-750 750W CPU AMD Phenom II X4 980 Black Edition Deneb 3.7GHz RAM 2 x G.SKILL Ripjaws Series 8GB (2 x 4GB) DDR3 SDRAM DDR3 1600 Model F3-12800CL9D-8GBRL HD Corsair Force Series GT 180GB SATA III Internal Solid State Drive (SSD) -- System wasn't stable, did the following. Changed the following in bios. RAM frequency to 1600. DRAM Command Rate 2T RAM timing to 9-9-9-24 Read to Read timing 5 DRAM command rate 5 CPU/NB Voltage 1.2 DRAM voltage 1.5 CPU-NB frequency 2400MHz Now on boot 1 of 3 things happens; System detects 16 gigs and is compleatly stable (wooo). (10%) System detects 16 gigs and only 7.96 are usable. (50%) System detects 16 gigs and system locks up in 2-7 minutes. (40%) Any other ideas what to do? My current plan is to flash CMOS put these values in again.

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RandyT
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Posts : 3165
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Tech Points : 2264
From: United States
Posted:11/27/2011 12:12:00 AM # 2
Greg,

Welcome to the forum. I am not real sure I got this right you are saying your memory volts are set to1.2 volts? I think it should be more like 2.1 volts. Check with G.Skill to be sure.
If you wish, at login, go to edit my profile (top left),click on signiture,type in your system set up and it will always show in blue on bottom of your post( this will help you and others to get more accurate info). Cheers.

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CROSSHAIR V,FX 8350, BIOS#1703, 16GB Corsair Vengeance Model CMZ8GX3M2A1600C8 4x4g 1600(8-8-8-24-41-t2)1.6V, EVGA GTX 470 s/c NV driver#326.41 WD 750 black, Hyper 2 X 120G SSD, Corsair TX750W P/S, Antec 1200 case,Zalman 9900 H/S, Win7/home,64 bit. Logitech G5,G15(newer),and marble mouse. 3DMARK06=20,530. NIS 2013.
Tonyb
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From: United Kingdom
Posted:11/27/2011 7:50:00 PM # 3
I don't know if it is a typo but after the read to read timing which (incidentally should be 4) you have Dram command rate 5 which is impossible the only options are Auto, 1T or 2T, the CPU/NB voltage is OK but the ram Voltage isn't you will need 1.65v for an AMD system, put the CPU/NB frequency back to 2000Mhz it's pointless increasing it when you are not stable. You seem to be using 2 separate 8 gig kits and not a quad kit so it's possible to get a mismatch not that it is likely, I haven't had problems using 2 kits in the past. Before trying to use 2 kits see if it is stable just using 1 then if it's OK try the other kit and go from there. I have 3 systems running 16 gig of G.Skill Ripjaws ram, 1600Mhz, 2000Mhz and this one 2133Mhz, also 1 with 8 gig at 1600Mhz. Check this link there is a memory setup guide there and also an ASUS support guy.

http://www.asusrog.com/forums/forumdisplay.php?117-Crosshair-Series-Motherboards

Incidentally there is a BIOS ver. 9921 which mainly fixes problems with Steam games not working on the Bulldozer, it's not really a BIOS for the Thuban chips .

CVF beta UEFI 9921

Latest AGESA update for Bulldozer from AMD in this build:

More enhancements for Steam games etc.

http://www.mediafire.com/?rp4xb19fkjc3g66

Just close the advert if you get it the download is behind it.

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Windows 7 Pro 64 bit, O/S, Thermaltake Kandalf case (extensively modded), SABERTOOTH 990 FX, Bios ver.0813, FX 8150 , 2x G.SKILL RipjawsX F3-17000CL9D-8GBXLD (16gig) @ 2133mhz 9-11-9-28-40-1T, 2x ATI HD5870 Crossfired, Coolermaster Silent Pro Gold 1200watt PSU, Corsair Force Series 3 120GB SSD 3x1 terabyte Seagate barracuda drives, Tribe VX water cooling, 2x24" Asus VH242 HDMI Monitors, 1 LG 24", 1 Samsung 32" HDMI.
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