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Can't get CAS Latency down

post #1 of 5
Thread Starter 
Hey guys,

Had a go at tightening my timings a bit but I can't get my system to boot if I take my tCL down even one step. The default timings are 9-9-9-24 @1.5v but if I try to change it to 8-9-9-24 @1.65v it just flat out won't boot. What's the max voltage I should be getting my RAM to? I have GSkill Snipers so it has some sort of heatsink but it's not the best. I have a fan blowing right over them so there's also a bit of airflow but again, it's not the best.

Thanks,
Ninja!
post #2 of 5
DDR3 = 1.575v max according to JEDEC specs for stability reasons. I kind of doubt dropping your timings to 8-9-9-24 would help much as most likely you'll have to drop the frequency speed that the sticks are rated at too. I don't think it's worth it to drop frequency along with tighter timings as performance would suffer especially if you have lower clocked memory. If you want more speed you might as well DDR3 2400.
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post #3 of 5
Thread Starter 
Yeah, well I was trying to lower it to something like 8-8-8-20 or something but it won't play dice. I've tried to get it up to 1866 as well but still no success. I find it funny that the max voltage is 1.575 but people sell kits that run at 1.65v. Anyways, I think memory overclocking is out of the question for me.
post #4 of 5
1.575 is max for standard modules. Like Ninja said, power users have 1.65V all the time. So if you are looking to overclock, tweak some more performance out of the modules, you can try 1.65V and see how high you can go.

Cheers
post #5 of 5
1.65v is perfectly safe, in fact I'm comfortable with up to 1.7v or so for 24/7 use and have used upward of 1.9v for weeks at a time without any ill effects. I would increasememo ry controller voltage first tho.
   
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WD10EALX 1TB HDD Seagate Barracuda 7200.14 1TB WD3200AAKS 320GB HDD WD5000HHTZ 10krpm 500GB VelociRaptor 
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LG/Hitachi Slim DVD-R/W Custom MB-Backside VRM-sinks (Copper) 3x NZXT RF-FX140LB 1-2krpm 98.3CFM Case Fans 2x Corsair SP120-PE Case Fans 
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Heatkiller GTX680 "Hole Edition" Block + Backplate XSPC Single-Bay Res (Single 5.25 bay) EK Multioption Res X2 - Advanced 150 DD "Fill-Port Res" + Fill-Port Fitting (Red) 
CoolingCoolingCoolingCooling
2x MCP35X + Heatsinks/80x15mm Fan XSPC EX420 Alphacool NeXXos UT60 240 6x Bgears Blasters 140mm 1800rpm Fans 
CoolingCoolingCoolingOS
4x Koolance 120x25mm 2600rpm Fans Comp/Rotary Fittings (BP/XSPC/Monsoon) Primoflex Pro LRT - White (1/2x3/4) Windows 7 Professional 64bit  
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Dell P2210Hb 21.5" 1920x1080p Viewsonic VA2012WB 20.1" LCD 1680x1050 Dell U3014 Eizo 27" 1440p 10bit RGB-LED Backlit AH-IPS Panel 
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