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Thread: So I bought a 7950 GX2

  1. #1
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    So I bought a 7950 GX2

    After much debate I bought the evga 7950 gx2 about 10 minutes ago, should be on my doorstep in a few days. And finally my new system will be finished.

    Sad that its probably already outdated, but I think it will serve me well

    170 Opteron
    ASUS A8N32-SLI
    2gb Corsair XMS 3500LL Pro (+1gb generic)
    550W Sunbeam Nuuo PSU
    74gb Raptor
    100gb Maxtor
    Soundblaster Audigy 2 ZS
    WiFi
    Pioneer 16x dual layer dvd-rw
    etc etc all the standard stuff

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    Quote Originally Posted by ilikeoatmeal
    (+1gb generic)
    whats that?

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    The King of Vague Steve B's Avatar
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    generic = no-name
    just standard stuff like Corsair Value Select, but without the "Corsair Value Select" bit

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    YUKIKAZE arthurleung's Avatar
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    • arthurleung's system
      • Motherboard:
      • Asus P5E (Rampage Formula 0902)
      • CPU:
      • Intel Core2Quad Q9550 3.6Ghz 1.2V
      • Memory:
      • A-Data DDR2-800 2x2GB CL4
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      • 4x1TB WD1000FYPS @ RAID5 3Ware 9500S-8 / 3x 1TB Samsung Ecogreen F2
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      • Corsair VX450
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    You'll be better off taking off those generic stuff as the ram will be able to run tighter timings + 1T.
    Workstation 1: Intel i7 950 @ 3.8Ghz / X58 / 12GB DDR3-1600 / HD4870 512MB / Antec P180
    Workstation 2: Intel C2Q Q9550 @ 3.6Ghz / X38 / 4GB DDR2-800 / 8400GS 512MB / Open Air
    Workstation 3: Intel Xeon X3350 @ 3.2Ghz / P35 / 4GB DDR2-800 / HD4770 512MB / Shuttle SP35P2
    HTPC: AMD Athlon X4 620 @ 2.6Ghz / 780G / 4GB DDR2-1000 / Antec Mini P180 White
    Mobile Workstation: Intel C2D T8300 @ 2.4Ghz / GM965 / 3GB DDR2-667 / DELL Inspiron 1525 / 6+6+9 Cell Battery

    Display (Monitor): DELL Ultrasharp 2709W + DELL Ultrasharp 2001FP
    Display (Projector): Epson TW-3500 1080p
    Speakers: Creative Megaworks THX550 5.1
    Headphones: Etymotic hf2 / Ultimate Ears Triple.fi 10 Pro

    Storage: 8x2TB Hitachi @ DELL PERC 6/i RAID6 / 13TB Non-RAID Across 12 HDDs
    Consoles: PS3 Slim 120GB / Xbox 360 Arcade 20GB / PS2

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    Senior Member ExceededGoku's Avatar
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    it will also screw up any potential overclocking headroom
    Core 2 Duo E6600 @ 3.2Ghz (400Mhzx8) 1.52V (set in bios, 1.47v real) | 4GB GeIL PC6400 4-4-4-12 | Gigabyte DQ6 @ 1600Mhz | HD2900XT 1GB | Enermax Infiniti 720W | Silverstone TJ07-B with custom watercooling | BenQ FP241WZ
    3dmark05 - 13140 | 3dmark06 - 6698 | SuperPi 1M - 15s

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    dual channel is the main thing, my overclocks dont change with 4 dimms

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    Senior Member ExceededGoku's Avatar
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    no what I'm trying to say is that the generic ram won't be capable of the speeds of the corsair and so his overclocks won't be anywhere near his maximum.
    Core 2 Duo E6600 @ 3.2Ghz (400Mhzx8) 1.52V (set in bios, 1.47v real) | 4GB GeIL PC6400 4-4-4-12 | Gigabyte DQ6 @ 1600Mhz | HD2900XT 1GB | Enermax Infiniti 720W | Silverstone TJ07-B with custom watercooling | BenQ FP241WZ
    3dmark05 - 13140 | 3dmark06 - 6698 | SuperPi 1M - 15s

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    The King of Vague Steve B's Avatar
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    who said anything about overclocking?!

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    Senior Member ExceededGoku's Avatar
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    I did
    Core 2 Duo E6600 @ 3.2Ghz (400Mhzx8) 1.52V (set in bios, 1.47v real) | 4GB GeIL PC6400 4-4-4-12 | Gigabyte DQ6 @ 1600Mhz | HD2900XT 1GB | Enermax Infiniti 720W | Silverstone TJ07-B with custom watercooling | BenQ FP241WZ
    3dmark05 - 13140 | 3dmark06 - 6698 | SuperPi 1M - 15s

  10. #10
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    Quote Originally Posted by ilikeoatmeal
    170 Opteron
    its a crime not to overclock it

  11. #11
    Moderator chuckskull's Avatar
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    • chuckskull's system
      • Motherboard:
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    I'll whip him if he doesn't OC that 170. Anyway theres not much point in having 3500LL RAM if you dont intend to clock.

    In which case I'll swap my COrsair VS for it, cos I intend to hammer my new 4600+

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    Yeah I'll definitely be overclocking. I just put that extra 1 gig in the description for the heck of it. I wasn't sure whether or not I'd be using it. I imagine 2gb ddr will be enough, is it true that having on overly obscene amount of ram can actually slow your system?
    i recall getting help from chem on how to overclock my processor, does anyone have advice for the ram or the gpu??

  13. #13
    Moderator chuckskull's Avatar
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    • chuckskull's system
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    RAM goes up with your FSB, for you GPU, google coolbits or rivatuner.

    Definetly dump the 1gig generic though, as RAM will only run as fast as the slowest stick and yeah 2GB is plenty.

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    well first step is to max out the chip

    with a 170 you usually have a choice of the x9 or x10 multi which means the htt will be around 300 or around 270

    then on that asus board i think you are limited to 133 (2/3) 166 (5/6) or 200 (1/1) dividers to give roughly 180/200/225/250/270/300 mhz RAM speed

    thats all nice and simple but you have to factor in 2 other things, timings and dimm voltage

    voltage is just like any other voltage, too little means youre limiting yourself, too much is dodgy, 2.8v is guaranteed by corsair

    timings get looser as frequency increases and its likely that youll get better game performance just leaving the frequency at DDR400 and tightening the timings (that loses performance on memory-intensive apps though)

    but as you have UTT ram chips you can probably knock it up to at least DDR500 and keep the timings tight maybe even 2-2-2 so give that a go

    for voltage, those chips need lots of it but corsair only guarantees up to 2.8v, so id start there and see what it can do

    imo its all a pain in the arse for not much more performance, and as you increase frequency you lose timings and vice versa so youre usually just offsetting performance for performance in another area

    but that ram can keep tight timings and decent speeds so it might be worth it

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