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  1. #1
    Joined
    Jan 2009
    Posts
    66

    Intel i7 Processor and Ram

    I thought the only options regarding Ram and the i7 were 3 GB/6GB (multiples of 3).

    I see on Best Buy's website a i7 computer with 4GB of Ram! What is the deal?
    http://www.bestbuy.com/site/olspage....=1218046802234

  2. #2
    Joined
    Mar 2003
    Location
    FL
    Posts
    2,753

    Re: Intel i7 Processor and Ram

    You don't have to run tri channel with i7, actually dual channel mode operates at a lower latency than tri channel which can improve performance and if you run four sticks of ram I think it steps down to single channel mode.
    i7 Beast: Asus P6T Deluxe, Intel i7 920 21x191 (4000) HT on 1.3875v, Swiftech GTZ/D5/BIX2
    6GB (3x2GB) G.Skill pi Black DDR3 1600, ECS 9600GT
    CM STACKER 810, PC Power & Cooling Silencer 750


    i7 Game: Asus P6T, Intel i7 920 20x180 (3600) HT on 1.275v, TRU-120
    6GB (3x2GB) G.Skill DDR3 1333 7-7-7-18, MSI GTX260 OCv2, Dell 3007WFP LCD
    CM STACKER 830, PC Power & Cooling Silencer 750


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  3. #3
    Joined
    Feb 2005
    Location
    Vegas
    Posts
    1,972

    Re: Intel i7 Processor and Ram

    Quote Originally Posted by highoctane View Post
    You don't have to run tri channel with i7, actually dual channel mode operates at a lower latency than tri channel which can improve performance and if you run four sticks of ram I think it steps down to single channel mode.
    It has been proven in several benchmarks that running in anyhing but tri-channel degrades performance.
    Here is the PcPer Bench, Check around the web for others and you will see similar results.


    BF3 Dino:
    i7 2600k, ASUS P8Z68-V Pro, 8GB Corsair, X-25M 120GB, WD 300GB Raptor, 2xEVGA GTX570HD 2.5GB, X-fi Titanium, Antec 1200W.
    Monster: i7 930, MSI X58 Platinum, 9GB Corsair, WD 74GB Raptor, WD 2TB, Palit GTX460 1GB, PCP&C 750W.
    Beast: AMD4400+, Asus A8N-SLI Deluxe, 2GB Corsair, 2x 1TB WD Green Raid0, 2TB WD Green, KFA2 9600GT, Dynex 500W.
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  4. #4
    Joined
    Mar 2003
    Location
    FL
    Posts
    2,753

    Re: Intel i7 Processor and Ram

    Yeah but thats a memory bandwidth benchmark, its purpose is to show bandwidth but in reality the average differences are somewhat negligible from what I have seen.
    I'm not saying tri channel doesn't have its merit but a i7 running in dual channel is not what I would call degraded by any means.


    http://xtreview.com/review232.htm


    EDIT: Quote from tweaktwon:
    "We have seen today that dual channel memory on the Core i7 is more than enough to keep it fed with bandwidth, especially since the CPU and memory are communicating with each other directly. There is very little lost bandwidth and it makes better use of all of the dual channel memory than the triple channel memory. However, with Intel’s plans to increase speeds and allow heavier memory usage, especially with IGP based systems, the extra bandwidth will end up being welcomed.

    Our moral to this story is if you’re planning on a Core i7 system, don’t just go out and buy triple channel memory straight away. If your budget allows for it, then by all means more memory will help, especially in Vista. However, with today’s results you can see that dual channel memory is more than capable of keeping up with the Core i7."

    EDIT: Anandtech: http://www.anandtech.com/cpuchipsets...spx?i=3448&p=5
    Last edited by highoctane; 02-10-2009 at 11:35 PM.
    i7 Beast: Asus P6T Deluxe, Intel i7 920 21x191 (4000) HT on 1.3875v, Swiftech GTZ/D5/BIX2
    6GB (3x2GB) G.Skill pi Black DDR3 1600, ECS 9600GT
    CM STACKER 810, PC Power & Cooling Silencer 750


    i7 Game: Asus P6T, Intel i7 920 20x180 (3600) HT on 1.275v, TRU-120
    6GB (3x2GB) G.Skill DDR3 1333 7-7-7-18, MSI GTX260 OCv2, Dell 3007WFP LCD
    CM STACKER 830, PC Power & Cooling Silencer 750


    AMD: Biostar 790GX A2+, PII X4 940BE 17x200, Freezer 64 Pro
    4GB (4x1GB) Ballistix Tracer DDR2 800, Powercolor 4850
    Corsair VX450

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