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Corsair CMX4GX3M2A1600C9 XMS3 4GB (2x2GB) DDR3 1600 Mhz CL9 Performance Desktop Memory Kit
|Price:||£39.97 & FREE Delivery in the UK. Delivery Details|
|You Save:||£5.02 (11%)|
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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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This item Corsair CMX4GX3M2A1600C9 XMS3 4GB (2x2GB) DDR3 1600 Mhz CL9 Performance Desktop Memory Kit
|Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping|
|Computer Memory Size||2 GB||2 GB||4 GB||8 GB||2 GB||4 GB|
|Item Dimensions||12.06 x 18.67 x 0.76 cm||12.06 x 18.67 x 0.76 cm||7.62 x 10.16 x 2.54 cm||1.68 x 14.94 x 13.67 cm||10.16 x 17.78 x 1.27 cm||12.06 x 15.24 x 0.64 cm|
|Item Weight||36 grams||36 grams||113 grams||59 grams||118 grams||40 grams|
|Memory Clock Speed||1,600 MHz||1,333 MHz||1,600 MHz||1,600 MHz||1,600 MHz||1,333 MHz|
|Memory Speed||1,600 MHz||1,333 MHz||1,600 MHz||1,600 MHz||1,600 MHz||1,333 MHz|
|Size||4GB (2x2GB)||—||8GB (2x4GB) 1600Mhz||8 Gb||—||4GB (1x4GB)|
|System RAM Type||DDR3 SDRAM||DDR3 SDRAM||DDR3 SDRAM||DDR3 SDRAM||DDR3 SDRAM||DDR3 SDRAM|
|Voltage||1.65 volts||1.5 volts||1.5 volts||1.5 volts||1.5 volts||1.5 volts|
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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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).
Update - 2013-02-18
This memory kit is exchanged for Corsair 16GB 1600MHz CL10 DDR3 Vengeance Memory Kit which works as expected at 1.5V. Thank you Amazon.
Update - 2013-03-26
Corsair's website now indicates 1.5V instead of the 1.65V. As detailed under Comments link below, thanks to V. E. Brindle for pointing out the website correction.
When you have installed them, it's best to run a Microsoft Memory Test (just type 'Memory' into the MS search box and click on the memory test app. When it come up click the top layer of hypertext. Your PC will restart and run the test).
If you ever get bad RAM, you will find your PC gives you a lot of BSODs (blue screen crashes). The key to diagnosing bad RAM is that these crashes will be for many different reasons (i.e not just IQRL alert.. IRQL_NOT_LESS_OR_EQUAL bug check has a value of 0x0000000, but for all sorts of reasons). It is then best to download the USB version of MEMTEST86 (it's free). It comes with instructions and free software to make a bootable MEMTEST86 USB. Then test each stick of RAM in by itself in each RAM slot (to make sure its not a motherboard fault. MEMTEST86 will find any errors and you can them raise a returns case at Corsair (takes about a week for them to send you new ones).
But hopefully yours will be faultless!
Then when the RAM was returned to me, the note now says that I only have 30 days warranty on these repaired/replacement chips. So some memory I bought that was less than a year old broke...they were replaced by Corsair for free...but now I only have 30 days warranty on them. Sure enough, it's 6 months later and the same chips that were replaced under warranty have now broken again and I cannot have them RMAd because it's beyond the 30 days.
So their "lifetime warranty" is a pile of dog poop since if you ever need to use that lifetime warranty it then becomes 30 days warranty. Even if your product is still under 1 year old. Considering the fact that now 4 sticks of these have broken , I think i'll be avoiding Corsair products from now on and sticking with a well known brand and one that won't try to screw me out of my warranty.