i7 2600K Overclocking RAM Help

cococabana · Mar 12, 2014

Hey guys, i have gotten an i7 2600k and an Asrock Z77 Extreme 4 Motherboard. Now i am not sure what RAM to buy. It is my understanding that Mhz of the ram do not matter where OC is concerned? Anyways i have the choice of the following 8GB Ram Kits and on 6GB:

Kingston HyperX Black 1600 Mhz
G SKill Ripjaws 1600 Mhz
Corsair Vengence 1866 Mhz
OCZ Platinum Tri Ram 6GB Kit 1600 Mhz

I am aiming for an OC Clearence of 4.5 Ghz on Air.

Gee Bee · Mar 12, 2014

yes you are correct. My gskill runs at 1600mhz, no matter what i set the ivy to on z77. Sandy will be no different. You won't know difference between 1866 and 1600 in real world use, except in benchmarks. i'd go G.Skill or OCZ

Your more likely to get 4.5ghz on sandy, as their thermal properties are more efficient with their soldered HS. I can get 4.5 but it's to hot for my liking.

Tradesman1 · Mar 13, 2014

With a 2600K look to 1866/9 or even 2133/9, I'd look to the GSkill Snipers or Ripjaws X

cococabana · Mar 13, 2014

Tradesman1 :

Any specific reason? since i wont be messing with BCLK, only multiplier, freq shouldn't matter right?

Gee Bee · Mar 13, 2014

1600mhz 9-9-9-24 is optimal. In matters more with APU use. I oc'ed my ram significantly and didn't notice any difference in gaming or day to day use. There has been a few in depth on this and the general consensus as i recall was the difference above 1600mhz was not that much. Which is why i probably never noticed it when i had my ram oc'ed. I'd just get the G.Skill 1600mhz dual channel.

Tradesman1 · Mar 13, 2014

Depends on what you do, if strictly gaming them 1600/9 is fine, gaming mainly just uses DRAM as a conduit, though if you multitask, use memory centric apps, large data sets, etc, then the higher bandwidth provided by higher freg DRAM can improve performance

cococabana · Mar 14, 2014

Gee Bee :

Ok so 1600 Mhz it is. Can you tell me what actual difference is there between the Hyper X Black and the g,skill? because i dont think there is? and i can use the cpu cooler clearance of the kingston.

Tradesman1 · Mar 14, 2014

cococabana :

________________________

Depends on what you do with your rig, if simply gaming, might see 1-3 FPS, but if your're going to be computing (imaging, video, VMs, CAD, multi-tasking, etc, the extra bandwidth of the higher freq DRAM will come into play, the actual CPU OCing has little to nothing to do as far as your DRAM goes, unless you get up to 32GB of DRAM, I easily run 4.9 on my SB (2500K) with 16GB of DRAM, but the extra voltage required to stay there with 32GB has me dropping it to 4.8 (great mobo, by the way, that's what I run with my IB build

cococabana · Mar 15, 2014

Thankyou so much for your time. One last thing. What is the difference between Hyperx black and g skill ripjaws? arent they both 1600mhz 9-9-9-24 and dual channel?

Tradesman1 :

cococabana :

________________________

Depends on what you do with your rig, if simply gaming, might see 1-3 FPS, but if your're going to be computing (imaging, video, VMs, CAD, multi-tasking, etc, the extra bandwidth of the higher freq DRAM will come into play, the actual CPU OCing has little to nothing to do as far as your DRAM goes, unless you get up to 32GB of DRAM, I easily run 4.9 on my SB (2500K) with 16GB of DRAM, but the extra voltage required to stay there with 32GB has me dropping it to 4.8 (great mobo, by the way, that's what I run with my IB build

Tradesman1 · Mar 15, 2014

Many of the lower end Hyper X sets run at 1.65 (notably the 1600 sets), there's no need for that much voltage on basic entry level sticks, over 90% of All 1600 sets are 1.5 or less, more voltage means more heat and also can be indicative of cheap memory ICs (memory chips)...The RJs at 1600/9 are the standard 1.5

cococabana · Mar 15, 2014

Tradesman1 :

AH i see thankyou. Going for the Ripjaws then.

4Ryan6 · Mar 15, 2014

@cococabana

There is a difference between the Sandy Bridge and Ivy Bridge, first off any memory speed past 1333mhz is overclocking the Sandy Bridge CPU memory controller which does not matter if you're settling for a less than 5ghz overclock by increasing the CPUs Vcore and Multiplier.

The Ivy Bridge memory controller is overclocked with any speed past 1600mhz, my point is overclocking the CPUs memory controller adds heat to the CPU which in turn limits the top end of the CPUs possible overclock!

But we're talking about your 2600K so I suggest 1333mhz at CAS 7 to give you a rock solid memory foundation by not overclocking the CPUs memory controller and you will be able to reach a higher stable CPU raised multiplier overclock, without adding that extra heat.

But if you'll be settling for a 4.5ghz overclock then disregard what I am telling you!

Additionally the Sandy Bridge memory slots are designed to run at 1.50v, here is my memory suggestion.

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231440

Here's all the Intel motherboard specs on your 2nd Generation Sandy Bridge Intel CPU.

http://www.intel.com/content/www/us/en/processors/core/CoreTechnicalResources.html

Scroll down to the 2nd Generation section and Note Memory speed the Sandy was designed to run and also note the DDR3 slot voltage.

To sum up what I am telling you:

If you'll be satisfied running your 2600K at 4.5ghz then disregard my input, however if you'll be considering overclocking approaching the 5ghz clock, which many have done, but with a 1333mhz memory speed, then you might want to listen to what I'm telling you!

I'm running a 3rd generation 3770K 5ghz overclock, and I am not overclocking my memory controller which runs at 1600mhz , you can check my CPU-Z validation to the right and see for yourself.

My 2nd Generation 2700K ran 2133mhz just fine at a 4.5ghz overclock, but could not run 2133mhz memory speed at 5ghz and beyond and I overclocked it as far as 5.3ghz at a 1333mhz memory speed.

So there it is!

Note the clocks others are running with their memory suggestions!

cococabana · Mar 15, 2014

Wow, that is an amazingly detailed answer . I get everything perfectly thanks! is it possible to downclock the Ripjaws 1600Mhz and lower the timing as well? I mean it is my understanding that RAM can be overclocked at the cost of latency? Since i honestly only have the option between Kingston Hyper X Black and Ripjaws.

4Ryan6 :

@cococabana

There is a difference between the Sandy Bridge and Ivy Bridge, first off any memory speed past 1333mhz is overclocking the Sandy Bridge CPU memory controller which does not matter if you're settling for a less than 5ghz overclock by increasing the CPUs Vcore and Multiplier.

The Ivy Bridge memory controller is overclocked with any speed past 1600mhz, my point is overclocking the CPUs memory controller adds heat to the CPU which in turn limits the top end of the CPUs possible overclock!

But we're talking about your 2600K so I suggest 1333mhz at CAS 7 to give you a rock solid memory foundation by not overclocking the CPUs memory controller and you will be able to reach a higher stable CPU raised multiplier overclock, without adding that extra heat.

But if you'll be settling for a 4.5ghz overclock then disregard what I am telling you!

Additionally the Sandy Bridge memory slots are designed to run at 1.50v, here is my memory suggestion.

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231440

Here's all the Intel motherboard specs on your 2nd Generation Sandy Bridge Intel CPU.

http://www.intel.com/content/www/us/en/processors/core/CoreTechnicalResources.html

Scroll down to the 2nd Generation section and Note Memory speed the Sandy was designed to run and also note the DDR3 slot voltage.

To sum up what I am telling you:

If you'll be satisfied running your 2600K at 4.5ghz then disregard my input, however if you'll be considering overclocking approaching the 5ghz clock, which many have done, but with a 1333mhz memory speed, then you might want to listen to what I'm telling you!

I'm running a 3rd generation 3770K 5ghz overclock, and I am not overclocking my memory controller which runs at 1600mhz , you can check my CPU-Z validation to the right and see for yourself.

My 2nd Generation 2700K ran 2133mhz just fine at a 4.5ghz overclock, but could not run 2133mhz memory speed at 5ghz and beyond and I overclocked it as far as 5.3ghz at a 1333mhz memory speed.

So there it is!

Note the clocks others are running with their memory suggestions!

4Ryan6 · Mar 16, 2014

cococabana :

Provide the exact Brand and Model# memory modules you decide to go with and I'll give you some 1333mhz timings suggestions and we'll see what works for you.

In your opening post I would go with the G-Skill Ripjaws 1600mhz you said 8gb kit so that should be 8gb = 2 x 4g modules = the 8gb, is that correct?

cococabana · Mar 18, 2014

4Ryan6 :

cococabana :

Provide the exact Brand and Model# memory modules you decide to go with and I'll give you some 1333mhz timings suggestions and we'll see what works for you.

In your opening post I would go with the G-Skill Ripjaws 1600mhz you said 8gb kit so that should be 8gb = 2 x 4g modules = the 8gb, is that correct?

Yup thats correct. Went with the G.Skill Ripjaws X 1600 Mhz 4GB x2. Will be getting the Mobo/PSU/HDD/Casing in a few days too

Tradesman1 · Mar 18, 2014

Will be waiting to hear how it goes

cococabana · Mar 19, 2014

Tradesman1 :

Absolutely

but it will probably be a week or more before i finish the build.

i7 2600K Overclocking RAM Help

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