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Samsung 2x4Gb Low Voltage DDR3 1600 kit (OCing to 2400+) Discussion - Page 63

post #621 of 2062
Quote:
Originally Posted by rakunSA View Post

so after upgrading from 4x2gb of elpida ddr3-1066 to 4x4gb of these samsungs, my boot time has increased....from 13 seconds to 18-20 seconds :/ twice the capacity and twice the speed too!

I highly doubt that your increased boot time has anything to do with the additional DIMMS. I monitor my boot time and it sometimes does change and for no apparent reason, or at least one I can isolate. What seems to make the biggest difference in boot time is the addition of any SATA devices, including hard drives and optical drives.
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post #622 of 2062
boot times are depending on hard drive speed.
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post #623 of 2062
Quote:
Originally Posted by ericeod View Post

My tWCL (Cas Write Latency) was fine, but I tweaked the tRFC (from 148) to 160 and a few other secondary timings (will note them later... I can't remember) and am now testing at 1.45v vdimm. So far it is stable after 2hrs.

Adding a second DIMM per channel almost always requires tRFC to be bumped, and this as much a factor of them memory as the memory.

I'm finding that these Samsung chips can handle pretty tight tRAS and tRC (though tRC below 35 or so isn't really helping anything for me), but it's no better than any other 4GiB DIMM with the kind of tRFC it needs.
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post #624 of 2062
2200mhz at c14 is worse than 1066 at c7 id say. My friend picked these up and to get 2133 he needs c12-c13. my Mushkin get to 2133@1.6v and 11-10-11-27
post #625 of 2062
Quote:
Originally Posted by 8800GT View Post
2200mhz at c14 is worse than 1066 at c7 id say. My friend picked these up and to get 2133 he needs c12-c13. my Mushkin get to 2133@1.6v and 11-10-11-27

I'm getting 2133MHz 10-10-10-28 2T @1.575V 10h P95 Blend stable without much tweaking. Could probably lower the voltage if i did. What CPU does your friend have?

 

And your rig is currently saying "2133MHz @ 12-11-12-34 1.6v".


Edited by nawon72 - 3/25/12 at 3:44pm
post #626 of 2062
I need 1.5v for DDR 1680 on these. 1.4v is enough for 1600-1650, but 1680 CL8 is just a bit too far for long term stability with six DIMMs in my system.
Quote:
Originally Posted by 8800GT View Post

2200mhz at c14 is worse than 1066 at c7 id say.

What makes you say this? Even in worst case scenarios 2200 CL14 would have lower latency than 1066 CL7 and much higher theoretical bandwidth. Most every test will bear out these results.
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post #627 of 2062
is it ok to run these is 1866 mode at 1.5v without overclocking the processor?
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post #628 of 2062
Quote:
Originally Posted by dlee7283 View Post

is it ok to run these is 1866 mode at 1.5v without overclocking the processor?

yup ran these on my v-pro with a g620 @ 2133 1.5v
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post #629 of 2062
What's better for gaming: lower latency or memory speed?

Also whats the general concensus for average stable oc on these for just 1.5v?
post #630 of 2062
Went back to tRAS 24 and tRC 40, as they are actually faster than 17/25 in most tests, and are at least as stable.
Quote:
Originally Posted by scheibler View Post

What's better for gaming: lower latency or memory speed?
Also whats the general concensus for average stable oc on these for just 1.5v?

You mean timings or memory speed? Latency is dependent on both. Anyway, it's going to depend on what timings you can get at what memory speeds. Personally, I've focus on clocking as high as you reasonably can first, and tightening timings second.

As for the capabilities of this memory,TPU's results seem pretty reflective of the average, you should check out the article.
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