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ASUS M4A79XTD EVO, G.Skill ripjaw 1600 4x2 timing

post #1 of 9
Thread Starter 
My memory advertised timings (Cas latency:9, timing: 9-9-9-24) don't match up with mobo settings. any help? product is http://www.newegg.com/Product/Product.aspx?Item=N82E16820231428.
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post #2 of 9
got to manually set them within the bios, they'll default to 1333mhz with like 11-11-11-27 timings (atleast they did with me) untill you change them
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post #3 of 9
All RAM has an SPD programmed boot setting which is typically LOWER than the advertised maximum performance frequency and latencies. This is so that all of the different PC systems this RAM can be used in will BOOT without issues.

Once the system is up and running then you can set the optimal latencies and frequency for the RAM in BIOS and see if your system will run the RAM at those specifications. NOTHING is guaranteed above the default RAM frequency that your CPU is intended to operate the RAM at.

That means if you buy RAM that is certified to run at UP TO 2400 MHz. it may still only run stable or boot at 1800 MHz. or less on a Deneb or Thuban CPU/mobo. The RAM might run at 2400 MHz. on an FX CPU but the IMC in your CPU and your mobo may not want to run stable at that frequency or even boot depending on your CPU/mobo/RAM combo.

Every set of hardware is different. The point of OC'ing is to find what your hardware is capable of. wink.gif
post #4 of 9
Thread Starter 
I understand this. I am trying to find the stock settings and go from there.
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The Platinum Chip
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AMD Phenom II X4 980 M4A79XTD EVO EAH6850 DC OC V2 G.Skill Ripjaw 1600 4x2 
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VelociRaptor 10000RPM 16MB Cache SATA2 4.3ms se... Windows 7 Ultimate ASUS VS228 POS 
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post #5 of 9
Thread Starter 
I'm not a noob, not looking for a lecture, just looking for someone familiar with this combo who knows what the correct timings are
The Platinum Chip
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AMD Phenom II X4 980 M4A79XTD EVO EAH6850 DC OC V2 G.Skill Ripjaw 1600 4x2 
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VelociRaptor 10000RPM 16MB Cache SATA2 4.3ms se... Windows 7 Ultimate ASUS VS228 POS 
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The Platinum Chip
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CPUMotherboardGraphicsRAM
AMD Phenom II X4 980 M4A79XTD EVO EAH6850 DC OC V2 G.Skill Ripjaw 1600 4x2 
Hard DriveOSMonitorKeyboard
VelociRaptor 10000RPM 16MB Cache SATA2 4.3ms se... Windows 7 Ultimate ASUS VS228 POS 
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post #6 of 9
Your link above doesn't tell us which RAM kit you actually have.

If the timings are advertised as 9-9-9-24, those are what you should set them to in the BIOS.

The optimal RAM latencies are also usually on a label on the DIMMs, on the DIMM package or on the RAM makers website.

Are you using CPU-Z to confirm the actual RAM settings?
Edited by AMD4ME - 3/10/12 at 7:11pm
post #7 of 9
Thread Starter 
Sorry, wrong link. I have a kit of G.Skill Ripjaw PC31600 4GBx2 . There are alot more timings in my bios, and it doesn't just match up to the first few.
Edited by The Builder - 3/11/12 at 9:26am
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VelociRaptor 10000RPM 16MB Cache SATA2 4.3ms se... Windows 7 Ultimate ASUS VS228 POS 
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The Platinum Chip
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CPUMotherboardGraphicsRAM
AMD Phenom II X4 980 M4A79XTD EVO EAH6850 DC OC V2 G.Skill Ripjaw 1600 4x2 
Hard DriveOSMonitorKeyboard
VelociRaptor 10000RPM 16MB Cache SATA2 4.3ms se... Windows 7 Ultimate ASUS VS228 POS 
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Cooler Master GX 750W Bronze none 
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post #8 of 9
The latencies that RAM suppliers quote are the key settings you need to change. The other RAM settings in the BIOS should be left alone. The link below explains the key RAM settings.

http://www.hardwaresecrets.com/article/Understanding-RAM-Timings/26
post #9 of 9
Thread Starter 
Thanks. got it figured out.
The Platinum Chip
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AMD Phenom II X4 980 M4A79XTD EVO EAH6850 DC OC V2 G.Skill Ripjaw 1600 4x2 
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VelociRaptor 10000RPM 16MB Cache SATA2 4.3ms se... Windows 7 Ultimate ASUS VS228 POS 
PowerCase
Cooler Master GX 750W Bronze none 
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The Platinum Chip
(10 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X4 980 M4A79XTD EVO EAH6850 DC OC V2 G.Skill Ripjaw 1600 4x2 
Hard DriveOSMonitorKeyboard
VelociRaptor 10000RPM 16MB Cache SATA2 4.3ms se... Windows 7 Ultimate ASUS VS228 POS 
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Cooler Master GX 750W Bronze none 
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