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Crucial vs GSKILL RAM for new system

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June 16, 2011 5:08:38 AM

Hey guys, I'm building a new system (my first time trying it) and would like some input as to what RAM to install. The mobo is going to be an ASRock z68 Extreme4 with an Intel i5 2500K proc. I plan to OC the processor to 4GHz, which from what I've read isn't a big deal for the Sandy Bridge chips. I'm going to install 8G of RAM. I'm considering either Crucial CT2KIT51264BA1339 or G.SKILL Ripjaws X Series F3-12800CL9D-8GBXL. The specs for both are pretty much the same: dual channel, CL=9, 1.5 V. The only differences I see are in speed: Crucial = DDR3 1333 (PC3 10600) vs the GSKILL = DDR3 1600 (PC3 12800). The GSKILL also has a heat spreader whereas the Crucial doesn't.

Any ideas as to whether there's a real difference between the two RAM alternatives, given my scenario? Any input would be appreciated. Even other RAM suggestions.
a b } Memory
June 16, 2011 5:16:39 AM

Get GSKILL DDR3 1600 (PC3 12800) this Ram high performance, you have good CPU you must get good other hardware for balance :) 
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June 16, 2011 6:52:44 AM

Thanks for the input heny. I know the Crucial is good ram, I'm just not too sure about the ability of that module I've chosen to match with the OCed processor (at least a processor ramped from 3.3 to 4 GHz). Also wasn't so sure if the speed difference between 1333 & 1600 would be of any real benefit.
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a b } Memory
June 16, 2011 7:04:05 AM

1600 mhz would be potentially get maximum clock and low Cas timming will get and if OC Ram must have Heatsink
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June 16, 2011 1:39:02 PM

I see. I wasn't sure how important that heat spreader would be on the GSKILL. I guess it wouldn't hurt to have one on there, but I wasn't sure if it was sort of a gimmick.
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a c 347 } Memory
June 16, 2011 1:52:58 PM

Assuming G.SKILL 'fixed' the problem the 2X4GB 1600 CAS 9 are fine {F3-12800CL9D-8GBXL}, as a note they have had problems in 16GB configurations 4X4GB. Therefore, IF 16GB is the eventual goal then look at G.SKILL F3-12800CL8D-8GBXM or Corsair CMZ8GX3M2A1600C9B {note the fins are tall w/some HSF}.

Temps, most 1.50v do NOT get hot enough to justify large fins. Yep, the 1.80v did get hot; higher voltage = higher temps.

1600 MHz CAS 8/9 is the SB sweet-spot -> http://www.bit-tech.net/hardware/memory/2011/01/11/the-... and 8GB+ is the ideal gaming sweet-spot -> http://www.tomshardware.com/reviews/ram-memory-upgrade,... In any case don't forget to get a 64-bit OS and OS limits -> http://msdn.microsoft.com/en-us/library/aa366778(v=vs.85).aspx#physical_memory_limits_windows_7
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June 16, 2011 2:15:56 PM

Ah, thanks for the info jaquith! I was unaware there had been a problem with GSKILLs mentioned. A concern I had was whether the Crucials I've selected would be unable to handle the OC to 4G.

I'm definitely getting the 64-bit OS (win 7 professional). I'm not sure yet if 16GB is the goal. Will see. I appreciate the links too.
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a c 347 } Memory
June 16, 2011 2:33:48 PM

Crucial is fine, but I tend to gravitate towards 'performance' RAM. The OC of the CPU is fine for any of the compatible RAM, but if you also want to OC the RAM e.g. higher frequency 1800 MHz or lower CAS over tested then stick with G.SKILL or similar performance RAM. The truth is there minimal differences, the quality of the RAM's IC is where it's all at. Since the 'Base Frequency' is essentially locked the benefits of 1600 vs 1800 is limited.

Again, on the SB CPU look for 1600 MHz CAS 8-8-8-24 or 9-9-9-24 @ 1.50v and 4GB per stick density.

Example -> $305 F3-17600CL9D-8GBXLD is VERY Foolish and a waste for the SB CPU and the $90 F3-12800CL8D-8GBXM is 98~99% the performance for 1/3 the money.

Win 7 Pro x64 is what I use, FYI for free you can also install and run XP Mode -> http://www.microsoft.com/windows/virtual-pc/download.as...
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June 16, 2011 2:48:33 PM

OK, I assumed that if I were to OC the processor from 3.3 to 4 GHz that I'd also have to manipulate the RAM somewhat. If I can OC the processor as I want to and not mess with the RAM, then I'd prefer to just use the Crucial, as I just got it in the mail. If I get strong recommendations that the Crucial I selected isn't up to the task, then I'll send it back and order the GSKILL or some other performance RAM.
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a c 347 } Memory
June 16, 2011 3:15:40 PM

The Crucial you linked is 1333 MHz CAS 9, and as I suggested 1600 CAS 8/9 is the sweet-spot for SB. Also for $82 Crucial CT2KIT51264BA1339 vs $90 G.SKILL F3-12800CL8D-8GBXM I would recommend the G.SKILL.

Here's a review -> http://yutubemedia.com/crucial-8gb-2x4gb-ddr3-memory-re... in this article, I skimmed over it, the Crucial 'can' be set to run 1486 MHz 8-8-8-24 2T but it wouldn't be my first choice.

To be clear in the Crucial vs G.SKILL debate -- spec per spec there's little differences, but that's not what you linked. Further, don't confuse CPU OC with RAM OC, you can OC the CPU and not the RAM or visa-versa or both or neither.

Compatible RAM from Crucial -> http://www.crucial.com/store/listparts.aspx?model=Z68%2...
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June 16, 2011 4:14:00 PM

You make good points jaquith. I've been reading around a little more, and with your input, I think I'll return the Crucial and give the GSKILL a shot. A little more headroom is a good thing, and the price difference is insignificant between the two kits. Thanks much for the advice and the links!
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a c 347 } Memory
June 16, 2011 5:27:07 PM

Good Luck! :) 
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June 17, 2011 1:48:02 AM

I like Corsair stuff, and I've used Kingston before. I've heard Crucial is good but never tried it. G.skill seems pretty good, I've used it a little.
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June 17, 2011 2:50:29 PM

The GSKILL Ripjaws I've chosen has really good user ratings on Newegg. It has a 5 egg rating, and with 200 reviews, I figure it's a pretty reliable measure.
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a c 347 } Memory
June 17, 2011 3:11:31 PM

The RAM you choose should be fine, the RAM I listed is specific for Sandy Bridge CPUs; yes the RAM IC's are indeed different. I tend to recommend only what I 100% know works and is proven. For example the Ripjaws X CAS 9 has had issues so I did NOT list them above. The specific problem is when running the 2 kits of 2X4GB {F3-12800CL9D-8GBXL} however the CAS 8 have had no such problem -> F3-12800CL8D-8GBXM

Good Luck! :) 
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