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Gskill F3-2400C9-8GTXD

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System Name Black Killing Machine
Processor Delidded NO IHS mount Intel i7-4770k
Motherboard Gigabyte Z87X-OC
Cooling Swiftech DIR655 pump, Watercool HEATKILLER® GPU-X³ 79X0 Ni-Bl gpu, DT SNIPER CPU block, UT60 420 RAD
Memory Gskill Trident 2400mhz CL9 Samsung IC9
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#26
Stable 2666mhz with CL 10-12-12-31 2T with 1.7v on DRAM and 1.25v on I/O voltage.

http://valid.canardpc.com/2587083

Only thing I have tweaked is the first 4 timings, command rate, DRam voltage and I/O voltage.
 
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Processor Intel Core i7 3770K
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#28
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#29
I wanna what my Samsung chips are on mine but don't wanna take off the hs XD

I was able to get 2666 10-12-12-25 1T 1.65 to pass IBT

But now I'm thinking the gskill I got weren't samsung cuz those seem to oc a lot better
 

MxPhenom 216

Corsair Fanboy
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#30
When I put my CPU on water and go Ivy Bridge or Haswell I want a 16GB of 2400mhz :) Sweet kit bro!
 
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#31
When I put my CPU on water and go Ivy Bridge or Haswell I want a 16GB of 2400mhz :) Sweet kit bro!


They are pretty sweet. I run 16G of the Tridents with a 3770K under water. I still have my 3930K but like the Ivy setup better with 3 x 7970's.
 
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#32
It seems the latest batches of these use Samsung HYK0 rather than HCH9, same IC family but some say HCH9 performs better. Serial number has "2500" rather than "1500" in this instance.
 
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#33
Surprised the maxxmem latency isn't lower. Maybe it's the board.
 
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#34
I have"xxxxx2500" Ripjaws Z DDR3-2133 9-11-10-28 with the HCH9 IC's and they overclock extremely well, as do the Trident X DDR3-2400 9-11-11-31 kits I have, one of which is about 6mo old and the other is 7wk old, bothare jjust like the Ripjaws Z and are made with double sided HCH9 IC's.

For what it's worth, I have never once seen a single issue from running high memory voltage. I have been competing over at HWBot for a year and a half, and I have run as much as 1.925v through dozens of kits of memory, and not a single issue with either the RAM or the CPU's ("golden" 3930K doing 5.1Ghz with just 1.3625v, 2x delidded 3770Ks good for 5.4Ghz and 5.6Ghz on chilled water, and both will push past 112mhz bclk on DICE/LN2).

I run my memory as high as 1.775v 24/7, no issues.

The voltages you have to watch out for are VTT and VCCSA, as both of these actually send more voltage to the CPU Package (specifically the IMC), and too much can degrade chips in as little as a day.


Having spent a lot of time with the Trident X 2400 9-11-11 memory (one of my favorite non-Elpida Hypers kits), I recommend going up to 1.675v or so, which (if your CPU's IMC is good enough) is enough to run either 2400 9-10-9-27 1T or typically as high as 2700 9-13-11-31 1T/2T depending on your success with the bclk.

With Ivy Bridge (and SNB-E, and Haswell), you want as much bandwidth as possible, with timings being of secondary concern. Always get it as fast as possible, then tighten the timings. It's only NOT worth it if you have to increase the four primary timings by more than 1 for each 266mhz jump (133mhz actual).
 

cadaveca

My name is Dave
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#35
DRR3 spec requires ICs to withstand 1.9V. Whether memory controller can handle that, or if IC is error-free, however, is not part of the spec.

So yes, overvoltage of DDR3 is fine. Whether it provides any benefit, well...remains to be seen.