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I have a few overclocking questions. Overclocked my system, comments & suggestions are welcome <[^_^]>

post #1 of 3
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Hey everyone! I have an Asus Crosshair V Formula Z motherboard, an Athlon II x4 600e 2.2GHz processor, and 32GBs of DDR3 G.Skill Ripjaws X 1600.

What I did was I overclocked the CPU first, to 3.0GHz at 1.2121V (which is only +0.0121V above the max rated specifications. Not a bad overclock at all IMO. CoolNQuiet enabled). And I know my processor isn't really a beast, but it does run Crysis2 smoothly with the help of my crappy GT430 (overclocked from 700c/1400s/700m to 800c/1600s/800m). For a 45Watt processor, it's pretty awesome I think. I like power efficiency tongue.gif

Next, I "overclocked" the RAM from 9-9-9 @ 800MHz to 7-7-7 @ 545MHz (JEDEC standards say 533MHz @ 7-7-7-20); my RAM runs stable with the slight overclock, ran Memtest overnight, passed biggrin.gif Since AM3 processors don't like being overclocked above 666MHz (x2), I instead tightened the timings, left the voltage at stock 1.5V.

Next, I overclocked the northbridge to 2448MHz, stable at stock 1.1V. My question is, does overclocking the northbridge, without an increase in voltage, significantly decrease the overall lifespan of the motherboard? If it DOES decrease the lifespan, I could lower it down to ~1900MHz (but that would decrease my RAM performance by a wee bit, doesn't really matter though).

I also decreased the HT speed to 1.1GHz (from stock 2GHz) because I read all over the interwebz that increasing the HT speed doesn't really help at all with performance. If this is not true, please tell me so I can put it back up to ~2GHz.


By increasing the northbridge frequency from ~1900MHz to ~2400MHz, my RAM's read/write performance went up by around 400MB/s (not bad at all).



^^ Finally, here are the validation links and screenshots. Again, feel free to suggest me some overclocking tips and tricks.

My main question, however, is, does overclocking the northbridge frequency without a voltage increase significantly decrease the motherboard's lifespan. Please answer it to the best of your knowledge.
post #2 of 3
No. Only with voltage increase will you put more stress on components.

Also, the northbridge you are talking about is on the cpu so no need to worry smile.gif
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AMD Rig
(11 items)
 
   
CPUMotherboardGraphicsRAM
FX 6300 Asus m5a99x evo MSI GTX 660 8gb corsair vengeance  
Hard DriveOptical DriveCoolingOS
Samsung 840 120gb  Asus Silverstone argon ar 01 Windows 7 64 bit 
PowerCaseAudio
xfx xxx 650 Antec One Asus Xonar DG 
CPUMotherboardGraphicsRAM
AMD FX 8350 Asus crosshair V formula-Z Asus 7970 Corsair vengeance pro 1600mhz (2x4gb) 
Hard DriveCoolingOSPower
Corsair force series GT 120gb + western digital... Corsair H100  Windows 7 home premium 64-bit Corsair AX 750 
CaseAudio
Corsair 650D Asus Xonar DGX 
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post #3 of 3
I can make a few suggestions.

Concerning the board you have, I've found with my CHV-Z it doesn't take much more than 1.2v's on the NB itself (Not the CPU-NB) to get to or above 300MHz. This board is really good at using voltage to get high bus clocks and if you give it too much, you're just heating up the NB chipset. I believe the most I've ever had to use was 1.22v's or so, this being a good voltage to use for getting to or above 300 on the bus itself. I've never known simply OC'ing the NB to reduce it's lifespan, it's more or a stability issue if you don't give it more voltage to use as speeds go up but if you do, monitor temps to be sure it's not getting too hot - Heat itself will reduce the lifespan of any given component.

OK - What you are referring to as the NB in your post is actually the CPU-NB speed, not the NB speed itself. As for the NB, that's on the board as a chip called the chipset (990FX) but the CPU-NB speed ties in with the CPU, RAM and NB themselves. Since you have a C2 stepping chip, you'll probrably top out at or around the 2700 mark, some being able to go higher, the max I've ever seen without extreme cooling being around the 3000 mark. Know that increased CPU-NB speeds will make the CPU itself run hotter since you'll have to increase CPU-NB voltage to go higher there.

As for HT speeds, yes you can go higher but anything over 2400 with your HT speed isn't helpful and will actually cause instability. Keep it at or below 2400 and you'll be OK.

CPU temps with a X4 chip will be warmer than others except for a Thuban, more cores ='s more heat so be careful there. The max I can suggest for CPU voltage on air with a good cooler would be 1.45v's - Note I said with a good cooler, not the stock cooler that came with it. With water/H2O, you can go higher but even then 1.55v's is pushing it. Your chip will not run the same as others like it, some don't need alot of voltage to clock up, others will need it even for a moderate OC and it depends on your particular CPU. Temps if overvolting are what to watch, try to keep those at or below 55c under load, not idle since load temps are what's important. If you can get it running cooler that would be better for it.
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