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Post by scruffy1 on May 14, 2016 21:18:33 GMT -5
after my recent amd video card misadventure i moved back to the green team, and i have to say that the gigabyte gtx760 oc exceeded expectation in every way - it is crazy capable on the 1920x1200 it has to paint the powercolor hd7950 boost with ram issues was accepted back by the vendor shop, but testing there and back at the distributor failed to reproduce the fault - they have returned it and i will offer it up for sale on the local forum with all this info clearly conveyed, as someone may fancy it for whatever reasons they might find it attractive however, the bug had bit, and i felt the urge to upgrade my 2x4gig of ripjaws which was doing fine at 1600 9-9-9-24 1t, but it wasn't 16gig and i was unable to match out a further 2x4 despite trying - the unmatched other pair i got had xms 0.0 and the then current pair were 1.2 both sets did fine at the above timings on their own set, but together i needed to run at 1333, and really, although there's no great difference on how it feels on the desk, where's the fun in that ? enter the pair of g.skill ares (F3-2400C11D-16GAB), which i managed to snare by clever private arrangement for $75 (australian pesos) delivered Capacity 16GB (8GBx2) Tested Speed 2400MHz Tested Latency 11-13-13-31-2N Tested Voltage 1.65v SPD Speed 1333MHz SPD Voltage 1.50v some hasty testing and i managed to possibly corrupt my bios (since reflashed) and certainly confused my current win7 ultimate install to the point where i thought i might need to completely re-install the o.s., but between swapping the "old" 2x4 in and out, and leaving windoze to presumably self-repair automagically, i am now up and running ah, just like the good old bluescreen corruptions that i remember and love from last decade when mr scott was encouraging my enthusiasm to make the bh5 do stuff better the mobo won't allow 2400, and the sandybridge may have a hardware limit to ram speed (anyone know anything about that ?), but final speed is : 1.54vdimm (set in bios, but 1.524v in cpuid hardware monitor) running the pair at 2133, 10-11-10-28 1t that's 800 over spec at nominal volts for 16gig i would have thought dunno if it's much different on the desk than before, but 1 am only using 18% of capacity, and my thoughts are straying to setting up a ramdisk for shit n giggles happy to hear comment on the virtues of ramdisk, given my hardware config : i5-2500k 4.2ghz @1.22v / megahalems / gigabyte z77-d3h / vertex 4 128gb & toshiba 1tb / 16gb G.Skill ares / xonar d2 + klipsch promedia ultra 2.0 + ath ad700 / Lian Li PC-A17B & corsair hx650 / gigabyte gtx760 oc / dell u2410 and some pics, because i can
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Post by Macsbeach98 on May 14, 2016 23:54:00 GMT -5
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Post by scruffy1 on May 15, 2016 4:33:24 GMT -5
thanks pete my digging got me to this graph : and i winged it from there this stuff, and the hynix chips shown uncovered here and environs only tried a single run of memtest at my speeds, but it went well, and windoze mem check was happy also i need to figure how to turn off the video card so i can give them a long run without the fan on my gpu maxxing because it doesn't get into windows and then throttle; the pci-e slot drives the fans even if i pull the 6+8 ancillaries, and i am too lazy to pull out the card your link tells me : x40x - Hynix DDR3: 1400/140H/2400 The first digit of the new serial numbers indicates the speed bin originally assigned by the IC manufacturer: 2xxx = DDR3-1600 11-11-11 i understand that samsung ddr3 gets high praise still 1600 cl 11 doing 2133 cl 10 seems a pretty happy experience for the expense
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Post by Macsbeach98 on May 15, 2016 7:52:12 GMT -5
They will be great for what you want them for and the price was right you will notice no difference you aint benching SPI. Yep the Sammy's are the go my TridentX do 9-11-10-24 @ 2400 or 9-12-12-28 @ 2600 if I turn the voltage up they will do 2800 at the same timings.
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Post by scruffy1 on May 16, 2016 6:37:06 GMT -5
hey pete it spat the dummy gaming (the down n dirty bench test for me) but after a mild tweak to 10-11-11-28 (still 1t) it is seemingly perfect and at only 1.5vdimm that'll do pig, that'll do so, are there any "reliable" timings documented for hynix at those speeds ? - this seems to be happy on my rig, but i thought you might have some idea of things, a bit like i know 2-2-2-11 was winbond bh5's magic combo the graph i appended of speeds vs latencies doesn't seem to fit my experience with this stuff, and although i won't be trying any further adjusts (i like stock volts or under), i am as always obsessive compulsive on researching what i have fwiw for the gamers here, i have also discovered that ram speed improves the refresh rate considerably in an overclocked sandybridge the relevant page in the article is here but the salient point made is : "Performance in 3D Games At the same time, there are some applications that use operating memory very actively, and therefore react immediately to any changes in its speed. These applications are 3D games. . . As we can see, gamers should really take memory speed into consideration. Of course, the situation is different in different games, but all in all one 266-MHz increment increase in the memory frequency produces about 2% gain in fps rate in nominal mode and about 3-4% in a system with an overclocked processor. Therefore, choosing the right memory for a gaming computer should be taken seriously enough." and it shows ! the speed of stuff (and detail) in farcry4 has noticeably jumped, and for the first time ever i can see why serious gamers get so revved about frame rates... it's like listening to lossless music files after mp3 enough raving, just felt compelled to report and see if there was any further knowledge to be absorbed cheers
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Post by Macsbeach98 on May 17, 2016 16:52:19 GMT -5
Sorry Ash I dont have any special timings just as tight as you can get it stable.
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Post by Vinster on May 17, 2016 18:24:32 GMT -5
That's a nice ram clock for that era of PC. I'd be happy with that. I don't know how you would get much better. for the Ram Disk, there are a number of applications out there that will create a Soft ram disk. But that size you wouldn't have much space to do much with it. you could create a 8GB ram disk. but then Start up and shutdown will slow a lot (unless you are running a few SSD's in a RAID) as the RAM disk application will have to copy the ram to disk and back again. I played with a small RAM disk years ago. it was insanely fast. at the time I was playing with it (AMD's Ram Disk, www.amd.com/en-us/products/memory/ramdisk ) it offered an 8GB free RAM disk if it was loaded on an AMD Platform with AMD Ram... For day to day, you are best off getting a few SSD's and putting them in a RAID 0 and enjoy that speeds. Vin EDIT: look like the free soft RAM Disk is still available, but bumped down to 4GB; www.radeonramdisk.com/software_downloads.phpEDIT2: ha, 4GB is freeware, 6GB if you have AMD Radeon™ Memory installed
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Post by scruffy1 on May 18, 2016 2:00:33 GMT -5
thanks for the input vinster currently after more fiddling i am 1.548vdimm to be "stable" at 2133 10-11-11-29; my further reading suggests i can relatively safely use up to 1.65vdimm without burning the cpu, but as always, less is better in all things except speed i was already familiar with amd ramdisk software courtesy of an offer with my red team gpu way back maybe even with the hd5770 guess 4gb versus my current vertex4 as o.s. drive is a bit pointless... and in fact the current rig is plenty fast enough for all practical uses; recent snapshot (although the tras is now 29) while transcoding :
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Post by Vinster on May 18, 2016 14:56:08 GMT -5
Nice,
My playing with it yielded speeds in the 2000MB/s+ read/write speeds. Real nice, but 4 good SSD's in a RAID 0 can do that as well, with more space and greater flexibility.
Now with DDR4 now in the playing field... it would be nice to see what that could do... I'd expect speeds in the 10,000MB/s +... and servers boards like SuperMicro's that can be overclocked and also support 1TB of Ram... now you're talking...
Vin
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Post by scruffy1 on May 18, 2016 18:10:34 GMT -5
i presume 2000+ is a "good" number, but really have no idea of comparative stuff - can you put it in context with a standard 15 2500 at stock and 1333 ram ? i like that at full speed / full load the cpu is doing 76.4 watts - it thinks it's an ivy bridge
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Post by Vinster on May 18, 2016 20:21:12 GMT -5
That's a low number. that CPU is 95w. the math there has to be wrong.
Vin
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Post by scruffy1 on May 19, 2016 3:53:37 GMT -5
i realise it's a low number, but the cpu is still undervolted at 4.2 if that makes a difference to wattage - electrickery isn't my best subject also, after freezing the bios to the point of needing to pull the battery (yet again) it seems that normal vdimm 1.5 will do 2133mhz at 10-12-12-30 1T and (crosses fingers) no hiccups neither on linx or farcry4 - which in my experience is a very canny tester of unstable overclock settings do you think core temp is an unreliable measure of power ? it notes that tdp is 95.0, and that i've got a sandy bridge rev d2 in the system thanks for all your interest and input interestingly i found this article from april 2015 about klevv, a "home brand" hynix ram company founded in 2014, and they have a version rated to do 2133 at 10-12-12-30 at 1.6v - my sticks are dated july 2014, and i wonder if this is all the same batch of chips ?
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Post by Vinster on May 19, 2016 11:28:17 GMT -5
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Post by scruffy1 on May 19, 2016 18:05:29 GMT -5
i thought 313 was a glitch... will look in my bios soon-ish and report back
page 1 of that article however, states : KM3N4GX2Y-2133-10-12-12-30-0 8GB (2x4GB) 2133 10-12-12 1.6V - my major timings
in that instance tRC is zero - i think their monitoring of the trc in jdec is fubar
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Post by scruffy1 on May 29, 2016 2:40:49 GMT -5
eventually slow reply :
yes mine reads 313 for tRFC too
can i tighten that with stability, and if so, how much? no idea from any googling.... is it of major importance for gaming speed, or another tweak for benching ?
the current speed and timings is rock solid at 1.5vdimm
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Post by Vinster on May 29, 2016 14:30:16 GMT -5
eventually slow reply : yes mine reads 313 for tRFC too can i tighten that with stability, and if so, how much? no idea from any googling.... is it of major importance for gaming speed, or another tweak for benching ? the current speed and timings is rock solid at 1.5vdimm I personally don't know. I have only ever played with the primary timing myself. I usually leave everything else to Auto. I vaguely remember wanting that in the 150-250 range. but seeing it over 300 was interesting. Vin
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