Spec me some new RAM

arfur

arfur

arfur

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Joined
26 Nov 2006
Posts
1,091
having OC issues with my P5N3SLI-e Plus board, cant over clock at all, the CPU and RAM was ok in my DS4 board but I've now got this new ASUS one and the RAM (GEIL 6400 ULL) isnt on the QVL so I dont know if thats what causing the issue (even though I've locked the RAM to 800mhz. Can someone tell me what RAM is ok with this board for OC'ing, I was looking at the Corsair XMS2-6400 http://www.overclockers.co.uk/showproduct.php?prodid=MY-108-CS&groupid=701&catid=8&subcat=813 but the part number isnt available to check the QVL,

thanks
 
increased the volts, set the timings set no good, what I did find out last night is that it looks like its the FSB, If I run it at 375x8 (RAM set to 800) it seems fairly stable (it locked up in 06 but not CSS or aquamark) but if I run it at 400*7 (2.8ghz) it either doesnt post or hangs during boot.

I've given it 1.5v on the vcore and bumped the NB/SB a touch but no luck...
 
Although it's tempting to throw money at the problem, I'd strongly advise against it as it'll likely be an overlooked bios setting.

Is the RAM memtest stable at its stock timings and frequency?
 
trojan698 said:
Although it's tempting to throw money at the problem, I'd strongly advise against it as it'll likely be an overlooked bios setting.

Is the RAM memtest stable at its stock timings and frequency?
Click to expand...

Agreed.

Arfur....what are the exact voltages and timings you've set?

AndyOcUK
OcUK Tech :)
 
Try this:

CPU Voltage @ 1.4
FSB @ 334MHz
Ram Voltage @ 2.1
Ram Speed @ 667Mhz (leave it unlocked and it will pull up to 817MHz)
Ram Timings @ 4, 5, 5, 15
NB/ SB up one notch on voltage
PCI Express @ 101MHz

Turn off stuff like this if you don't need it:

Parallel ports
Serial Ports
Firewire
USB LEGACY

That should give you 3GHz

AndyOcUK
OcUK Tech :cool:
 
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thanks I'll give this a try tonight, I think its either Vcore volts or NB temps, the heatpipes are too hot to touch when its running, might put AS5 under them and strap a bigger fan blowing over them...
 
Leave the heatpipes.... They are all too hot to comfortably touch..... its their job to get hot.

Think about it....the heat is coming from the chips under the heatpipe array so common sense tells us that there is clearly no problem with heat transfer from the chips into the heatpipe.

Trust me... I'm a doctor (lol) and I've been doing the overclocking thing for a long time :D ;)

AndyOcUK
OcUK Tech :cool:
 
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Also, far too many people whack up the voltage far too soon i.e. with the slightest of overclocks.

Seasoned overclockers use this method:

Increase bus speed/ X
THEN, increase voltage slightly ONLY when you reach the point of instability.

I've been able to send you these settings easily because I build around 40 systems a week which we ship at the overclock I detailed.

In reality, it took me a few hours to find the sweet spot of performance/ stability (and i've been overclocking stuff for 10+ years).

Its not an exact science and involves hours, sometimes days, of jiggering about with all sorts of settings and (infuriatingly :mad: ) you sometimes realise that the 1st setting you tried was the best (LMAO :D )

Regards

AndyOcUK
OcUK Tech :cool:
 
yep I've been overclocking since I realised my 486dx 2x66 could run as a 4x100 (ah the days of no heatsinks :) )

The reason why I mentioned the north bridge was because it was too hot to touch, this maybe because its getting rid of the heat from the chips but it can only dispose of a percentage of the heat into the air, therefore if I added a bigger NB cooler (like the one you specc'd in one of your other thread posts) it would allow the NB to run cooler and hopefully increase OC'ing, if the chip is too hot its going to restrict it.

On the DS4 board I never raised the volts above default
 
Cool.

In my experience, these heatpipes on new boards get stupidly hot and still run stable.

Let me know how you get on with my settings. I'll do my best to help :)

AndyOcUK
OcUK Tech
 
AndyOcUK said:
Cool.

In my experience, these heatpipes on new boards get stupidly hot and still run stable.

Let me know how you get on with my settings. I'll do my best to help :)

AndyOcUK
OcUK Tech
Click to expand...

Andy, is it you who serves behind the shop counter?

If it is you give some excellent advice :D
 
managed to get it 3.2 last night on 1.4v and NB on 1.5v but I had to position a 120mm fan blowing across the NB its now only warm to touch. Tried beyoind 3.2 but it wouldnt have it with more VCORE volts so got bored, will try again tonight.
 
its on water, but with my arctic cooler I was running stable at 3.6ghz on my DS4.... :) thats what I'm aiming for...
 
Right.

I've had 4GHz out of that chip on a Swiftech Apex 220. Bit flaky but got it prime stable at 3.8GHz.

Let me know how u get on.

AndyOcUK
OcUK Tech :cool:
 
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