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post #21 of 27
Thread Starter 
well it did 1866 mhz at 10-10-10-24 at 1.5V and passed Hyper PI 32M with flying colors. for now will be using this settings and tomorow will check the 1866mhz at 9-9-9 timings after bumping up the voltage to 1.6V then find stability and if found will try to lower voltage bit by bit and stable the same. Loving my memory module so much smile.gif
post #22 of 27
1866MT/s= 933MHZ

If you want to start clocking beyond 1866 speeds, you may have to bump up your north-bridge voltage slightly. I don't know what it defaults to as I haven't had any hands on with an FX chip. 1.25V-1.30V is probably the target range to get 2133 speeds working if I had to guess.

You might try 2133-12-12-12-36-48-2T@1.60V
If it works, start tightening down timings on that until stability problems crop up. Start with the command rate, (drop to 1T), then through the list one at a time starting with CL, lowering timings as much as they will go without causing stability problems.

I wouldn't be surprised if you could run at something like 2133-9-11-10-27-37-1T@1.60V


So when's the big day for fine tuning your CPU clocks/speeds/voltages?
     
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post #23 of 27
Thread Starter 
thank you very much.i am busy for today so will do that thing the next day, anyway if i do that is there any risk that might harm my ram module?
post #24 of 27
Some DDR3 can handle up to ~2.0V, others will begin to degrade as low as 1.7V. I've never personally heard of any DDR3 failing due to "too much voltage" when run at 1.65V or less.

The "link" you gave to your memory doesn't work [it's dependent on local conditions], so I can't check specifically which RAM you have, however, provided you have heatsinks on the memory (or at least heat spreaders), then up to 1.65V should never be a problem (All chips will suffer from a point of diminishing returns on voltage though, so there is a point at which there is no advantage to more voltage). A simple but effective test, while running a memory intensive stress test place a finger on the memory heatsink. If it's warm to the touch, everything is fine, if things are uncomfortably hot to the touch, then you're probably venturing into territory that won't return any benefits so back off on the voltage.


Very often, the same ICs of the same or similar binning used on a kit sold as a "basic" 1.5V kit, are used in a "high performance" kit sold with a higher XMP profile and 1.65V "defaults" instead. DDR3 has been around for so long now, that most of the manufacture processes are refined to a point that most ICs coming off the line are way beyond the minimum grade required to meet DDR3 spec. The result of this, is that there simply aren't many "bad bins" available to fill demand for "regular" ole 1333 speed DDR3, so they just use good stuff. From the perspective of the RAM brand, it's important to have a product offering at a wide variety of speeds/timings/voltages simply for market saturation reasons, even if they all have the same ICs.

Eric
Edited by mdocod - 1/21/14 at 7:20pm
     
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post #25 of 27
Thread Starter 
wow that' s very insightful.I've this module, you tell me whether it's good or bad.


Kingston HyperX DDR3 8 GB (1 x 8 GB) PC RAM (KHX1600C10D3B1/8G)


http://www.kingston.com/en/memory/hyperx/blu
post #26 of 27
Yep, should be pretty good modules.

There is reason to believe, based on reading the specification sheet for that module, that it might be capable of 1333-7 speeds @1.425V. Given a strong memory controller and some decent luck, this could mean all sorts of 2000MT/s+ speed/timing options at ~1.6V.
     
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CPUMotherboardGraphicsRAM
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Toshiiba THNSNH 256GB Enterprise RE3 1TB Asus BD combo drive Artic A30 
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PowerCase
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CPUMotherboardGraphicsRAM
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Hard DriveHard DriveHard DriveHard Drive
Toshiba THNSNH 19nm 256GB 1TB Spinpoint F3 WD RE3 1TB WD RE3 1TB 
Optical DriveCoolingOSOS
yes CM Seidon 120V SolydK OpenSuse 13.1 
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post #27 of 27
Thread Starter 
thanks
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