OC 2600k, 2x2Gb or 2x4Gb G.Skill ???

[k0k0]

The motherboard that I will use is a Asrock Fatal1ty P67 or a Asus P8P67 Pro, but I don´t know what kind of memory is best, 2x2Gb or 2x4Gb:

- Exceleram Rippler SB DDR3 1600 PC3-12800 2x2GB CL6
- G.Skill Ripjaws DDR3 1600 PC3-12800 4GB 2x2GB CL9
- G.Skill Ripjaws X DDR3 1600 PC3-12800 4GB 2x2GB CL9
or
- Exceleram Rippler SB DDR3 1600 PC3-12800 2x4GB CL9
- G.Skill Ripjaws DDR3 1600 PC3-12800 8GB 2x4GB CL9
- G.Skill Ripjaws X DDR3 1600 PC3-12800 8GB 2x4GB CL9

[st0ned]

If you dont use more then 4Gb, the 2*2Gb kits performe better, buy one able to do 2133 CL7 or at least CL8. For 8Gb go for one with 2133 CL9 ( best ones so far :( )

[k0k0]

which one ???

[andressergio]

which one ???

buy mushkins redlines ridgeback HS 998970 im on 2133 C7 1T /trfc 74 with 2600k @ 4805HT, u can also use 3x2 at 1869 C8 or C7, 4x2 i didnt try yet but so far the best mem i've seem better than gskills

cheers :up:
Sergio

[cstkl1]

buy mushkins redlines ridgeback HS 998970 im on 2133 C7 1T /trfc 74 with 2600k @ 4805HT, u can also use 3x2 at 1869 C8 or C7, 4x2 i didnt try yet but so far the best mem i've seem better than gskills

cheers :up:
Sergio

Dom gt 2k 8-9-8-24 2250 7-10-7-27 1.65v
http://www.xtremesystems.org/forums/showpost.php?p=4765329&postcount=65

gskills best and much cheaper and better looking than the ripjawx would be the pi's 2k c6's

also the ocz sticks the new psc ones.. looks like promising also and looks awesome

[Ket]

Out of curiosity, why the P67 Fatality board? You want functional cooling on a board. The Extreme6/4 is a better choice. As for memory I can speak from experience when I say G.Skill Ripjaws work fantastically well on the Asrock Extreme6/4 boards. My kit does in excess of 2133MHz @ 8-10-8-1T 1.65v.

[andressergio]

Dom gt 2k 8-9-8-24 2250 7-10-7-27 1.65v
http://www.xtremesystems.org/forums/showpost.php?p=4765329&postcount=65

gskills best and much cheaper and better looking than the ripjawx would be the pi's 2k c6's

also the ocz sticks the new psc ones.. looks like promising also and looks awesome

thats some impressive clocks you have there mate :up:

did u try to prime for some hours those timmings as linx passes perfect on SB but prime aint easy

[cstkl1]

thats some impressive clocks you have there mate :up:

did u try to prime for some hours those timmings as linx passes perfect on SB but prime aint easy

thats a ht on issue and normally a few adjustments on skews, etc would make it pass on long runs

dram clocking is harder with ht oFF on linx than prime

i passed prime a month ago will post it later if u want but it was way to easy to pass.
it was prime95 latest avx 64bit with custom small fft 8, large fft 4096, mem 3500mb
prime tRFC 80 passed with much tighter ram timings
linx would fail in 2nd or 3rd round lol.
took me a few weeks to get it running past two runs on linx when prime was easy
and for linx also i only will run it at the max glops. hence u y see a 136glops at 4.85only

try ht off. i7 2600k ultimate vcore test since ht on and off is the same vcore.
if u can pass ht on and ht off linx at the same vcore with min 50 runs 3500mb then ure vcore is correct.
the run i did lol if ure vcore is overvolted by 0.005v .. u will fail linx quick

[Leeghoofd]

RipjawsX 1700CL9 ftw :) Review kit did 7-9-7 2133 1.65Vdimm...

Don't buy 2200mhz or other stuff... we've seen a few mobos and/or CPU's already give in after two days at Cebit lol

I only spotted the Fatal1ty dimms on the OCZ booth, rams, nothing more ram wise... SSD's Revodrives and other high speed stuff...

RipjawsX 1700CL9 tested at Madshrimps (http://www.madshrimps.be/articles/article/1000132/Gskill-RipjawsX-4GB-17000-CL9D-4GBXMD/4#axzz1FZvjlFlq)

[k0k0]

it´s true that 2x2gb is better than 2x4Gb ???

[Ket]

Higher capacity modules are fine, they probably just won't OC as well.

[Leeghoofd]

Problem is the IMC Ket... not the dimms... more ram equals harder to stabilise... even with Sandybridge... (as not all CPU's are equals)

[k0k0]

but if the bclk is 100 Mhz, the diference is that with less capacity you can use betters timmings ??? its true ?? but the oc caacity is same or not ?? I can do a 50x100 with 2x2Gb and don´t do with 4x2Gb ??

[Leeghoofd]

yes , but less ram is also easier to stabilise with the same timings... you can select 2133 divider in the bios, no need to OC the bclock to get there...

For a gamer ( not bencher ) 1600-1866Mhz ram speeds are best bang for the buck... CL7-8 is more than okay...

[k0k0]

If I use ram kingstom oem DDR3 1333Mhz, I can´t do 50x100 ??? with poor timmings ?? or its imposible because I need DDR3 1600??

[Ket]

Problem is the IMC Ket... not the dimms... more ram equals harder to stabilise... even with Sandybridge... (as not all CPU's are equals)

Not quite true. For AMD the IMC they have plays a huge part on just how far you can OC your memory, with limits usually around 1800MHz at best, for the X6s though some have been able to push 2000MHz. With intel on the other hand the IMC is not really a limiting factor, instead you are much more limited based on what the ICs on the modules feel like doing. This is because the intel IMC on SB is just far superior.

As a example I have 2 kits of PC12800 Ripjaws. Both kits on my old AMD Phenom 2 955BE setup did 1700MHz, and not a jot more nomatter what I did. On my new SB rig testing both kits individually one kit will do about 1900MHz, while the other kit happily does in excess of 2133MHz.

[Leeghoofd]

If I use ram kingstom oem DDR3 1333Mhz, I can´t do 50x100 ??? with poor timmings ?? or its imposible because I need DDR3 1600??

ofcourse you can do 50 x 100 with lower specced rams You are confusing a few things : I'm just referrring to ram speed and performance you get out of it. 1333mhz is just a tad too low (not really bottlenecking, but your CPU and subsystem can do far better) 1600Mhz rams are at a good performance/price ratio... Ofc you can always OC your 1333Mhz kit to 1600Mhz ( and maybe more ) Look at the stuff I tested here : Sandy-Bridge-CPU-a-Look-at-Overclocking-Memory-Timings (http://www.madshrimps.be/articles/article/1000113/Intel-Sandy-Bridge-CPU-In-Depth-Look-at-Overclocking-Memory-Timings-and-More/4#axzz1FZ4g0KiX)

In case you opt for 8Gb, it might be your CPU requires a bit more IO volts, ram tweaking to stabilise things (this depending on the kit you will buy). 4gb kits usually run hassle free. So out of the box, at the required specs.

Ket try to run 8 or 16Gb then you will see a difference in IMC quality... I was not talking about 4Gb in my posts, but 8gb or more... IMC always plays a role with huge quantities of ram... being it for AMD or Intel CPUs...

[PolRoger]

I was checking out 8GB kits and saw this one... (9-11-9-28) kit: http://www.newegg.com/Product/Product.aspx?Item=N82E16820231435

Does anyone know if there are or will be any CAS 8 (8GB) 2133 speed kits in the manufacturer pipelines?