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  1. #1
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    Nov 2010

    Air-cooling my OC'd i7-950

    Hello,
    This post is in regards to my most recent build project. I am running an i7-950 on a GA-X58A-UD3R with 6gb of RAM rated at 1600mhz, but built to OC. I plan on modest overclocking, and I am running with a coolermaster haf build. My HSF is the V8. So far I have heard the V8 was overkill for my overclocking ambitions, but a) it looks pretty and b) better too much cooling than too little. Basically I wanted confirmation from some experienced Overclockers at what the i7-950's potential is on a high-end air cooling build, aka what clock speed would I be likely to achieve. The exact build specifics are below.

    BUILD
    Cpu: Intel Core i7-950
    Mobo: GIGABYTE GA-X58A-UD3R LGA 1366 Intel X58 ATX Intel Motherboard
    RAM: OCZ Gold 6GB (3 x 2GB) 240-Pin DDR3 1600 (PC3 12800)
    Gpu: MSI N480GTX-M2D15-B GeForce GTX 480 (Fermi) 1536MB 384-bit GDDR5
    Psu: COOLER MASTER Silent Pro RS850-AMBAJ3-US 850W ATX12V v2.3

    I'm not expecting any overwhelming numbers running on air, but would like a realistic estimate based on my build.

    Thanks

  2. #2
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    MIAHALLEN's Avatar
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    4GHz should be doable on most 950s with a V8
    If you're lucky you'll get to 4.2GHz or more

  3. #3
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    Quote Originally Posted by MIAHALLEN View Post
    4GHz should be doable on most 950s with a V8
    If you're lucky you'll get to 4.2GHz or more
    Thanks, I was expecting to shoot around 4GHz. Quite honestly I believe as far as performance and longevity goes, it's a good place to aim.

  4. #4
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    dejo's Avatar
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    just a thought, but I would say you can never have overkill for air cooling. you little combo should make you happy in the end.
    if it screams, crank it. if it cries, kill it

    Asrock z77 ex6
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  5. #5
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    Nov 2010
    on my 950 im @ 4.02 ghz on air, stable @ 1.25v, temps 55c idle 85c in prime

    my temps could probably be better but this was my first mount ever using a non stock cooler so i think my paste job wasn't the best, ill probably re-seat the cooler sometime in the future in a bid to improve temps

    24/7 PC
    CPU: i7 950 d0 @ 4.022 GHz (1.21v)
    QPI: 6.894 GHz (1.40v)
    RAM: OCZ DDR3 2000 2GB x 6 @ 1914 Mhz, 8-9-8-24-1T (1.66v)
    Cooling: Corsair H50 Under 90C core temps stable in Prime95 Blend.
    Mobo: Asus Rampage III Formula
    GPU: MSI Hawk 460 GTX
    Boot SSD: OCZ Revodrive 120 GB
    Case: Corsair 700D
    PSU: Corsair HX850

  6. #6
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    Nov 2010
    A tip regarding pasting, in case you are still following the thread. Often the cooler will come with a small sheet of wax paper/cardboard that can spread the thermal compound very flat and even without much practice. However, what I find even more useful is glass, while spreading the thermal compound try to apply it even then flatten and spread with a flat piece of glass. Doing this thoroughly almost completely flattens and spreads it which means no annoying processor hot-spots from "bubbles" or "holes" in the application.

  7. #7
    Member dito's Avatar
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    just 4.2ghz? really? i would think higher than that.
    Rig 1 -Q9550 @ 3.8Ghz (448x8.5), Gigabyte EP45-UD3P, (2) 30GB OCZ Vertex in RAID0, TRUE 120 Extreme lapped, 4GB OCZ Blade LV PC2-8500, XFX HD4890 1gb(@980/1105Mhz), Corsair TX750W PSU, Windows 7 Pro 64, Ultra eXo ATX Clear Side Case, Hanssg HG281D
    Rig 2 - Q9550 @ 4.0Ghz (471x8.5), Gigabyte EP45-UD3P, (2) 30GB OCZ Vertex in RAID0, TRUE 120 Extreme lapped, 4GB OCZ Blade LV PC2-8500, EVGA GeForce 9500GT 512mb(@?/?Mhz), Corsair TX450W PSU, Windows 7 Pro 64, Antec Three Hundred case, Viewsonic 22"
    Rig 3 -Q9550 @ 3.4Ghz (400x8.5), Biostar TP43D2-A7, Vendetta 2, 4GB Corsair PC2-8500, Evga 9500GT 512mb (@770/550/1925 Mhz), Corsair VX450W PSU, Windows 7 Pro 64, Cooler Master Elite 330, Acer X241W
    HEAT

  8. #8
    Member fordf250's Avatar
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    I have a 950 running 4.4G at 1.45Vcore cooled by the noctua NH-D14. Full loads is around 89C when ambiant is 21-23C. At 4.5G and 1.525Vcore I need the window open and it runs 96C.

    I dont know how good the v8 is but 4-4.2G should be easy.
    Rampage 3 gene
    NH-D14
    i7 950@4.4G 1.45V
    GTX470
    Antec P180 Mini

  9. #9
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    Nov 2010
    From what I have read and seen, the V8 is one of the better air coolers out there, and I am quite good at mounting cooler master coolers as is, so I may shoot for higher, depending on what 4.2ghz runs as. And yes, the 950 is capable of more than 4.2ghz fairly easy, but I am not on water and don't plan to be. That and I am doing a 24/7 OC, not a bench.

  10. #10
    Noctua is superior
    System:
    i5-750 @ 4.4GHz (and beyond), 1.368v under LinX & 1.225v VTT
    EK supreme cooper, MCP655 with 2x360 swiftech
    EVGA P55 classified 200
    2x2Gb ECO G.skill 1600 7-8-7-24 @ 2000MHz 7-8-7-24 1.61v / 2100MHz 8-9-8-24 1.5v
    XFX 5870 @ 960//1300 stock voltage
    CM690 II
    Samsung F3 spinpoint
    Corsair 750W

  11. #11
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    Quote Originally Posted by Just a nickname View Post
    Noctua is superior
    But do they all have to come in that beige/brown color combo? It's so... packard bell, lol.

  12. #12
    Yes I know. I changed the fans anyway. The stock fan do not provide enough air flow to maximize the effectiveness of the cooler. So I changed them and got rid of these ugly fan
    System:
    i5-750 @ 4.4GHz (and beyond), 1.368v under LinX & 1.225v VTT
    EK supreme cooper, MCP655 with 2x360 swiftech
    EVGA P55 classified 200
    2x2Gb ECO G.skill 1600 7-8-7-24 @ 2000MHz 7-8-7-24 1.61v / 2100MHz 8-9-8-24 1.5v
    XFX 5870 @ 960//1300 stock voltage
    CM690 II
    Samsung F3 spinpoint
    Corsair 750W

  13. #13
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    Nov 2010
    Just thought I'd post now that I've built and OC'd my new system.
    The system is running 100% stable at good temps, build ran perfect on first boot with overclocking.

    i7-950@4.13Ghz (24/7 OC)
    3x 2Gb 1600Mhz RAM @ 1800Mhz

    I haven't OC'd my GTX480 yet, and seeing how it chews through damn near anything I throw at it (aside Crysis 16x quality AA on very high), I might not.

    my cpu runs higher than I want at idle (30-32 degrees) but surprisingly, at full load it never goes past 54 degrees. Which is lower than I expected with such a high idle.

  14. #14
    Retired muddocktor's Avatar
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    I find my 930 idles much higher than my 980x, oddly enough. The 980x will idle in the 20's but the 930 idles like yours, in the 30's. As for your load temps, what are you using to load the processor? Are you just gaming or running a distributed computing project like Folding or BOINC? Or are you using Prime95 or IBT or Linpack?

  15. #15
    Registered toran0x's Avatar
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    Quote Originally Posted by TollerOC View Post
    Just thought I'd post now that I've built and OC'd my new system.
    The system is running 100% stable at good temps, build ran perfect on first boot with overclocking.

    i7-950@4.13Ghz (24/7 OC)
    3x 2Gb 1600Mhz RAM @ 1800Mhz

    I haven't OC'd my GTX480 yet, and seeing how it chews through damn near anything I throw at it (aside Crysis 16x quality AA on very high), I might not.

    my cpu runs higher than I want at idle (30-32 degrees) but surprisingly, at full load it never goes past 54 degrees. Which is lower than I expected with such a high idle.
    Your CPU gets those temps overclocked with the V8? Guess I need to re-seat/re-paste mine - I have the exact same build as you but not overlocking yet. My idle is 36c and load via Prime95 is about 59c. Ugh.

    Any tips on the thermal paste application with the V8 and i7-950? For AS5.

  16. #16
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    Feb 2008
    just took a quick test for my 950 and UD3R
    cooled with megahalems and scythe S-flex F, single fan. still waiting for 120x38mm clips for my San Ace.

    oc to 4.0G, vcore is 1.27, temperature max at 81 under LinX, I am expecting some marginal improvement if I replace the fan with San Ace.
    Q6600 G0 VID 1.3250v (356x9 = 3.2Ghz 1.525v) Thermalright TRUE Push-pull
    Abit IP35 Pro (Bolt Mod) Official Bios ver. 18 zzzz
    G.Skill 2x2GCL4 4-4-4-12 2.0v Asus GTX 460 768MB Intel X25-M G2 80G Lian li PC-G7

  17. #17
    Member Ohioviper's Avatar
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    Anyone have any luck using a thermalright 120 on i7 950 ? I am going to be putting my new GIGABYTE GA-X58A-UD3R and new 950 into my pc tomorrow. I plan to use my true 120 with 1366 brackets.
    GIGABYTE GA-Z68XP-UD3P rev1.3
    2600k @4.7
    Corsair H100
    G SKILL Sniper 16 gb
    2X Toxic 6950 unlocked in Xfire
    2x Crucial M4 SSD 64 GB Raid O
    WD 640GB Black
    Liteon BR DVD
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    SeaSonic X850 Gold
    Gateway FHD2400 lcd

  18. #18
    Retired muddocktor's Avatar
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    Yep, the TRUE does just fine on LGA1366. Set yourself up with a couple of good quality fans such as Panaflo L1BX or Scythe S-Flex SFF21F or 1850 rpm Gentle Typhoons and let her rip.

  19. #19
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    Quote Originally Posted by toran0x View Post
    Your CPU gets those temps overclocked with the V8? Guess I need to re-seat/re-paste mine - I have the exact same build as you but not overlocking yet. My idle is 36c and load via Prime95 is about 59c. Ugh.

    Any tips on the thermal paste application with the V8 and i7-950? For AS5.
    Sorry for the slow response, have been enjoying my computer. If you haven't solved this problem yet, I have a suggestion for mounting your V8.

    Most of the OCers I've come across suggest just putting a small circular dab of thermal compound in the middle and seating the heatsink, the idea being that the preasure from the sink will spread the compound thoroughly. In my opinion, for maximum effectiveness this mounting method is the least likely to evenly cool your cpu.

    The method I prefer is applying the thermal compound in a lawnmower-esque patern (Like how you put the frosting on a toaster strudel). DO NOT mount immediately after applying. Instead, your compound or processor should have come with wax paper. Use the wax paper to smooth it out until there is an even layer across the entire contact plate on the CPU. If there is holes in your application, fill and smooth those (they can bubble later causing large cooling issues). After you have it applied thoroughly and evenly, mount the HSF.

    Also, make sure to tighten your V8 until it won't tighten any further. You may be worried about damaging your CPU, but the V8 - if mounted correctly - will stop tightening once it is fully in position and won't damage your CPU.

    This method is by far more time consuming then the circular dab method. But let's be honest, is the extra 10 minutes worth it to have maximum cooling performance by your CoolerMaster V8? The answer is clear to me, hell yeah.

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