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Samsung 2x4Gb Low Voltage DDR3 1600 kit (OCing to 2400+) Discussion - Page 155

post #1541 of 2062
Quote:
Originally Posted by eBombzor View Post

What is this "batch" stuff? Does Samsung update the RAM with every batch? How is it better?

In CPU-z you can see what year of the week the ram was made. Some of the ram kits made during certain weeks have reputation for over clocking well. 12/29 is really good.
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post #1542 of 2062
Quote:
Originally Posted by SonDa5 View Post

In CPU-z you can see what year of the week the ram was made. Some of the ram kits made during certain weeks have reputation for over clocking well. 12/29 is really good.

Can you show us how to read this in CPU-Z? Thanks in advance good sir!
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post #1543 of 2062
Quote:
Originally Posted by mark_thaddeus View Post

Can you show us how to read this in CPU-Z? Thanks in advance good sir!

It's under the SPD tab.



Alternatively, you can just look at the information printed on the stick.
post #1544 of 2062
It is also on the module label, just to the right of the YK0. See the attached pic.

If you note the chips themselves, you will see their production date and it will be about a week, or two, earlier than the module's assembly date (the batch #). A week 1229 module would show something like "228" on the top line of the info imprinted on the actual chips. On the chips the year is a single digit, instead of two digits like on the module, so it is "228" instead of "1228".


Edited by Reefa_Madness - 12/17/12 at 12:25pm
post #1545 of 2062
This weekend I installed 1 kit into my i7 860 P55 system listed below, replacing 4x2GB mushkin redlines which cost me almost 6x the price about three years ago. The installed kit has the same lot # as above, 1229. So...

Running at 2076 (173x12 for my i7 860 3.8 Ghz OC w/o speed step): 10-10-10-26 T1 @ 1.5v
Running at 1920 (160x12 for my i7 860 3.5 Ghz OC with speed step): 9-9-9-26 T1 @ 1.5v

I could not get anything by tightening timings at 1600 which even came close to the mushkin's performance at around 1600-1700 (though the mushkins would never reach the above speeds). I could also boot at a lower CAS for the above speeds, but not pass Linx/prime95. BTW, the above timings were tested for about 40 min (which yes I know, isn't saying much).

One note of considerable interest that most likely was mentioned somewhere in this thread:

It is CLEARLY marked on the packaging the these kit are compatible with operating at either 1.35v or 1.5v. Stated differently: running at 1.5v is safe at listed speed/timings, but for $35 US I'll take my chances as shown above.
post #1546 of 2062
+ Rep to Reefa and SimpleTech for the valuable info!

I'll have to check my mems, but I have been able to run them at 2133 speeds at 11-11-11-28 @1.35v so I'm happy!
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post #1547 of 2062
This is probably a stupid question.

Newegg doesn't seem to carry the 8gb kit now and if I get 2 of the 4gb will it work the same as the 8gb kit?
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post #1548 of 2062
Quote:
Originally Posted by Kiros View Post

This is probably a stupid question.
Newegg doesn't seem to carry the 8gb kit now and if I get 2 of the 4gb will it work the same as the 8gb kit?

Correct. You do risk not getting the same batch but that hasn't happened to me from the countless times I've ordered from Newegg.
post #1549 of 2062
Does the batch really matter? I've got a lot of sets and I don't pay attention to the batch and just set my timings on all my systems the same. The only limiting factor I've seen is that my one 2500k IMC does not like anything over 1866mhz w/o an awful lot of volts to VCCIO/VTT.
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post #1550 of 2062
Quote:
Originally Posted by tsm106 View Post

Does the batch really matter? I've got a lot of sets and I don't pay attention to the batch and just set my timings on all my systems the same. The only limiting factor I've seen is that my one 2500k IMC does not like anything over 1866mhz w/o an awful lot of volts to VCCIO/VTT.

I binned all 14 of my DIMMs individually (by setting stock timings, 1.35v and increasing memory speed on my Gulftown with one DIMM installed and recorded the clock speed where errors first presented themselves) and all ten of my 1147s came out better than any of my 1220s, though some were close, and there was certainly variation with the same batch.

So, I'd say yes, batch matters, at least to an extent.
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