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Old 13-06-2010, 04:20 AM   #129
spoolindsm127
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Interesting findings there eva2000.

Since increased frequency isn't really beneficial (i.e. 2200MHz CL8 vs 1600MHz CL6) I think <1700MHz at CL6 is good enough don't you think?

I actually just picked up a R3E so my build got delayed a bit longer. I am planning to try and run my Mushkins at ~1600MHz CL6 or lower (if possible). Let's see how that goes...

And you said 980x safe vtt is below 1.5V, but how about Bloomfields?
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Old 13-06-2010, 09:45 PM   #130
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The price for the Super Talent DDR3-2000 C7 2x3GB kit has dropped to USD $299
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Old 13-06-2010, 10:28 PM   #131
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By spoolindsm127 View Post
Interesting findings there eva2000.

Since increased frequency isn't really beneficial (i.e. 2200MHz CL8 vs 1600MHz CL6) I think <1700MHz at CL6 is good enough don't you think?

I actually just picked up a R3E so my build got delayed a bit longer. I am planning to try and run my Mushkins at ~1600MHz CL6 or lower (if possible). Let's see how that goes...

And you said 980x safe vtt is below 1.5V, but how about Bloomfields?
  • bloomfield cpu vtt = <1.35-1.45v 24/7 and <1.45-1.65v benching only
  • gulftown cpu vtt = <1.3-1.4v 24/7 and <1.4-1.5v benching only with occasional 1.5375v but try to keep it <1.4875v
But <1.4v for 980x is just theory as no solid proof or reported failures so hard to say.

I saw in VR-Zone's computex report http://i4memory.com/f41/vr-zone-com-...storage-24237/ - Gskill has 6x4GB = 24GB kit rated at DDR3-2000Mhz 9-9-9-24 at 1.65v with i7 980X, no idea what kind of CPU VTT is needed for that, but I'd say it would be pretty high even with reduced uncore to mem frequency 1.5x min ratio requirements!

By GenAn View Post
The price for the Super Talent DDR3-2000 C7 2x3GB kit has dropped to USD $299
wow that's quite cheap at US$49.83/GB, although he 2200C8 2x2GB kits cost me US$650 all up for 3 kits inc shipping which comes to US$54.17/GB.
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Old 14-06-2010, 04:09 PM   #132
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I'll make sure to keep those values in mind when im OCing my 920, thanks eva2000

@ GenAn,

I know buddy, I just saw that and was coming to update the thread. Actually more like $280 shipped if you use Bing

I remember when I was cancelling my order for the 2200 CL8 they wanted $90 more for me to "upgrade" to the 2000 CL7. Now they drop the price like that

(you should call them up and say you JUST ordered this memory and were planning to purchase more and tell your friends about it. Use the excuse that one of the sticks looks different . Ask if you can get the difference back...seems they are willing to negotiate if it benefits them in the long run. If you can convince them that you can actually get them more business they might work with you...they're strictly business minded.
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Old 14-06-2010, 10:37 PM   #133
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Hi eva2000 you think this kit of memory is good??
http://www.ewiz.com/detail.php?name=WS220UX4G9
this kit and the only one I found here in Japan to buy
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Old 14-06-2010, 11:11 PM   #134
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By spoolindsm127 View Post
I'll make sure to keep those values in mind when im OCing my 920, thanks eva2000
no probs

By ubuntulucio View Post
Hi eva2000 you think this kit of memory is good??
http://www.ewiz.com/detail.php?name=WS220UX4G9
this kit and the only one I found here in Japan to buy
tRCD = 9 for DDR3-2200Mhz is probably still Elpida Hyper or some form of Elpida maybe Elpida BDBG that replaced Elpida BBSE ? So still decent.
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Old 14-06-2010, 11:33 PM   #135
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By eva2000 View Post
no probs



tRCD = 9 for DDR3-2200Mhz is probably still Elpida Hyper or some form of Elpida maybe Elpida BDBG that replaced Elpida BBSE ? So still decent.
If it were BDBG wouldn't it have to be 9-10-9 or 9-11-9? I don't think those ICs can do tRCD 9 at those high clocks, has to be BBSE or Hyper right?
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Old 14-06-2010, 11:53 PM   #136
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Bill posted his Elpida BDBG results tRCD 9 scaled to DDR3-2100mhz on his Kingston HyperX KHX2000C9AD3T1FK3/6GX http://www.xtremesystems.org/forums/...d.php?t=250367 so it can come down to binning as well as fact that that was with 3x2GB Kingston HyperX KHX2000C9AD3T1FK3/6GX on X58 (okay quote below says P55) while Super Talent WS220UX4G9 is 2x2GB dual channel kit, so slightly easier to get to DDR3-2200Mhz tRCD 9 + better binning, could be possible? Or some new Elpida IC to replace Elpida MGH-E and MNH-E Hypers ? Just guessing

By BenchZowner
I'm doing some initial testing on P55 ( sigh ) as I gave my classified to tsan for some tests with his 980X, so these numbers are definitely not final, and probably not maxed out ( need to get the classified back : )

tCL ( CAS Latency ) 6 max stable around DDR3-1550
tCL ( CAS Latency ) 7 max stable around DDR3-2100 ( mobo/platform limit for sure )
tRCD ( RAS to CAS Delay ) 6 max stable around DDR3-1400
tRCD ( RAS to CAS Delay ) 7 max stable around DDR3-1600
tRCD ( RAS to CAS Delay ) 8 max stable around DDR3-1900
tRCD ( RAS to CAS Delay ) 9 max stable around DDR3-2100 ( mobo/platform limit for sure )
tRP ( RAS Precharge ) 5 max stable around DDR3-1600
tRP ( RAS Precharge ) 6 max stable around DDR3-1900
tRP ( RAS Precharge ) 7 max stable around DDR3-2100 ( mobo/platform limit for sure )

More to come soon
hmm looking back, Elpida BBSE was some awesome memory ics, lower cost and decent clocks - my A-DATA 2000X and Gskill 2000C9 Tridents were some solid stuff
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