Asus P5N-E Overclocking confusion

sgtdisturbed47sgtd

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I am thoroughly confused on the overclocking. I perviously owned a DFI Lanpart UT Ultra-D and OCed my AMD X2 3800 to 2.6, and the overclocking options were obvious and clear. But as for this P5N-E and a Core 2 Duo E6300, it's a whole new ball game. the options are to change the FSB (stock is 1066), and there is a linked and unlinked option. Confuses the hell out of me, as I don't see a CPU Frequency option, just the FSB. I'm not sure, but as I remember, you add some numbers involving the RAM speed and the CPU frequency and you get your FSB, but I don't remember how that goes entirely.

I am using a Core 2 Duo E6300, 2 GB GeIL DDR2 800 4-4-4-12 (Micron D9G chips), and the P5N-E SLI motherboard.

So, when I change the FSB (it says "FSB [QDR] MHz: 1066"), I am dividing the number by 4 to get the true FSB number? Could one of you overclocking gurus explain what numbers to change to get to 3 GHz and what math formula needed to figure out my CPU's frequency? Much appreciated :D
 

sgtdisturbed47sgtd

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So if I want to bring my processor's speed up to 3 GHz I'd need to turn the FSB up to 1720 MHz? I suppose I would also need to bring down my RAM speed from 800, but how far down (in most cases) would the RAM need to be lowered with this kind of overclock? Down to 667?
 

inuyashafly

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well if your math is right yes.

you cpu multipler is 6
the fsb multiplier is 4
and you can switch up your ddr multiplier to keep it near 800mhz
 

warezme

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Uh...yea, in case you are not confused already..., here's an easy chart I made up for you:

E6400.jpg


hope this helps,

Good look, I didn't go higher because I think you will see the pattern
 

sgtdisturbed47sgtd

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I had to RMA the motherboard. Wouldn't POST no matter what I did, so I haven't had the chance to use that chart yet. I have heard that there is a FSB "hole" between 400 and 450 MHz. Can the Core 2 Duo E6300 handle more 3.2 GHz? Because it looks like I either have to settle for like 2.6 GHz or 3.2 GHz. I have the RAM to handle it, I'm just not too sure that the E6300 can though.
 

warezme

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Sorry to hear about your RMA, but yes, your Conroe should be able to easily handle 3.2 with good cooling. Any higher and you might need more complex cooling but its up to your chip. You may be able to go up to 3.3 or 3.4

Any higher and I would suggest water cooling. Be mindful of your voltages.
 

inuyashafly

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Is it possible to change your FSB multiplier cuz I would think that 450 in your case1800 fsb would be a problem for your northbridge. I mean that is almost an 80% overclcok.
 

warezme

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In my case or his case?..., either way the answer is no. The E6400 is multiplier 7 or 8 only, the E6300 he is using, I believe is multiplier 6 or 7 only.

Going down would only make the FSB higher. That is why you need a good quality motherboard that can handle high FSB numbers. The Extreme CPU edition has unlocked multipliers but at that price...it should.

I'm waiting for the quad Penryn's to do a swap out in the future an OC'ed Conroe is a great value and a high quality mobo is a must.
 

sgtdisturbed47sgtd

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Apparently people have been able to reach 3.2 GHz with an E6300 on this motherboard, but I'm not sure how they did it. There is a Linked and Unlinked option, I'm assuming this is so you can overclock the FSB and the RAM independently. If I link the 2, is there a way to keep the FSB lower and still reach 3.2 GHz? I am using GeIL DDR2 800 4-4-4-12, which have the Micron D9G chips, which supposedly are great for overclocking. What settings do I use to reach 3.2 GHz if I have it set as linked?
 

warezme

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Apparently people have been able to reach 3.2 GHz with an E6300 on this motherboard, but I'm not sure how they did it. There is a Linked and Unlinked option, I'm assuming this is so you can overclock the FSB and the RAM independently. If I link the 2, is there a way to keep the FSB lower and still reach 3.2 GHz? I am using GeIL DDR2 800 4-4-4-12, which have the Micron D9G chips, which supposedly are great for overclocking. What settings do I use to reach 3.2 GHz if I have it set as linked?
1828FSB will get you 3199Mhz and your mem won't run 1828FSB linked, unlinked 914FSB would be the closest to sync speed
 

lx_flier

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You can hit up to 500mhz easily on this board, just make sure you turn off voltage safety option(or whatever its called) its under hardware inside of your bios, it will cause shutdowns because it thinks that you are overvolting when vcore is set above 1.36.
 

sgtdisturbed47sgtd

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Ok so I just leave it unlinked, pump the FSB to 1800 or a tad lower, and leave the RAM alone? This RAM can hit 1000 @ 5-5-5-15, but I would think that having better latency would be more important than higher RAM speed.
 

inuyashafly

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Well I am a little bumbed right now. If only conroe didn't wipe the floor with amd's cpus. I like HTT WAY better than FSB. It almost makes no sense to me to not allow you to change the fsb multiplier, like you can change a HTT multiplier. like I have a amd 64 4000+ plus running at like 2.7 wich isnt extrme or anything but my hyper transport is like 1150(2300)

edit

when i got that system I was against overclocking. but my computer overheated anyway(my house temp is hot). So I got water cooling and decided to overclock. to breath new life into it, so it will at least be comparable to my new system.... sorta.

amd 4000+ @2712
asus a8r-mvp HTT @ 4x226
4x512 kingston value(this stuff sucks for OC) @207 2.5-3-3-7(shitty timgings dammit
x1800xt 512 <--HEAT MONGER ATI AI Overclocked at max

e6600 9x333
EVGA 8800 gts 320 not OC'ed yet
DDR2 4x1gb patriot donno speeds right now
GA-965P-S3 (do you guys like this for OC?)
 

Toltec

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I'm in the same situation. I have an E4300 Allendale with this board,this is my first time overclocking and i was trying earlier today to get to 3.0ghz. I was confused on the Link/Unlink situation. Do i go with Unlink? I am looking to achieve at least a 3.0ghz. CPU-Z and my bios are different with the CPU FSB, Bios 800/CPUZ 200. If i was to go with Unlink option, would i need to adjust my FSB (QDR) to 1133? and if so what do i need to adjust my MEM (DDR) to? I would keep the same multiplier x9. If there is something i am missing or if anyone knows a better way i would greatly appreciate it. I am new to OC so a few more instructions would be nice. Here are the rest of my specs.

PSU ANTEC|TP3-650 RT
CASE LIANLI|PC-7B PLUS II BLK RT
MB ASUS P5N-E SLI NF650I SLI 775 VGA
EVGA 320-P2-N811-AR 8800GTS
CPU INTEL|C2D E4300 1.8G Allendale 775 2M R
Cooler Master Hyper 6+
DVD_BURN SAMSUNG|SH-S183L LS SATA
DDR2 2GB PC6400 DUAL OCZ 2X1GB SPEED 800MHz timings CL 4-5-4-15
400gb Western Digital HD 7200rpm
 

warezme

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to get the highest CPu OC, you have to unlink the mem FSB from the CPU. Then you can leave the memory alone if you want and just start bumping up your FSB as I noted in prior posts.

Divide your QDR by 4 that is your base FSB. Multiply your base FSB by your CPU multiplier and thats your CPU in Mhz.
 

inuyashafly

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Not that this has much to do with the topic. I would think it would be cheaper to ger 2 200gb or maybe 250gb drives and put them in raid and you would get much beater performance.
 

Toltec

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to get the highest CPu OC, you have to unlink the mem FSB from the CPU. Then you can leave the memory alone if you want and just start bumping up your FSB as I noted in prior posts.

Divide your QDR by 4 that is your base FSB. Multiply your base FSB by your CPU multiplier and thats your CPU in Mhz.

One more question about OC before i start to proceed. Do i need to increase my ram speed as i increase my CPU? As of right now I have 800 CPU (QDR) MHZ and 800 (DDR) MHz reading in my bios; also I was wondering if someone can check my steps.

-open my bios;go to Advanced Jumper Config. FSB& Mem Freq. section
-Select Unlink
-Select (QDR) and Increase to 1333Mhz (looking for a 3.0ghz OC)
-Leave my ram (DDR) set to 800mhz
-F10 Save and Exit

Do i need to increas my voltage? and if so, will it be just on the CPU or on Ram also, i think my voltage is reading on 1.325 on CPU- I will need to just verify that number.
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Thanks for your Help!