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garus
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Posts: 34200
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 Posted: Sun, 2nd Oct 2011 12:19 Post subject: Overclocking the 2500k |
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Last edited by garus on Tue, 27th Aug 2024 21:44; edited 1 time in total
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Sun, 2nd Oct 2011 12:43 Post subject: |
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Erm yeah, exactly what Sabin says really. It's stupid easy on things like my Lynnfield or your Sandy Bridges.
Have you got a custom cooler yet? If not: Antec Kuhler 620, H80, Thermaltake Frio, Noctua DH14 - in no particular order. These all perform very similarly to each other. The Noctua fans are quieter at high speeds, but I've got my TT's running at 1300-ish RPM (which is barely audible) and have 0 heat issues; peaks at 70 with Linpack.
As far as the actual overclocking goes, yours is easy, because all you have to (and can) do is up the multiplier. Start with locking RAM speeds, forcing the RAM voltage (1.5v and 1333 or 1600 for XMP). Disable spread spectrum, not sure if you need to up the PLL voltage because you can't fuck with the FSB anyhow.
From there, there's 2 approaches: up the speed until it gets unstable, then up the voltage until it's stable again, and so on.
The other is the one I used: core voltage straight to 1.35, VTT to about 1.3 or so and just crank it up to a specific speed (4.5 should be doable). Check if it's stable, then start lowering core voltage until it's no longer stable. From that point, take that back up 2 steps (as 1 will be borderline stable) and write the value down; do the same for VTT and voila, you found your tresholds for that specific speed 
VTT = QPI = IMC = memory controller voltage - has different names in different BIOS's.
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garus
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Posts: 34200
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| Posted: Sun, 2nd Oct 2011 12:50 Post subject: |
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snip
Last edited by garus on Tue, 27th Aug 2024 21:44; edited 1 time in total
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| Posted: Sun, 2nd Oct 2011 13:21 Post subject: |
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I've got the Asus P8Z68-V Pro, but as far as I understand it; it's the same on pretty much all P67+ boards... whack the multiplier up and either let the mainboard deal with auto voltages or set core voltage to 1.2ish, then follow Wereld's advice if you want more than 4.2/4.3.
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| Posted: Sun, 2nd Oct 2011 13:24 Post subject: |
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Have you done any stability tests?
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| Posted: Sun, 2nd Oct 2011 13:29 Post subject: |
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You don't need countless of hours on these tests. 2 hours, for instance, is more than enough. You'll also see the max temperature the CPU reaches on full max load and if it's not, by any chance, throttling.
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Sun, 2nd Oct 2011 13:34 Post subject: |
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Oh I only Linpack for about 30-45 minutes, if it can handle that it'll handle any real-world load. I'm not obsessed with doing these crazy runs and you all know my opinion on stupid bullshit like RAM benchmarking, 3DMark and other useless synthetic bullshit.
I've been overclocking ever since I found the DIP switches for bus speed on my 486-DX4's motherboard (<3) so I'm pretty confident when it comes to overclocking. That was also the only CPU I ever fried; nowadays you can't even fry them unless you really intentionally fuck up 
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| Posted: Sun, 2nd Oct 2011 13:39 Post subject: |
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Well, I'm only suggesting that because gaming isn't the best metewand when it comes down to testing CPU overclock. I have a friend with that same processor and overclock (only the multiplier was upped), and it kept BSODing him in Starcraft 2 after only 2-3 minutes of gameplay as well as on some 3-4-year-old games that utilized only a single core.
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garus
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Posts: 34200
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| Posted: Sun, 2nd Oct 2011 13:48 Post subject: |
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snip
Last edited by garus on Tue, 27th Aug 2024 21:44; edited 1 time in total
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| Posted: Sun, 2nd Oct 2011 14:00 Post subject: |
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LinX AVX is best stability test for Sandy Bridge. Maximum stress with 20 runs is enough to see if its stable. Service Pack 1 needs to be installed on Windows 7 to get AVX instructions working in linx.
@ garus
The watercooling units has preapplied paste on em. Tho i used my noctua paste.
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garus
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Posts: 34200
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| Posted: Sun, 2nd Oct 2011 14:03 Post subject: |
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snip
Last edited by garus on Tue, 27th Aug 2024 21:44; edited 1 time in total
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Sun, 2nd Oct 2011 14:25 Post subject: |
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Check your motherboard layout as well, the Frio is pretty fucking big, it blocks the fourth DIMM slot on mine so make sure you don't need that
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sausje
Banned
Posts: 17716
Location: Limboland, Netherlands
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| Posted: Sun, 2nd Oct 2011 14:35 Post subject: |
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Talking about coolers, didnt see you mention the Mugen 2.
Is that one actually still good, or did i waste my money?
Proud member of Frustrated Association of International Losers Failing Against the Gifted and Superior (F.A.I.L.F.A.G.S)
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| Posted: Sun, 2nd Oct 2011 16:52 Post subject: |
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Fuck my multi doesnt go higher then 33... 
| Quote: | | PC awesome button = Uninstall! |
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garus
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Posts: 34200
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| Posted: Sun, 2nd Oct 2011 16:56 Post subject: |
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snip
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garus
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Posts: 34200
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| Posted: Sun, 2nd Oct 2011 16:59 Post subject: |
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snip
Last edited by garus on Tue, 27th Aug 2024 21:44; edited 1 time in total
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| Posted: Sun, 2nd Oct 2011 18:06 Post subject: |
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| garus wrote: | Generic or not, it has everything I need:
 Spoiler: | |
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Asrock board, fuck yes. That's all I wanted to say.
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garus
VIP Member
Posts: 34200
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| Posted: Sun, 2nd Oct 2011 19:27 Post subject: |
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snip
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Przepraszam
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Posts: 14498
Location: Poland. New York.
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| Posted: Sun, 2nd Oct 2011 19:39 Post subject: |
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Awww, Internet buddies!
How cute!
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sausje
Banned
Posts: 17716
Location: Limboland, Netherlands
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| Posted: Sun, 2nd Oct 2011 19:41 Post subject: |
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| sausje wrote: | Talking about coolers, didnt see you mention the Mugen 2.
Is that one actually still good, or did i waste my money? |
? 
i feel neglected
Proud member of Frustrated Association of International Losers Failing Against the Gifted and Superior (F.A.I.L.F.A.G.S)
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garus
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Posts: 34200
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| Posted: Sun, 2nd Oct 2011 19:45 Post subject: |
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snip
Last edited by garus on Tue, 27th Aug 2024 21:44; edited 1 time in total
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sausje
Banned
Posts: 17716
Location: Limboland, Netherlands
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| Posted: Sun, 2nd Oct 2011 19:46 Post subject: |
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Yea but what i did want to know is, if it still is a good cooler compared to those mentioned above.
Proud member of Frustrated Association of International Losers Failing Against the Gifted and Superior (F.A.I.L.F.A.G.S)
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sausje
Banned
Posts: 17716
Location: Limboland, Netherlands
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| Posted: Sun, 2nd Oct 2011 19:52 Post subject: |
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| sabin1981 wrote: | | garus wrote: |
You are perceiving it wrong. No one bashed you for buying it, therefore good purchase. |
Hahahaha! Epic way to look at things  |
Its the Polish way, thats how they can justify all things 
Cuz no-one moans about Poland, so they must be doing everything good
Proud member of Frustrated Association of International Losers Failing Against the Gifted and Superior (F.A.I.L.F.A.G.S)
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All times are GMT + 1 Hour |
Sounds to me like a generic tool offering generic options that cover a variety of processors... something like the older Intel P4s which had ludicrous multiplier options.
