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OCZ Flex II XLC PC2-9200

Going For 4GB: DDR2-1066 Kit Round-Up
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OCZ is one of the most popular enthusiast memory brands and has always been on top of the memory speed race, along with Corsair and a few others. There are lots of interesting memory products to be found on the OCZ Web site, but we have to say that there are too many memory products and it has become rather difficult to differentiate them from each other : Gold, Titanium, Platinum, Reaper, Limited Edition, Fatal1ty, Flex XLC, Crossfire or Nvidia SLI-Ready, Performance Series, Vista Special…

Specifications

Be that as it may, we once again received an attractive product for review : the Flex II XLC series using memory capable of running DDR2-1150 speeds reliably. This equals DDR2-9200, and it is slightly more than arch rival Corsair offers with its PC2-9136 DIMMs. The memory comes in a nice, stylish and adequately cool retail box. The Flex II XLC PC2-9200 DIMMs are specified for 2.1 V operation at the maximum DDR2-1150 speed and at CL5-5-5-18 timings. A maximum of 2.15 V is possible utilizing OCZ’s enhanced voltage protection feature, which allows running the memory at faster speeds without voiding the warranty.

Liquid Cooling On Board

Flex II XLC is the second-generation memory that comes equipped with a cooling device ready for liquid cooling solutions. While the Flex XLC DIMMs had one cooling intake and one outlet for the entire DIMM, Flex II XLC provides two different cooling circuits for both sides of the memory modules. As a consequence, the coolant flowing through the device only has to cool eight memory chips instead of all 16 on both sides of the DIMM. 

While we’re confident that this solution provides maximum cooling for the memory chips, it also requires maximum space on the motherboard. You will only be able to insert more than two DIMMs if you have a board that comes with six instead of four DIMM sockets. OCZ adds all necessary adapters (1/8” and 3/8” barb adaptors) for hooking up the Flex II XLC DIMMs to your liquid cooling solution. We’re just not sure if a total of 16 interfaces—eight on the adapters to the main tubes and eight more on the DIMMs—is really a good thing, a they all increase the potential risk for leaks.

You do not have to install a liquid cooling solution to operate the Flex II XLC DIMMs—we did not do that, for the sake of keeping the comparison simple. But we didn’t try to reach maximum clock speeds by all means possible either, meaning increasing the voltage to even higher levels. Thanks to the massive heat sinks on the top of the DIMMs, you can also apply conventional airflow cooling. OCZ provides protective covers, which also act as heat sinks, if you don’t want to use any liquid cooling solution at all.

Overclocking

We achieved the specified DDR2-1150 speed applying the nominal 2.1 V voltage, but couldn’t go much higher. Once we switched to 2.3 V memory voltage it became possible to overclock these modules reliably up to DDR2-1180 speed. This is as far as we could go with the Corsair Dominator DIMMs at the same voltage, and only Chaintech’s Apogee memory managed to reach a bit more clock speed. Yet these differences are almost negligible.

More Articles

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In Search of True DDR2 Bleeding Edge Memory

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  • -1 Hide
    ChopstickNINJ4 , September 22, 2008 3:45 AM
    Hmm, then this is a really good deal then:

    kingston hyperx for $75 with shipping
    http://www.newegg.com/Product/Product.aspx?Item=N82E16820104060

    But even then, prices in the article seem rather high don't they? Just wait for a rebate on the RAM and get it then, hell OCZ has had a new rebate continually for the last 3 months.
  • 1 Hide
    kitsilencer , September 22, 2008 3:52 AM
    I don't know about this...

    What with Nehalem, the X58 and DDR3, upgrading DDR2 seems like a cheap and temporary thrill.
  • 0 Hide
    Anonymous , September 22, 2008 4:19 AM
    What about this memory kit; I have it and love it...

    http://www.patriotmem.com/products/detailp.jsp?prodline=5&catid=2&prodgroupid=65&id=576&type=1

    Runs rock stable on my 780G based board and this kit can be had for as little as $90. Was there some reason this memory was not included in the tests?
  • 0 Hide
    SenseR , September 22, 2008 5:40 AM
    I use the Kingston mem on 1.066MHz with 4-4-4-12 timings on 2.2V and it is running stable for eight months now. Deffo a go.
    SenseR.
  • 4 Hide
    doomsdaydave11 , September 22, 2008 5:57 AM
    lol I love how DDR2-667 performs within .2% of DDR3-1066 :D 
    For me, DDR2-800 seems like a decent way to go. It can be found online for $60 for a 2x2GB set. I'm just rolling with a basic set of 2x2GB DDR2-800 XMS2 from Corsair. It runs fairly fast and cool; haven't tried overclocking them yet, though.
  • 1 Hide
    KILLER_K , September 22, 2008 6:37 AM
    They are all overclocked 800mhz ics amnyway so it doesn't matter. You can but pc6400 modules that do 1066 - 1200 with ease these days. Tom should have picked specific ram ic's like micron d9's , promos, and a few other good ones and compared the overclocking that way.

    Good Day
  • 5 Hide
    Anonymous , September 22, 2008 12:46 PM
    Wow that could have actually been a useful article if only you had done the test on an AMD system as well...
  • 2 Hide
    Ryun , September 22, 2008 2:04 PM
    devoncokeWow that could have actually been a useful article if only you had done the test on an AMD system as well...


    I was thinking the exact same thing. I think it's pretty well known, at least here, that you see little difference between DDR frequencies when they're above the Bus speed (for those processors still using the north bridge as a memory controller).

    I would really like to see comparisons between DDR2 memory with a Phenom. I was looking for this the other day and turned up with little direct comparisons of DDR2-800 vs 1066. It'd be a really good article to read, and one that I think Tom's should jump on. It'd also give people a chance to see what an IMC can do and maybe help some people out when they're picking out DDR3 for their Core i7's.
  • 2 Hide
    MadHacker , September 22, 2008 3:41 PM
    I think writers @ Toms has to learn what Overclocking percentage means...
    100% overclock is running it twice as fast as spec.
    so running at 106% overclock is more then twice as fast?
    I think their concept of overclocking percentages is mixed up.
  • 0 Hide
    darckeen , September 22, 2008 3:55 PM
    bleh, these are the best high clock ddr2s on the market. guess they don't qualify since they are 1100mhz lolz.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16820231194
  • 0 Hide
    Morphuess , September 22, 2008 5:27 PM
    ChopstickNINJ4Hmm, then this is a really good deal then:kingston hyperx for $75 with shippinghttp://www.newegg.com/Product/Prod [...] 6820104060But even then, prices in the article seem rather high don't they? Just wait for a rebate on the RAM and get it then, hell OCZ has had a new rebate continually for the last 3 months.

    That isn't the same Kingston ram featured in this article. The timing for that RAM is 7-7-7-20, although it is very affordable. I'm thinking of picking up a set of it myself.
  • 0 Hide
    hellwig , September 22, 2008 6:14 PM
    According to OCZ's own website:
    OCZImportant Note: Due to the width of the heatsink, Flex II memory kits cannot be installed on motherboards that require the modules to be inserted in sockets side by side. A maximum of one Flex II dual channel kit will fit on any motherboard with dual sockets.

    I guess it's a good thing this review was done on an Asus board with staggered memory channels (A->B->A->B). If your motherboard groups your memory channels (like my old Gigabyte and Asus boards, i.e. A->A->B->B) then these modules will be worthless as they will be running in single-channel (cause you couldn't put two modules on the same memory channel). I think this fact alone means they are worthless as performance memory. You'd get better performance out of 667-dual channel if you have a mother board with grouped memory channels.
  • -2 Hide
    Anonymous , September 22, 2008 6:36 PM
    there's nothing interesting with memory technologies since before DDR2 came out. now, the FSB and RAMs had catch up with the CPU not like before.
    but there's an interesting comment i've read above. Why not test a quad core with a heavily threaded application, i'm sure there will be big differences in memory/ram speeds.
  • 2 Hide
    eodeo , September 22, 2008 7:27 PM
    ddr2-800 is as fast as it gets with sane fsb400. overclocking higher than fsb 400, ddr2-800 is only usefull untill ddr2-1066, fsb 533.

    And like said before, most ddr2-800 kits go to 1066 with relative ease.

    EVERYTHING above fsb 533/ ddr1066 is useless. Face it, acknowledge it, learn it.

    Daredevils that push their system to 600+fsb do so for a very short of time just to prove that they can. Not many of those and usefulness of these test is debatable.
  • 4 Hide
    Anonymous , September 22, 2008 8:21 PM
    Where the heck is G.Skill... Would beat all of these in clean..

    Heppy customer of G.Skill for several years..
  • 0 Hide
    LVDAX , September 22, 2008 10:59 PM
    Quote:
    While 4 GB of RAM cannot be fully utilized on 32-bit operating systems such as Windows XP windows xp and Windows Vista 32, you’ll still get between 3.3 and 3.7 GB of effective memory capacity.

    Ummm... Am I the only one that knows about PAE???


    Besides the fact that you didn't do all your homework the article was very well written and informative. Thanks
    ~Cheers

    P.S. Next article idea... PAE and how it home users can benefit from it. BTW i do not recommend PAE if you use non-standard devices as it can have issues with drivers.
  • 0 Hide
    eodeo , September 23, 2008 12:13 AM
    What is PAE? I dont know about it. Please share :) 
  • -1 Hide
    JonathanDeane , September 23, 2008 1:00 AM
    eodeoWhat is PAE? I dont know about it. Please share


    PAE stands for Physical Address Extension or something like that :)  basically its a software trick that reminds me of paged memory, I also think that it requires programs that are designed to use PAE in other words no games will make use of it and only a handful of programs make use of the added RAM.
  • 0 Hide
    eodeo , September 23, 2008 1:09 AM
    so... its useless. ok

    I really cant think of a single reason one shouldn't use win xp x64 instead of win xp 32bit- save for 16bit app support (think old dos games, that can be run on dosbox anyway..)
  • 0 Hide
    JonathanDeane , September 23, 2008 1:30 AM
    eodeoso... its useless. ok



    No for some programs it is probably really cool :)  I imagine they use it allot for server type things or large data bases. Please note that I am no expert by any means when it comes to PAE lol
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