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i5 2500k: How are my settings/temperature for 4.5 GHz?

post #1 of 24
Thread Starter 
The past few days I spent overclocking my Core i5 2500k CPU to 4.5 GHz.

The only settings I changed were:

Turbo Ratio: 45x
CPU Voltage: 1.275v
Load-line Calibration: Extreme

Max Temps: 63, 68, 70, and 65. (four cores)
CPU Cooler: TRUE Black 120mm

When I was testing with Prime95 (blend) I used LLC at Ultra High (instead of Extreme) but I kept getting BSODs so I eventually found 1.275v to be the most stable voltage but I also enabled LLC at Extreme and I'm not sure if that's a good thing or not.

I've tested the system with Prime95 for about 16 hours (two different sessions).

How are my settings? Should I mess with anything else? I'm happy at 4.5 GHz but just want to be as stable as possible, etc.
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post #2 of 24
Let prime95 run for 24 hours. If there are no errors or crashes you are pretty stable wink.gif
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post #3 of 24
They look good to me. I always fine 12 hours of P95 blend is enough to declare stability. My rig won't survive more than 5 or so hours but that's because I'm trying to get the lowest voltage possible.

I don't like using LLC mostly because I've heard somewhere that disabled it prolongs CPU life, and if turned off, the CPU no longer has that protection. With that being said, it should only be used on clock speeds higher than 4.5 and voltages higher than the Intel max recommendation of 1.38v. Any higher and LLC should be enabled since the chip is already at "dangerous" levels.
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post #4 of 24
Thread Starter 
Do you think it's better for me to switch LLC back to [Auto] (since that's the default setting)?
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post #5 of 24
I disagree with 12 hours. I have seen them crash after.
post #6 of 24
LLC high, then up the voltage a bit to compensate, 1.275 is no where near dangerous, yet extreme LLC is thought to be.

check your actual voltage through cpu-z, im sure it will be a lot more than 1.275 like you said in bios, probably closer to 1.3, which still isnt dangerous.

you're good until at least 1.35volts, AT LEAST....

run intelburntest for 50 runs, ive never crashes after something has passed that, do 100 if u want to be sure...

temps look fine
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post #7 of 24
There is no need to let prime95 so much hours. That program stresses your cpu at 100% all the time, in games, every games your cpu don't stress at 100% second by second.
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post #8 of 24
I'd ignore Rokson...
1.275V is great voltage for 4.5ghz. I'd push your chip farther!
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post #9 of 24
Quote:
Originally Posted by csm725;14337836 
I'd ignore Rokson...
1.275V is great voltage for 4.5ghz. I'd push your chip farther!

But aren't his temps close to the upper edge? Isn't 72 as high as you want to go?
post #10 of 24
On AMD 60C is max. On intel Tj Max is 98C, 24/7 recommended is 80-85C smile.gif
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