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OC Offset and Mem

post #1 of 3
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I have my 2500k @ 4.5 24/7. I am looking it up it a little bit more as my temps are fairly low and my voltage isn't crazy yet.

I was wondering how necessary having an offset is. Are there any disadvantages to having it ran OC'd 24/7 (aside from power consumption)?

Next is Memory. I think it's about time I look into OC'ing my Memory. I primarily game but do some minor photoshop and premiere work. Should this be something that I try?
post #2 of 3
not sure what you mean by offset.

generally there's two ways your an overclock

1st Way: Fixed Voltage - Great when going for high overclocks or benchmarking, keeps your voltage from throttling down therefore increasing reliability of the overclock, consumes more energy, chip runs hotter

2nd Way: Offset Voltage - Offsets the normal voltage of the CPU, therefore at times when it normally wants to run at a certain voltage, the offset causes it to use that much more voltage.

I prefer the 2nd way, using offset voltages allows your voltages to drop when the chip isn't under load, helping lower temperatures, reduce power consumption and prolong the lift of the chip (if you believe in that)

As far as memory overclocking goes, It's always recommended that you find a nice stable overclock for your CPU FIRST, test it and make sure it's very stable, once you're sure your CPU Overclock is stable, then you can begin overclocking your memory. this is to ensure any crashes and/or BSOD's you may get aren't due to the CPU itself.

From my experience, overclocking memory doesn't improve any types of real world performance, sure it's cool to say you overclock your memory and it's cool if you're benchmarking but it's not necessary.
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NASzi's Stryker
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samsung 850 evo 1 tb Seagate Barracude 1 TB 6 GB/s Blue Ray Player/DVD Burner XS-PC RS 240 Radiator 
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post #3 of 3
That's good advice.

Overclocking with auto voltage can be a viable alternative to offset. My 2600k (on an Asrock z68 extreme4) does 4.5ghz on ~1.32v for both offset and auto voltage. Manual vcore required 1.35v+, as I recall. YMMV, but I'd still recommend trying the different voltage options and see which gives you the highest stable clock and lowest vcore.

Overclocked memory can limit your CPU overclock, and provides little (if any) benefit usually, because increasing the speed usually requires increasing latency.

This is a good read: (http://www.tomshardware.com/answers/id-1795015/system-memory-overclocking-cpus-die-memory-controllers.html) "....higher speed can reduce performance

9-10-9-27........9/1866 x 1000 = 4.82 (1.50)
11-11-11-27.....11/2133 x 1000 = 5.16 (1.50)

The 1866's are "faster" at 4.83 ns versus the 2133's 5.16"

If you decide to try it, I'd definitely suggest backing up your data first, as its easy to corrupt the OS with unstable memory. I'd run at least 3 passes with Memtest86 before ever booting into the OS, and then run P95 custom with 80-90% memory to get a rough idea of stability.
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Nordilith
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