Fastest 1866 sodimms? This it?

Was looking around and found Kingston are making a CL9 1866mhz sodimm kit. Unfortunately only 2x2GB!
ME-KN2X18C9x2 Kingston KHX1866C9S3K2/4GX HyperX 2x 2GB kit 204 pin so-dimm memory, support Intel XMP (eXtreme...

Is there any 1866mhz CL9 2x4GB kits around or is this it? 4GB seems a tad too small. Was thinking of trying it in the old M15x to see if it runs at CL7 at 1333mhz but want more than 4GB!

 

There's these:

Amazon.com: Crucial Ballistix Sport SODIMM 16GB Kit (8GBx2) DDR3 1866 MT/s (PC3-14900) CL10 @1.35V 204-Pin Memory BLS2K8G3N18AES4: Computers & Accessories
Amazon.com : Kingston HyperX Plug n Play 8 GB Kit (2x4GB Modules) 1866MHz DDR3 SODIMM Notebook/Netbook Memory 8 Dual Channel Kit (PC3 15000) 204-Pin KHX1866C11S3P1K2/8G : Electronics
Amazon.com: HyperX 16GB Kit 1866MHz DDR3 PC3-14900 Non-ECC CL11 1.35V Low Voltage SODIMM Notebook Memory DDR3 1866 KHX18LS11P1K2/16: Computers & Accessories
Amazon.com: Corsair Vengeance 16 GB (2 x 8 GB) DDR3 1866 MHz (PC3 15000) Laptop Memory CMSX16GX3M2A1866C10: Computers & Accessories

But I don't think any 8GB kits or larger are CL9.

 

Yeah you confirm my suspicions. I believe though the kit is fairly new i couldn't find it 6 months ago. Perhaps an 8GB CL9 kit will be release in the near future.

 

Well by this time next year DDR4 should be making inroads at much faster speeds and latencies. I don't think you'll see much faster than CL10 with 8GB DDR3 modules at 1866MHz.

 

Yeah you are probably right! Let's wait and see.

 

No idea. I have gotten kingston before. It works

 

To be honest each year we wait everything tends to get faster.

 

The hunt for the holy grail? Really CL9 vs CL10? I guess I am just as bad as you guys but come on. Splitting hairs. Short of being a programmer and making individual requests does it matter? Once the request is in play does it not matter? Or am I obtuse?

 

You're right. It really doesn't matter, except with IGP performance. Even then CAS9 vs 10 or even 11 will result in a 3-5% change in performance.

 

Not splitting hairs at all. The M15x can't run ram faster than 1333mhz. Standard ram runs at CL9 which means any upgrade on the ram that might bring a small tangible upgrade in speed would have to be CL7 or lower.

1333mhz ram at CL7 would be equivalent to fairly good 1600mhz ram at perhaps CL9! Something I never could upgrade to. I know the increase in speed is small but I am also on the hunt to expand to 16GB as I do some work that requires more than 8GB. It would be nice to expand and increase speed at the same time therefore

With DDR4 around the corner though 2x8GB kits of CL9 1866mhz or CL10 2133mhz ram is unlikely.

 

Speed and latency of RAM makes no difference in 99.9% of applications, games, utilities. At least if you're comparing 1333 vs 1600 vs 1866. If it's like 1066 vs 2133 or CAS 7 vs CAS 15 then yes, there will likely be a somewhat noticeable and measurable difference. For all practical purposes where it matters is with integrated graphics where it's graphics RAM bandwidth limited, so faster RAM helps improve performance to a point.

 

Pretty sure there are people claim that they can feel the performance boost! It is just more eh "snappy".

 

I didn't notice any difference when going from 1333 to 1600, but when moving straight to 1866 it did make a bit a change, that snappiness was surely there.

 

I noticed it when I was able to run at 2133MHz from 1600MHz, but it's not like one of those things that once you go back to the "slower" tech that it feels like molasses.

 

The issue with SODIMM RAM is that the higher density sticks need slightly looser timings (which is why 1866mhz Cl9 is only achievable with 2gb) because you cannot easily increase the voltage like you can on desktops. To be honest with you, all intel CPUs since the Nehalem days have not responded noticeably to low latency RAM due to the excellent caches Intel puts on die so rather, high bandwidth will give you a better performance boost.