Sajin
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Re: GSkill Vs. Corsair DDR4
2014/12/05 21:08:04
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SnakeBite
if the computer runs fine at 2133 and 2666, and fails at 2800 wouldn't that mean that it's either the Mobo or RAM? or am I missing something?
Btw, thanks for your time and effort on this.
It would mean the CPU's IMC is to weak to run 2800.
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SnakeBite
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Re: GSkill Vs. Corsair DDR4
2014/12/05 21:14:23
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Sajin
SnakeBite
if the computer runs fine at 2133 and 2666, and fails at 2800 wouldn't that mean that it's either the Mobo or RAM? or am I missing something?
Btw, thanks for your time and effort on this.
It would mean the CPU's IMC is to weak to run 2800.
How can one confirm that without trying different RAM/CPU?
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Sajin
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Re: GSkill Vs. Corsair DDR4
2014/12/05 21:27:57
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SnakeBite
Sajin
SnakeBite
if the computer runs fine at 2133 and 2666, and fails at 2800 wouldn't that mean that it's either the Mobo or RAM? or am I missing something?
Btw, thanks for your time and effort on this.
It would mean the CPU's IMC is to weak to run 2800.
How can one confirm that without trying different RAM/CPU?
That's really the only way you can confirm. Unless you know someone who is also running a 2011-v3 chip.
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bdary
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Re: GSkill Vs. Corsair DDR4
2014/12/06 06:42:53
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As I mentioned in post #32, the CPU's for the X99 platform support ram frequencies up to 2133MHz with normal voltages. If the IMC on your chip is a good strong one, it could run higher speeds with no additional voltage. But if you have a weak IMC (memory controller), then to run over 2133MHz might require more voltage to the IMC.
I don't know what Asrock calls this voltage, but it might be something like VSA or VCCSA. I'm sure if you do a little research, you'll find what voltage it is that pertains to the IMC.
I'll give you an example. My 3820 is a great OC'r, but has a weak IMC. The SB-E chips support up to 1600MHz ram freq. Mine just does it with "auto" voltage for the IMC. As soon as I try to run 1866 or more, I have to increase my VSA voltage quite a bit to run it stable.
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bdary
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Re: GSkill Vs. Corsair DDR4
2014/12/06 06:54:03
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Scarlet-Tech
bdary
Considering that the 5820K chip supports up to 2133MHz memory speed, it could be you'll need to increase the voltage a bit to the memory controller. I don't know what term Asrock uses for that paticular voltage, but might be worth investigating.
http://ark.intel.com/products/82932/
All x99 chips support the same thing then. http://ark.intel.com/m/pr...product/specifications that is the 5960x. DDR4 starts at 2133 and the specifications on the Ram is xmp certified through Intel, so technically should work.
Per Intel specs, DDR4 doesn't start at 2133, the CPU's support up to 2133. Intel's spec sheet shows 1333/1600/2133. Beyond that would be OC'ing the ram and would depend on how good (strong) the chip is. Or in this case, how strong the IMC is.
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SnakeBite
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Re: GSkill Vs. Corsair DDR4
2014/12/06 07:33:28
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Very useful information. ASRock calls it DRAM voltage and it defaults to 1.2v all the time. Again, bumping it to 1.35v was more stable but not enough. Does that mean I won't be able to run my RAM at 2800mhz with the CPU?
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bdary
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Re: GSkill Vs. Corsair DDR4
2014/12/06 07:48:55
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SnakeBite
Very useful information. ASRock calls it DRAM voltage and it defaults to 1.2v all the time. Again, bumping it to 1.35v was more stable but not enough. Does that mean I won't be able to run my RAM at 2800mhz with the CPU?
If you're sure the voltage for the IMC is called the DRAM voltage and increasing that much doesn't allow you to run at a stable 2800MHz, then you may not be able to with that chip. Out of curiousity, what does Asrock call the ram voltage? I would have guessed that either Dram or Dimm voltage would have been for ram itself.
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bdary
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Re: GSkill Vs. Corsair DDR4
2014/12/06 07:56:22
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SnakeBite
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Re: GSkill Vs. Corsair DDR4
2014/12/06 08:15:31
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Thanks for sharing. Very useful indeed. Have to try few things, I wasn't sure if anything greater than 1.35v is safe. But they also talk about Nick Sikhs presets, which are worth a shot.
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bdary
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Re: GSkill Vs. Corsair DDR4
2014/12/06 08:20:28
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SnakeBite
Thanks for sharing. Very useful indeed. Have to try few things, I wasn't sure if anything greater than 1.35v is safe. But they also talk about Nick Sikhs presets, which are worth a shot.
Yeah, I think after you read through what's talked about in that guide, you just may accomplish what you're trying to do. Lots of good tweaking you can do on (with) your board... 
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the_Scarlet_one
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Re: GSkill Vs. Corsair DDR4
2014/12/06 18:49:00
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bdary
Per Intel specs, DDR4 doesn't start at 2133, the CPU's support up to 2133. Intel's spec sheet shows 1333/1600/2133. Beyond that would be OC'ing the ram and would depend on how good (strong) the chip is. Or in this case, how strong the IMC is.
Ah, got it. With mine, when xmp is set, I can run 2400 @ 1.25v. If I run it manual, I can set it to 2666 and it goes up to 1.3v and the timings can go as low as 13-13-13-32, which I am happy with. I appreciate the clarification. :-)
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Vlada011
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Re: GSkill Vs. Corsair DDR4
2014/12/10 06:51:19
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More expensive DDR4 is not always better and faster. Look and package play big role.
For chip producer almost nobody ask.
Example is...
CORSAIR Dominator Platinum DDR4 2666MHz cost 440$
Latency 16-18-18-35 1.2V
Mushkin Redline DDR4 2666MHz cost 289$
Latency 15-15-15-35 1.2V
GSkill for 440$ sell 3000MHz with C15 or C16 on 1.35V.
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SnakeBite
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Re: GSkill Vs. Corsair DDR4
2014/12/10 20:00:07
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Why should I care about packaging? Yeah, it's cool and shows attention to detail. But the memory stick is what I will be using at the end of the day and not the packaging.
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MSim
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Re: GSkill Vs. Corsair DDR4
2014/12/10 23:39:50
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The only thing i care about in the packaging is if the product is protected. The outside box can be a generic brown box and i wouldn't care one bit.
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the_Scarlet_one
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Re: GSkill Vs. Corsair DDR4
2014/12/11 00:33:57
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I am pretty sure Vlada means heat spreader when he says package.
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Vlada011
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Re: GSkill Vs. Corsair DDR4
2014/12/11 02:13:31
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Yes I mean on heat spreader most and led lights and no ugly sticker as on GSkill but I try to explain that sometimes for less money customers can get even better product. CORSAIR Dominator on 2666MHz can give better result than GSkill on 3000MHz...
In worse case GSkill will drop speed on 2800MHz and tight latency on same speed or lower than Dominator Platinum 2666MHz.
At the end overclockers didn't confirm that GSkill cheaper for 100-120$ is inferior to Dominator Platinum on same speed.
If I could choose memory same price, same speed I would bought CORSAIR Dominator Platinum over GSkill but if
Dominator Platinum 2666MHz cost 400$ and GSkill 3000MHz cost 420$ and latency are almost same than I would choose GSkill offcourse. But I think 2666MHz should be max speed if someone don't plan fortune to spend on memory.
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Sajin
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Re: GSkill Vs. Corsair DDR4
2014/12/11 12:04:27
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Vlada011
CORSAIR Dominator on 2666MHz can give better result than GSkill on 3000MHz...
False. Dominators @ 2666MHz will not give better results than G.Skill @ 3000MHz due to lack of bandwidth. G.Skill offers the cheapest & fastest RAM (lowest timings) in both 2666MHz & 3000MHz categories in the 16GB range. Corsair is just ripping people off because their DIMM's look pretty.
post edited by Sajin - 2014/12/11 12:07:43
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VVhiplash
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Re: GSkill Vs. Corsair DDR4
2014/12/11 13:39:34
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Sajin
Vlada011
CORSAIR Dominator on 2666MHz can give better result than GSkill on 3000MHz...
False. Dominators @ 2666MHz will not give better results than G.Skill @ 3000MHz due to lack of bandwidth. G.Skill offers the cheapest & fastest RAM (lowest timings) in both 2666MHz & 3000MHz categories in the 16GB range. Corsair is just ripping people off because their DIMM's look pretty.
I dont quite follow... What do you mean Gskill has more "bandwidth" in their ram? (Learning moment for me)
ll Steiger-Dynamics Maven ll Intel i7-5930k 4.2Ghz ll ASRock X99 Extreme6/AC ll Liqmax II 240 ll GeiL Super-Luce 32gb 2666mhz ll (x2)EVGA GTX 980 SC ll Samsung XP941 500gb and 850 Pro 1TB ll EVGA PS 1000W Platinum ll
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Sajin
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Re: GSkill Vs. Corsair DDR4
2014/12/11 13:59:33
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VVhiplash
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Re: GSkill Vs. Corsair DDR4
2014/12/11 14:02:47
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ll Steiger-Dynamics Maven ll Intel i7-5930k 4.2Ghz ll ASRock X99 Extreme6/AC ll Liqmax II 240 ll GeiL Super-Luce 32gb 2666mhz ll (x2)EVGA GTX 980 SC ll Samsung XP941 500gb and 850 Pro 1TB ll EVGA PS 1000W Platinum ll
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Vlada011
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Re: GSkill Vs. Corsair DDR4
2014/12/11 14:21:31
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Sorry this was mistake... I don't know why I write CAN, when I mean CAN'T... It's completely impossible to 2666MHz RAM is better than 3000MHz when 3000MHz can work on lower timming even if controller can't achieve 3000MHz... It's unknown why CORSAIR ask so much for Dominator (about 100-120$ more) for same speed and similar latency example. For me I would probably choose this memory for X99 platform GSkill F4-2800C16Q-16GRK 4x4 GB 1.2V 16-16-16 Kit cost exactly 200$ less than Dominator Platinum 2800 18-18-18-36 1.2v with same speed but GSkill have even tighter latency. That's insane difference. Only if CORSAIR this time really choose best chips for Dominator Platinum but that's not confirm. People still fight for XMP sometimes.
post edited by Vlada011 - 2014/12/11 14:24:48
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rcarlos243
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Re: GSkill Vs. Corsair DDR4
2014/12/18 01:39:21
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