Bro, now that you are settled with CPU OC'ing, now you should move onto tightening the trd timing, oc the Ram a bit (as HyperX can do moderate OC'ig, but for hardcore Ram oc'ing usually are in Corsair, etc. territory)
Tight tRD have direct performance increase on your system (cpu, ram, NB).

Here is some pics of what happens when you tight the timing: (performance increases as going down descending the list below)

Pay attention to the top right corner of memory latency.

With my 800mhz HyperX oc'ed to 961mhz


With my 800mhz HyperX stock clock; but timing change from 5-5-5-18 to 5-5-5-15


With my 800mhz HyperX oc'ed to 1000mhz; tighten the PL level


With my 800mhz HyperX oc'ed to 1000mhz; but timing change from 5-5-5-18 to 5-5-5-15

I used to try 4-4-4-12, but it's tricky to get stable on this CL5 HyperX especially with P43 Giga mobo...in Asus mobo, they got this PL thingy that you can adjust the overall performance level... you're better of with a HyperX 800mhz CL4 (4-4-4-12).
I think you should increase the clock speed of the RAM, as you can see, it does wonders with the result I've attached above.
And the HyperX is meant for moderate OC'ing bro.
If you select 333 for the latch, you can increase the clocks from 801mhz to 961mhz, and if you select the latch @ 400, you can increase the clocks from 800mhz to 1000mhz/10066mhz (I forgot which one, but you get my point, right?)
And do increase just a bit of vdimm, not too much, you can do 'memtest' to see if the RAM is stable @ that designated OC'ed value, you can use Memtest86, its' some sorta advance diagnostics for ram...

Yeah, prime95 does test if your RAM's stability, but not as on an advance level as memtest86. But should do for now.
Other errors you might encounter if the rami s unstable is while gaming..your pc with freeze, or bsod
My point is that, the ram stability can be known when the system properly runs on load on real life applications such as gaming, esp those intense graphic demanding games...
Prime95 can't really test how stable a ram is accordingly to each person's rig because every rig's system are unique to each other, prime only test the ram's stability on a moderate level.

Anyways, I think you should download Everest Free Edition ( http://majorgeeks.com/download4181.html ) and run that memory benchmark test on both with stock ram and OC'ed ram in order to have some sort of sense how much of an improvement there is to your system performance.

One thing I learn that, it's hard to get tight timing and high clocks at the same time on the ram, but this is only if you have high PL Level,
but I think you can OC'ed the ram with both high clocks and tight timing if you oc'ed the ram 'stand alone'.....meaning leave the the PL level on stock and just OC the ram..

btw intel recommended 1.36V the max rite?do anyone use higher Vcore like 1.5V for 24/7?

I literally read that some guy's (on other forum) OC'ed proc up to 1.5v,(even with full custom WC) got his proc to live only months.
Before I read about that, I thought it's the temps that kills a chip, not voltage, but I was wrong..and even more wrong when I google around about it...

If you think of OC'ing that high it's unrecommended, even 1.41v+ you'll get people telling you it's unrecommended..
And what's more, your proc is a 45nm chip, can't take that much abuse bro..



This post has been edited by JoBigShow: Apr 8 2010, 01:29 PM

In bios, I set the Vcore at 1.32v.



These days with the climate is freakin' hot, I can't get idle below 35c, load around 65c.
Plus my thermal paste wasn't properly applied last time I took out my cpu hsf. Using Artic Cooling Freezer Xtreme btw.
Planning to get Tuniq TX3 thermal paste this weekend, with that I'll probably be looking to idle around 30-34c and load below 60c.

Actually, in real world application the PDC E6300 is almost the same as the C2D E7300...but you could have bought E6500 which as good as a C2D E7400 and a bit better than your E6300...
My bro bought the E6500 which priced at around RM238 (@Lowyat Plaza) and OC'ed to 4.0ghz easily, and kinda beats my RM370 OC'ed E7400 (@3.8ghz) in synthetic benchmarks...

C2D is more expensive because of the marketing; with PDCs, consumers still thinks that PDCs are likes of those E5300/E5200 procs and didn't take much notice that Intel already manufactured a more powerful PDC line of procs, like E6300/E6500...

In another words, you got two procs with almost the same power but one is more expensive because it's a 'Core 2 Duo'...

But in terms of overclockability, I think you should OC both proc and see which one can OC higher...
You got 2 procs to OC now, this should be fun...

I always recommend the PCD E6xxx for people who's looking for an overclockable proc and in the range of the low-mid end Core2Duo (E7xxx) procs because it's cost RM100+ lesser, but performs almost similarly at stock clocks.
Well the Cache.. it could be an advantage, but not a major one that is...

You got aftermarket CPU cooler?
Stock Intel cooler won't do any good...

Be sure to ditch Easy Tune 6 and tweak the overclocking parameters manually in the bios - it's always the best way...

Nice.

Yeah, the idle TEMP with your Vcore should be below 40c. Still using intel stock heatsink?

Have you done stress test like prime95, OCCT, LinX, etc.?
If so, please include screenshots here for academical purposes

Nah really. It's just big words only...

It's just for reference so that other people that look this thread can use the collective information to better understand overclocking the E7xxx.

Before that, why in your sig written that you are using K.V.R. 800mhz, and you stated in your previous post that you are running your ram at 667mhz?
Just wanna know if your RAM is downclocked from 800mhz to 667mhz OR it is really a 667mhz stock ram...

If it's 800mhz stock speed, you better off using that speed, so you can tune your OC to 400fsb X 9 = 3.6ghz...

OK, I've used to OC'ed my E7400 to 3.5mhz because I used to use 667mhz rams, and 10.5 X 333 is the MAX I can get while retaining the 1:1 ratio.
I was using stock cooler at that time, the IDLE temps was okay, but the LOAD temps reached up to 99c when running tests like 3DMark '06.
The stock cooler was horrible when OC'ed, you are better of with the cheapest Cooler Master coolers like the X-dream lines (http://www.coolermaster.com/product.php?product_id=2533 ), only RM60 at Low Yat Plaza..
The C2D stock cooler are not recommended for OC'ing, the Quad's cooler are okay because they more thicker than the C2D's cooler...

---

Added on May 18, 2010, 12:49 amA procs life can last up to 15 years+, but by OC'ing it via high Vcore could reduced it to 5-6 years of lifespan, meaning if you want to OC it up to 1.4v, you will have to plan to upgrade the proc in the next 5+ years... but by that time we have already upgrade the PC.
But I can't garantee it, because each procs are different. 1.4000v is alright, but more that 1.41v is to much for this 45nm Core 2 Duo procs.

Intel's MAX recommendation of highest Vcore is 1.3625v, so try to OC as highest possible with different FSBs and multipliers combination BUT without going over that 'bar' of 1.3625v...
Until you can't OC higher with Vcore below 1.3625v, then you can go above that recommended Vcore. (but of course at your own discretion...)

For example, I can OC my E7400 to 3.8ghz at 1.31v; but to reach 4.0ghz, I need to OC it to 1.41v...so i rather stick to 3.8ghz because it's healthier...

This post has been edited by JoBigShow: May 18 2010, 12:49 AM

E7500 is a very nice proc to OC! It has up to 11 multipliers...
Bro, I think if you read pages back, there are few people OC'ed the E7500 and yield successful results...I don't remember who (it was months ago when this thread was really active), but one thing I remember about the E7500 is:
LOW VCORE, HIGH MHZ..

I think for your situation, the ratio of 4:5 is suitable, meaning keep your RAM at stock speed(or higher) and just fiddle around with the highest FSB you can squeeze out from the proc.

Refer to the bios reading for Vcore; yes the C-puz reading is lower because of VDroop... disable LLC (load -Line Calibration) for overclocking stability and improves the VDroop fluctuations...

I personally enabled LLC for healthiness of the proc, but do that if of OC is more than stable, if not just disable that feature in bios (LLC)


Somehow I have the feeling you have maxed out on OC'ing the proc's FSB and it's up to the Vcore to do some stabling.
But you said that you bump the Vcore up to 1.4v and still unstable...well it's unrecommended to go higher though...

3.75ghz is a good OC'ing result, to get to 4.0gh with extra loads (voltage) on the hardware isn't worth it... because I did a benchmark with my proc on 3.8ghz and 4.0ghz, and there's no difference in performance...

You should be thinking on tightening up the Performance Level and push the RAM's clock's.
This will have major system improvement than to get pass that 3.75ghz plateau...

Clocks are the mhz, 5-5-5-15 is timing.

One of the criteria of a good OC'ing result are those with the lowest stable Vcore possible for 24/7 usage - so to get the Vcore lower than 1.38v is benefiting the longevity of the proc.

Since you have a Giga board, the PL (which usually the term use on Asus boards) are in this case, tRD.

First, find the default value of your board's tRD (meaning change the setting from AUTO to manual) then lower it in increments while testing for stability with prime95 and performance with Everest ->' Cache and Memory Benchmark' (it's a freeware software, just download it)



Since this is no longer a proc OC'ing, you should ask other sifus on other related thread...

Yup, try to find the 'lowest stable Vcore' for your proc.
Anything above Intel's maximum recommendation of 1.3625v is taking it's toll on the 45nm procs..

Btw, your P43 chipset mobo is good for OC'ing, those Asus Maximus Formula's, Rampage, Bigbands, etc. are just rich man's toys, any P45 or at least P43 chipset mobo can OC decently, just that the P45's are known to edge the P43 a bit..
But that's not something to be that concern about, for OC'ing stability, it's the hardware itself, mostly the mobo....for instance the 'power phase design' (those dark box like capacitors that surrounds the 775 socket) are more important for reliability of 24/7 duty and will endure longer OC abuse...

Having said, no need to upgrade to P45 for the sake of this, you better off using your current giga board till it breaks down in years and allocate the budget for the upgrade of socket 1156 (i3, i5, i7 860) in the future...

EDIT:
Just read back the pages and realize you have a 4G HyperX DDR2 1066mhz RAM, right?

Keep the clocks(mhz) stock or OC the clocks over 1066mhz, if you can get your RAM to OC near 1200 (if your mobo supports up to that frequency) your enhance the overall system performance!
That HyperX is meant to be OC

That '1:1 ratio' is just a primary goal for any one who tries to OC their proc, there's a whole new world of OC'ing if you past that '1:1 ratio' point...overall system performance plays a bigger role get your PC at peak performance.
Do download Everest to see the performance increase when tighening up the tRD or OC'ing the RAMs...

This post has been edited by JoBigShow: Jun 28 2010, 02:34 PM