- DDR3 1333 (PC3 10666)
- Timing 7-7-7-21
- CAS Latency 7
- Voltage 1.50V
Received two different models
04/20/2013
This review is from: G.SKILL Ripjaws Series 8GB (2 x 4GB) DDR3 1333 (PC3 10666) Desktop Memory Model F3-10666CL7D-8GBRH
Pros:
Memory works in dual channel even though I received ram with two different bandwidths, timings and model numbers.
Cons:
Would not work with my current ram which is why i bought it.
Overall Review:
I use CPU-Z to test all the memory i buy. I bought this to upgrade my system which had Gskill 4GB dual channel kit 2 x F3-10666CL7D-2GBRH 667mhz 7-7-7-21. (asus p7h55m-d evo core i5 661 clarkdale) It should work fine, right? seeing as how its the same model and specs and everything just different sizes... Well it didn't. With all 12 GB installed the system lags horribly, takes forever to post and get to DT and CPU usage goes up to the ceiling causing instability and lag. It does still boot though (sometimes) so i guess that's something.... CPU-Z showed all the ram at CL9 and around 670mhz.. odd...
After that I tried just the new ram 8GB alone and it works fine only its at ~690mhz and 9-9-9-24-180-2T (not the 667mhz 7-7-7-21 advertised) and upon further inspection i realized that I the model and specs of one of the 4GB sticks was correct:
PC3-10700 (667mhz) 7-7-7-20 Gskill F3-10666CL7-4GBRH
While the other stick was:
PC3-12800 (800mhz) 9-9-9-24 Gskill F3-12800CL9-4GBXL
which is why i get the slower timings and the slightly elevated DRAM freq and I suspect is why i cannot use this with my existing ram. OH WELL. I got faster ram for the price of slower ram BUT at the expense of not being able to use my other 4GB which i wanted to do. Still not sure how it works in dual channel though because i thought the ram had to be the same for that.
The worst part is that I'm not sure if I'll be able to RMA this item. Have to crack the case open yet again to see if they are even labeled correctly. I'm hoping the labels show the difference because i'm not sure newegg is going to just take my word that this is wrong or even know what CPU-Z is. Sigh....
Manufacturer Response:
.
Dear Customer
We can surely help you with this. Memory can operate in dual channel as long as two or more modules can communicate properly. This is why it is imperative to have perfectly matching memory out of a single kit. Each memory kit is pre-matched, tested, and guaranteed from factory to be able to communicate smoothly in multi-channel motherboards. When mixing two seperate kits, it is fine to attempt multiple settings for both kits to be stable, but keep in mind there are instances the two kits will not work at all in a single system. In your particular case, it is strange one module is showing a different value. Feel free to send the memory in for RMA exchange and a replacement kit should be consistent.
To determine whether the new kit is causing a problem, test it at the rated specifications. DDR3-1333 CL7 is above standard, so it is necessary to manually input DRAM settings or enable the enhanced performance profile (XMP) for the system to recognize the performance values of the RAM. The memory should be stable with one, or both modules installed and set to DDR3-1333 7-7-7-21 1.50V. If you encounter stability issues, please feel free to contact the G.Skill support team. They are readily available to assist you, and make sure your computer is running fast and smooth with G.Skill RAM.
Thank you
GSKILL SUPPORT
Quality and customer service are our top priorities.
Tech Support Email: ustech@gskillusa.com
RMA Dept Email: rma@gskillusa.com
G.Skill Forum: http://www.gskill.us/forum/
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- john g.
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Verified Owner
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Owned For:
1 week to 1 month
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