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 Posted: Wed, 16th Nov 2011 18:36 Post subject: Overclocking? |
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So some time ago I followed some very long and specific overclocking guide and only managed to received a couple BSODS. Now with me wanting to raise my peformance in Skyrim I decided to try again but this time followed the advice of a dude on some forum who has the same CPU and a mobo which as far as I can tell is essentially the same. I set the CPU and NB voltage, changed the FSB, and set the RAM to lowest speed possible. And everything appears to work with a solid 6-8 FPS raise in Skyrim. Decent enough temps and I have my fan at the lowest speed so I can always raise it in case of trouble. Now I didn't change many of the settings that the other guide suggested and am a bit afraid to damage something. So anyone have any good advice for overclocking or/and some good guides that actually work. Oh and is Prime95 the best solution for stability testing? My mobo is Asus P5B Plus Vista Edition (should be essentially the same as a regular P5B I think) and CPU is Q6600.
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TSR69
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| Posted: Wed, 16th Nov 2011 23:59 Post subject: |
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Prime95 is only good for testing temps. It may give your cores full load but it's not optimized to stress your CPU. You can do 1+1 infinity times and send it to your CPU and it'll be under full load but the code itself isn't going to tax your system. For example, run prime 95 and you'll still be able to browse the net and do whatever you want with what seems like no slow down. Use something like intel burn test, your cpu is bogged down because the code is meant to stress your CPU how it should be.
I've never used StressCPU but our most recommended over on overclock.net is 20 passes on high using intel burn test.
As for overclockling Intel I can't comment on that, it's a different world on AMD systems. Sabin however could totally get you in teh right direction.
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TSR69
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| Posted: Thu, 17th Nov 2011 00:09 Post subject: |
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Prime95 tasks get started with a low priority. Anyway Prime95 does a lot of floating point operations. Those are the most stressful to a CPU. Some other programs can intensify that like the one I posted above.
Edit: Tested it, Prime95 uses SSE2 FFT instructions and gets priority normal when started.
Last edited by TSR69 on Thu, 17th Nov 2011 14:43; edited 1 time in total
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| Posted: Thu, 17th Nov 2011 13:39 Post subject: |
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^ what SpykeZ said.
use something like cpu-z to measure voltage. To get more out of your q6600 (I still use the same) raise the voltage. You can easily go up to 1.5 Volt VCore - Problem is, CPU gets very hot. You most likely need to raise northbridge voltage as well.
Just experiment and try different settings.
I`m currently running 333 MHz FSB @ 1,15 V - I don`t need more speed.
Most Q6600 hit a wall around 3400-3600 MHz (G0) - sometimes a bit more.
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| Posted: Thu, 17th Nov 2011 15:09 Post subject: |
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I'm having trouble getting it stable at 3,0 GHz. I get a rounding errors in 1-2 minutes in Prime95. I set the vCore to 1.4 and NB to 1.4. Also tried upping Memory voltage to 1.9 (from 1.8 ) and FSB to 1.3 with no avail. I thought that maybe I should up vCore but I see people getting to 3.4 with less. Also I have the B3 version.
EDIT: vCore 1.45 doesn't help either...
EDIT 2: Allright I think that the problem is the RAM or more precisely my mobos shitty handling of RAM. I messed around with RAM frequency and evntually got a BSOD. The trouble is that my MOBO gives errors and resets itself when I try to manually change RAM timings. With SPD enabled my MOBO sets them to 4-4-4-12 with a 333 FSB freq and 1:1 ratio, which I guess is a bit too tight for sticks rated at DDR2-800 Mhz 6-6-6-18. I reckon I should raise memory voltage but these are not exactly top of the line sticks and I'm worrying about overheating.
EDIT 3: Asuuming it's the RAM and that my mobo isn't a total dick what would be the correct timings for my RAM? I have these settings in my BIOS. The oviovious ones are set to 6-6-6-18 but I got no clue about the others and with these settings I get an overclocking failed message. The memory is Kingston KVR800D2N6 CL6 btw.
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| Posted: Thu, 17th Nov 2011 17:25 Post subject: |
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That should work. Just keep auto timings and raise Ram Voltage.
You should not need such high voltage for your cpu for just 3000 MHz.
Try lowering to ~1.3 (or less).
You can up Ram voltage to 2.1-2.2 without fear. I never saw DDR2 Memory that couldn`t handle at least 2.2 V.
If you have all 4 slots in use, this could be the problem. In this case try to remove 2 modules and see if it works then.
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