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Corsair CMX4GX3M2A1600C9 XMS3 4GB (2x2GB) DDR3 1600 Mhz CL9 Performance Desktop Memory Kit
|Price:||£29.56 & FREE Delivery in the UK. Details|
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- 4GB memory kit (2 x 2GB) for use with Dual Channel DDR3 Intel Core i5 and Core i7 processors
- Latency of 9-9-9-24 for maximum reliability and performance
- Intel XMP (Extreme Memory Profile) Support
- XMS Heat Spreader
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Corsair’s mainstream memory solution for Intel’s new Core i5 and Core i7 dual channel DDR3 processors. The XMS3 family is Corsair’s mainstream line of performance DDR3 memory. These modules allow users to experience outstanding memory performance and stability. Available in Corsair’s new XMS heat spreaders, each module is built using carefully selected RAMs.
This 4GB twin kit memory solution has been designed specifically to support the Intel Core i5 and Core i7 dual channel memory DDR3 solutions. This solution runs at an incredibly fast 1600MHz at CAS latency of 9-9-9-24. So not only do you get to run your Intel Core i5 or Core i7 dual channel memory system at 1600MHz but with these tight Latency timings your system performance will rock.
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Top Customer Reviews
This 16GB XMS Memory kit (2x8GB memory modules) is very good but the spec is not totally accurate and there should be a disclaimer to this effect. You even see a bold statement "Outrageously fast 1600MHz performance using 16GB of memory" with 1.5V spec shown a few lines below on the same page (unless Amazon corrected this as I have sent them a note pertaining to what I describe here) but this must be qualified.
Corsair's own website indicates that the 1600Mhz clock rate is achieved at 1.65V which is quite different from the 1.5V indicated here under Product Specifications. If you, like me, use this memory with Intel new technology processors (the latest i5 and i7 CPUs), then the DDR3 memory is controlled by the host processor using an on-chip Memory Controller Hub (MCH). According to Intel's spec, the on-chip MCH was designed to support DDR3-1333/1600MHz memory at 1.5V, and any memory voltage above 1.5V can shorten the life-span of the processor or even damage it. Hence, operating the memory module at 1.65V should be avoided.
This will not be an issue if an external memory controller is used (which may mean using with older processors), but I haven't looked into such scenarios as they don't apply to me; my interest is with systems using i5-3570K and i7-3770K processors (and many others that share the same Chipset such as the Ivy Bridge chipsets, e.g., Z77).
I think there should be a disclaimer for customers using this memory kit with Intel processors that use on-chip MCH for memory control (I think all Ivy Bridge and Sandy Bridge microarchitectures, perhaps earlier ones, use the MCH).Read more ›
Timings are 9-9-9-24.
Windows 7 experience score is 5.9 (1x4GB module)
For those that are interested this is coupled with a Intel i5 2500 1155 CPU, Intel DH67CL Motherboard and powered by a 650w Ocz modular power supply.
As my motherboard ran the memory at a default 1333MHz (same as the onboard 1Gb/128MB sideport) I overclocked the DIMMs to run at their rated maximum speed 1600MHz, which can be simply achieved by either:
1. Changing the memory ratio from 6.66x to 8x
2. Or keeping the 6.66x memory ratio and increasing the HT Link from 200 to 240 MHz (HT Link bus speed becomes ~2400MHz)
This 2nd option requires further modifications as it is overclocking the system not just the memory, but this is best if you have a Black Edition AMD CPU as they have loads of headroom for overclocking.
When the memory is running at 1600MHz it is best to ensure the Memory SPD Timings/Latencies are set to CL 9
ie. 9-9-9-24 this will optimise the system memory stability. Often you may need to change the Command Timing/Rate from 1T (fine at slow speeds) to 2T.
The performance coupled with the lifetime warranty makes this is a 5 / 5 Star product.
As I write this I've only been using the new RAM for barely two hours and the PC seems normal. On the RAM itself, the sticks say 1600mhz though in the BIOS they seem to be at 1333mhz. I don't see what difference changing these values will do. I'll see how it goes.
I know to some people fitting RAM is the easiest job in the world, but I just thought I'd share what I went through, in case there are other 'newbies' out there as nervous as I was about fitting RAM. If I can do it, so can you!
Most Recent Customer Reviews
First one died on us so they sent a replacement hope this last.longer then the first one.Published 1 month ago by allen Brantner
What's to say? Doesn't what it says on the tin.Fitted easily and bang - more RAM!
This was an add-on to 2 x 4Gb Corsair XMS3 which had a fractionally lower latency specs... Read more
This was sooooo good I actually bought 2 of these. When I opened my desktop I had 8GB or RAM running over 2 x 4GB cartridges. Read morePublished 1 month ago by Paul C
Computer memory is a tricky matter. In the past I have tried using memory which appeared to fit the spec and was cheaper than the "official" memory from the pc supplier -... Read morePublished 2 months ago by Frank Gerschwiler