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XMP1 or 2?

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April 14, 2012 1:45:13 PM

I am interested in Biostar TZ77XE4 with Patriot DDR3 1866 XMP RAM. Which should I use?

More about : xmp1

a c 347 } Memory
April 14, 2012 3:07:12 PM

What do you mean by "XMP1 or 2?", if you're referring to the Profile then typically it's Profile1.
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April 14, 2012 3:30:35 PM

thx, wuts the difference between XMP profile one and two? What other memory settings need to be changed once I select the profile? I will not change CPU settings.
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a c 347 } Memory
April 14, 2012 3:59:12 PM

The difference between the (2) Profiles depends on the kit. The differences are typically the Frequency and/or the CAS Timings. Most RAM kits only have Profile1 and not Profile2; meaning just because the BIOS has the option it has nothing to do with the kits themselves.

To find out both the available 'SPD' (aka JEDEC) & XMP settings for your kit use CPU-z and look at the 'SPD' tab. Also, the 'Memory' tab shows the current running Frequency and CAS Timings (multiply the DRAM Frequency * 2). CPU-z - http://www.cpuid.com/softwares/cpu-z.html

Example 'SPD' tab (multiply the Frequency * 2)
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April 14, 2012 4:02:49 PM

So the XMP can make it go to 1218 mhz AND/OR 1370 mhz for your example? The SPD is 1066 mhz?
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a c 347 } Memory
April 14, 2012 4:20:55 PM

The 'example' above is not encoded with an XMP Profile, so using a 'NULL' (nonexistent) XMP Profile would potentially result in both a BSOD plus 'Overclock Failure' boot failure. Here's mine with (1) XMP Profile, so I would have to choose XMP Profile1 which is indeed what I've done plus in my case both VTT/VCCSA voltage tweaks:
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April 14, 2012 4:41:11 PM

I thought 1600 mhz would require higher voltage, not lower. Command rate shows up only when there is overclocking? Is ur SPD 1333 mhz?
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a c 347 } Memory
April 14, 2012 5:05:51 PM

I have the more expensive 1.35v ultra low voltage kits (better on the CPU), and most all DDR3-1600 and faster kits have a Command Rate of 2 (aka 2, 2N, 2T). SB-E by default are actually up to DDR3-1600 and so are the forthcoming IB, whereas the AMD 'FX' are up to DDR3-1866 or the highest JEDEC up to 933MHz JEDEC (AMD does not support XMP Profiles it's an Intel only 'SPD').
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a c 347 } Memory
April 14, 2012 5:22:40 PM

Those wouldn't be 'my' picks for SB or IB. However, XMP + Profile1 should work. The IB's Default is anywhere from DDR3-1066 -> DDR3-1333 -> DDR3-1600, but can handle up to DDR3-2600. However, other than synthetics won't help much.

Example of a DDR3-1866 kit I would consider on Z77 + IB (1.50v and lower CAS) - http://www.newegg.com/Product/Productcompare.aspx?Submi...
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April 14, 2012 5:27:03 PM

The ripjaws x was tested for the 6 series mobos, prolly don't have XMP1.3 ?? Z77 mobos has XMP1.3.
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a c 347 } Memory
April 14, 2012 7:52:36 PM

Any P67/Z68 kits are fine, interesting I originally posted 5 kits. Any version of XMP is compatible with Z77.

I was trying to keep the prices down as much as possible based from the kit you posted earlier.
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April 14, 2012 8:01:59 PM

Well I already bought it when it was on sale for $35 after rebate.
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a c 347 } Memory
April 14, 2012 8:23:20 PM

Then keep it.
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April 14, 2012 9:02:49 PM

Best answer selected by mikeangs2004.
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a c 146 } Memory
April 14, 2012 11:50:26 PM

This topic has been closed by Nikorr
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